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The Fading's Secret in Van Gogh Painting: Chemistry in Pigment
Xinyue Lu, Lu He, Junlong Zhao
University Chemistry    2021, 36 (10): 2011018 . DOI: 10.3866/PKU.DXHX202011018
Abstract (1937)   HTML (49)    PDF (2691KB)(812)       Knowledge map    Save

Vincent Van Gogh is considered today as the greatest Dutch painter and loved by many people. Unfortunately, his paintings suffered degradation problems. This paper introduces the pigments used in Van Gogh's paintings and reveals the fading's secret based on chemical principles, the research of pigment chemistry also can help to choose the best strategy for the proper conservation of art masterpieces.

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A Tour of the Radioactive Magic School
Yanru Lin, Laiying Zhang, Yaxian Zhu
University Chemistry    2021, 36 (10): 2107036 . DOI: 10.3866/PKU.DXHX202107036
Abstract (660)   HTML (19)    PDF (640KB)(399)       Knowledge map    Save

Radioactive elements have played an essential role in human life and production. Herein, this paper introduces the properties of several representative radioactive elements, and the applications of radioactive elements in life and production. Our aim is to make it easier for readers to understand in a more lively way.

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Suspect of Liver Cancer Is Tracked Down
Yi Wu, Yi Lü, Rui Liu
University Chemistry    2021, 36 (10): 2106016 . DOI: 10.3866/PKU.DXHX202106016
Abstract (441)   HTML (16)    PDF (1490KB)(364)       Knowledge map    Save

This paper introduces four common methods (ultrasonography, blood biochemical examination, computed tomography and magnetic resonance imaging) for early screening of liver cancer and the core principles of detection with the story of detectives tracking suspects. This paper takes the high-risk population of primary liver cancer as the main subject, combines the knowledge of medicine and analytical chemistry, popularizes the early detection process of liver cancer, encourages the population with high risk of liver cancer to have regular physical examination, and enables people to have a more comprehensive understanding of cancer detection.

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Exploring the Three Gorges Hanging Coffin Site: 14C Dating Manual
Yi Wu, Rui Liu, Yi Lü
University Chemistry    2021, 36 (10): 2107092 . DOI: 10.3866/PKU.DXHX202107092
Abstract (494)   HTML (18)    PDF (798KB)(293)       Knowledge map    Save

Based on the story of an archaeologist who investigated the hanging coffin in the Three Gorges, this paper introduces the basic principles, common detection methods and applications of radiocarbon dating, and systematically popularizing the relevant knowledge of 14C dating. The methods of classification, sampling and analysis of radiocarbon samples are introduced. At the same time, this paper introduces the cliff tomb in Sichuan-Chongqing area, showing readers the unique charm of ancient Bashu culture.

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Deciphering the Perfume Family
Chenchen Huang, Shouchun Yin
University Chemistry    2021, 36 (10): 2107014 . DOI: 10.3866/PKU.DXHX202107014
Abstract (499)   HTML (27)    PDF (989KB)(346)       Knowledge map    Save

Perfume, a pleasant smell, enriches people's material life and spiritual and cultural life. Through the perfume design competition and chemical knowledge, the development history, chemical composition and individual differences of perfume were introduced in the way of personification.

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Dialogue with Mr. Boron
Laiying Zhang, Yaxian Zhu
University Chemistry    2021, 36 (10): 2108042 . DOI: 10.3866/PKU.DXHX202108042
Abstract (839)   HTML (56)    PDF (981KB)(874)       Knowledge map    Save

Boron has played an essential role in human life and production. Herein, this paper personifies Boron to describe its properties and applications in life and production. Our aim is to make it easier for readers to understand in a more lively way.

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Alum's Time-Travel Journey
Yuhan Jin, Jinxin Guo
University Chemistry    2021, 36 (10): 2107095 . DOI: 10.3866/PKU.DXHX202107095
Abstract (608)   HTML (15)    PDF (920KB)(291)       Knowledge map    Save

As a chemical widely used in human life, alum plays an important role in painting and calligraphy, water purification, dyeing, architecture, medicine, etc. However, it does harm to our health when used as a food additive. This article tells the story of alum's journey through time and space in the first person and lets readers explore the properties and applications of alum with their interest sparked.

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Detailed Analysis of Ginkgo
Minling Jiang, Shouchun Yin
University Chemistry    2021, 36 (10): 2107035 . DOI: 10.3866/PKU.DXHX202107035
Abstract (434)   HTML (10)    PDF (847KB)(269)       Knowledge map    Save

In the form of debate contest and with the combination of real life, this article introduces the physiological activities and structural functions of ginkgolides and flavonoid from the aspects beneficial to human beings, while introduces structural functions and pathogenic mechanism of glycosides, ginkgolides and cyanosides.

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Interviews with Elements: "Femme Fatale" Mercury
Jingyi Zhao, Rui Liu, Yi Lü
University Chemistry    2021, 36 (10): 2107090 . DOI: 10.3866/PKU.DXHX202107090
Abstract (715)   HTML (30)    PDF (792KB)(444)       Knowledge map    Save

The article personifies the heavy metal element mercury, which describes its physical and chemical properties through the dialogue between human and mercury. Then it introduces alchemy and some uses of mercury in modern times. In addition, the toxicity of mercury vapor and organic mercury is also discussed.

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Nobel Prize in Our Life
Hongchun Li, Hong Wu, Yuxi Wang, Hongyan Feng, Yuan Zheng, Quan Lan, Guoshun Jiang, Qianghua Wu, Pingping Zhu
University Chemistry    2021, 36 (10): 2107064 . DOI: 10.3866/PKU.DXHX202107064
Abstract (636)   HTML (18)    PDF (1735KB)(445)       Knowledge map    Save

The Nobel Prize has become the highest honor of science nowadays, and the awarded achievements represent the most influential achievements in the process of human exploration of natural science. Although these achievements sound "high and cold", they are actually not far from our lives. This paper selects some Nobel Prize achievements which are closely related to our life and shows how these achievements affect our life through the life and dialogue of Dahua and Xiaoxue. This can further realize the importance of science and technology, and make people pay more attention to the development of science and technology, and stimulate teenager's enthusiasm for science and technology.

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"Modern" Antiques: On the Chemical Principle of Antiques Finish
Mengchen Wang, Qingqing Lin, Meng Wang, Wei Zhang, Junlong Zhao
University Chemistry    2021, 36 (10): 2107117 . DOI: 10.3866/PKU.DXHX202107117
Abstract (814)   HTML (36)    PDF (2069KB)(403)       Knowledge map    Save

Antique is the valuable cultural heritage material that our ancestors gave us. This paper reveals the chemical principle of antique aging and the "secret" of antique aging from the chemical point of view, as well as analyzes the basic chemical principle of illegal peddlers using the aging technology to intentionally fabricate. More importantly, using these chemical principles to maintain, repair and copy cultural relics is the correct way to use antique aging, which aims to let readers understand the chemical nature of aging and enhance readers' attention and concern to cultural relics.

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Sodium Nitrite: An All-Rounder with Good and Evil
Weiliang Jin, Jing Wang, Lina Zhu, Deming Kong
University Chemistry    2021, 36 (10): 2107108 . DOI: 10.3866/PKU.DXHX202107108
Abstract (713)   HTML (18)    PDF (668KB)(362)       Knowledge map    Save

Sodium nitrite is the most commonly used food additive in the production of meat products. It has moderately strong toxicity. It has important applications in chemical, pharmaceutical, textile, machinery and other industries. This paper introduces the preparation, properties and applications of sodium nitrite in the form of sitcom.

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The Lemon Scent in the Lemon Garden, the Supreme Treasure in the Lemon Fruit
Yidan Luan, Jinzhan Li, Mengyao Yun, Dehong Yang, Kun Wang, Benyong Yang, Liuxue Zhang, Lin Mei
University Chemistry    2021, 36 (10): 2107114 . DOI: 10.3866/PKU.DXHX202107114
Abstract (553)   HTML (18)    PDF (1076KB)(352)       Knowledge map    Save

Lemons are full of treasures, rich in nutrition and versatile. Anyue lemons, due to the excellent appearance and texture, are well-known and the best-selling in the world, thus become a beautiful business card for China. Based on foodie Li Muzi and Lingmeng elves' virtual travelling of the world's five major lemon gardens, the paper taking the Anyue Shining Garden as the scene props, anthropomorphically introduces the origin, varieties, ingredients, functions of lemons, culture, and the characteristics and development of Anyue lemons through the explanation of the robot Dr. Lemon. The source and application of citric acid have also been discussed, aiming to popularize lemon-related knowledge in a lively way to encourage people to know, use, and love lemons. It also describes the characteristics, grand development and strong cultural color of Anyue Lemon, which helps to inherit the national brand culture, perceive the national spirit, enhance national pride and self-confidence, and spread the concept of green development.

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Looking for the Missing Blood: Uncover Hidden Truths
Jiayi Yang, Junfeng Liu
University Chemistry    2021, 36 (10): 2107127 . DOI: 10.3866/PKU.DXHX202107127
Abstract (576)   HTML (23)    PDF (574KB)(441)       Knowledge map    Save

With the great development of modern science and technology, chemistry has gradually penetrated into different disciplines, especially in forensic medicine. In this article, we will follow Professor Fall on a wonderful detective journey to understand how ancient and modern forensic scientists use chemical means to detect the disappeared blood, restore the process of the event, and uncover the truth behind various cases.

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Current Situation Analysis on Popularization of Chemistry in Tiktok Short Video
Xiaoqiao Qin, Junqiao Zhuo, Yunzhi Wang, Xin Yang
University Chemistry    2021, 36 (10): 2108048 . DOI: 10.3866/PKU.DXHX202108048
Abstract (863)   HTML (43)    PDF (348KB)(622)       Knowledge map    Save

The rapid development of short video has changed the way people obtain information. After fully integrating with the characteristics of chemistry, short video on chemistry has become an important way for popularization of chemistry, which has ushered in a new era. This paper analyzes the current situation of popularization of chemistry in short video, including tiktok's content, form and influence, and puts forward some suggestions for the development of popularization of chemistry using short videos, so as to promote the further development of popularization of chemistry in the short video platform.

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Nickel's Birthday Party
Qing Feng, Junfeng Liu
University Chemistry    2021, 36 (10): 2108062 . DOI: 10.3866/PKU.DXHX202108062
Abstract (508)   HTML (31)    PDF (350KB)(376)       Knowledge map    Save

This article uses the first-person perspective, with the birthday party as the storyline, to popularize the properties and functional applications of nickel from the perspectives of alloys, inorganic salts, complexes and organic organisms. By the use of anthropomorphic technique and popular language, it's more suitable for ordinary people to read, which could improve people's cognition of chemistry knowledge, and stimulate students' interest in chemistry.

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The Tear-Gas Weapon of Onion Knight
Xiaoxiao Xing, Lijuan Qiu
University Chemistry    2021, 36 (10): 2107105 . DOI: 10.3866/PKU.DXHX202107105
Abstract (563)   HTML (24)    PDF (411KB)(292)       Knowledge map    Save

This paper anthropomorphizes onions to explain why cutting onion can irritate eyes and introduce the methods to eliminate the irritation in the first person. It helps the audience to get acquaintance with the nutritive composition, the value of dietary therapy and the onion model.

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Trying to Discover Oxygen So Many Times: The Guy Appears in Colorful Places
Yonghong Hu, Chen Zhang, Jingwen Jin, Linchun Zhang, Xi Chen
University Chemistry    2021, 36 (10): 2107115 . DOI: 10.3866/PKU.DXHX202107115
Abstract (457)   HTML (17)    PDF (2219KB)(269)       Knowledge map    Save

A unique magic performance for oxygen was designed, in which the key role of the magic performance, a chemical doctor, Dr. X gave a discovery story for oxygen. The performance reveals the discovery route of oxygen, leading the teenagers to understand the colorimetric technology and sensing materials of oxygen, as well as their applications. The story will let the younger to inspire the truth value of sciences from the discovery process of oxygen.

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The Legendary Swordsman: MOFs
Xiang Yang, Aijuan Han, Junfeng Liu
University Chemistry    2021, 36 (10): 2107086 . DOI: 10.3866/PKU.DXHX202107086
Abstract (854)   HTML (25)    PDF (509KB)(381)       Knowledge map    Save

Metal-organic frameworks (MOFs) are a kind of compounds with a three-dimensional periodic network structure. MOFs exhibit excellent performance in adsorption and separation due to their high porosity, large specific surface area and adjustable pore size. This paper uses the anthropomorphic technique to show the nature, structure regulation as well as adsorption and separation applications of MOFs to the readers.

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Chemical Documentary: A New Form of Science Popularization
Zengdong Zhang, Zunli Mo
University Chemistry    2021, 36 (10): 2101020 . DOI: 10.3866/PKU.DXHX202101020
Abstract (963)   HTML (11)    PDF (320KB)(484)       Knowledge map    Save

This paper takes the science popularization of chemistry as an example to discuss the connotation and development process of documentary, particularly chemistry documentary. From the aspects of content, form and characteristics, this paper analyzes several chemical popular science documentaries with good reputation and high quality. The material and spiritual values of chemical documentaries are summarized, the prospect of science popularization in China is prospected, and some simple suggestions for the development of chemical science documentaries in the future are put forward.

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The Popular Science Experiment of Making Recycled Paper Dyed with Vegetable Pigment
Tongyao Tian, Dongqing He, Gao Pu, Xudong Xie, Xuanjin Li, Yan Li, Huafeng Zhang, Ying Zhang
University Chemistry    2021, 36 (10): 2012034 . DOI: 10.3866/PKU.DXHX202012034
Abstract (1112)   HTML (37)    PDF (2657KB)(621)       Knowledge map    Save

Based upon the method of making recycled paper and the knowledge of natural pigments, this popular science experiment proposed an approach for making recycled paper dyed with vegetable pigment. This popular science experiment exhibited scientific, intriguing, brief and high operability. Moreover, we also creatively designed some interesting handmade works including pulp paintings, coasters, and origami, using dyeing paper and dyeing pulp. This experiment would provide a useful practice of chemical sustainable development, which helps the public better understand the chemical principle of recycled paper making and the extraction method of natural pigments.

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Nitrogen Association
Jialin Wu, Qizhi Yao
University Chemistry    2021, 36 (10): 2104037 . DOI: 10.3866/PKU.DXHX202104037
Abstract (779)   HTML (28)    PDF (383KB)(499)       Knowledge map    Save

Nitrogen is a common and widely distributed element. It plays important roles in the production and life. In this paper, the nitrogen atoms and chemicals known to human beings were integrated into a "Nitrogen Association", and then the story involving nitrogen families was introduced to a young man in dream by Mr. Nitrogen, President of the Nitrogen Association. The purpose is to let readers know more about the history, distribution, elementary substance and compounds of nitrogen.

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Magic Activated Carbon Family
Jijun Sun, Jianjun Li, Lin Han, Naichen Yao, Qiaojian Mei, Xinwen Zhang, Kun Zhang, Yujie Zhou, Quanqin Zhao
University Chemistry    2021, 36 (10): 2103011 . DOI: 10.3866/PKU.DXHX202103011
Abstract (831)   HTML (18)    PDF (972KB)(435)       Knowledge map    Save

Activated carbon is a form of carbon materials with strong adsorption capacity. Both broad-spectrum and specificity can be regulated by preparation and processing methods. It plays an important role in removing impurities during purification processes. In this paper, the anthropomorphic method is used to demonstrate the properties of activated carbon and its classification vividly, so that readers may fully understand the family of activated carbon and its applications in fun.

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Xiaohuamei Travels across Heterocyclic Countries
Dehong Yang, Kun Wang, Wanting Zhou, Bing Li, Xiao Feng, Zhenming Zhang, Guangci Zhang, Fuqi Qiao
University Chemistry    2021, 36 (10): 2102043 . DOI: 10.3866/PKU.DXHX202102043
Abstract (675)   HTML (13)    PDF (444KB)(268)       Knowledge map    Save

Aromaticity is the characteristic of aromatic substances such as aromatic hydrocarbons and aromatic heterocycles, which is both important and difficult in the organic chemistry courses. Based on the structure and properties of benzene and heterocyclic compounds, coupled with wild imagination, this paper wittily tells the story of the college student Xiaohuamei traveling across the heterocyclic country and transforming into princess benzene, forming an eight-member group with the four princes of pyridine, pyrrole, furan and thiophene, the maid cyclopentadiene, the pageboy piperidine and tetrahydrofuran. With the attention of the public, they successfully passed the graduation defense and obtained the qualifications of the aromatic country. The aim is to deepen readers' understanding of the nature, the judgment basis, the structure and properties, as well as application of aromatics and aromatic heterocycles through analogy in a lively way, lead readers to further understand the scientific thought in the development process, and remind people to pay attention to the social impact of aromatic compounds.

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An Introduction to Hydrogels in Delicacy
Zining Dong, Lizheng Yao, Yiran Li, Feifan Zheng, Zixi Cai, Zhaoyang Shi, Ningjing Cai, Jingyuan Wang, Jing Yan, Yi Yan
University Chemistry    2021, 36 (10): 2102042 . DOI: 10.3866/PKU.DXHX202102042
Abstract (703)   HTML (22)    PDF (552KB)(271)       Knowledge map    Save

Hydrogel is a polymer with a three-dimensional network structure, and is widely used in food, daily necessities and high technology fields. This article introduced the applications of natural hydrogels in food by using the examples of delicacy from Xi'an. On one hand, the chemistry for the preparation of these foods was well introduced, especially the potential health hazards and identification methods of borax, industrial gelatin and alum in hydrogel food were also introduced. On the other hand, the properties and advanced applications of hydrogels are also included.

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Re-Os's Adventure
Jing Liu, Hongjie Song, Yi Lü, Rui Liu
University Chemistry    2021, 36 (10): 2107045 . DOI: 10.3866/PKU.DXHX202107045
Abstract (581)   HTML (8)    PDF (335KB)(238)       Knowledge map    Save

By anthropomorphizing Re and Os, an adventure journey is depicted to show people the detection principles and methods of Re-Os isotopic dating. It aims to combine the applications to vividly depict the popular science of Re-Os isotopic dating.

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A Competition between Tantalum Father and Niobium Daughter
Zhanli Chai
University Chemistry    2021, 36 (10): 2104010 . DOI: 10.3866/PKU.DXHX202104010
Abstract (721)   HTML (17)    PDF (485KB)(341)       Knowledge map    Save

Tantalum and niobium are father and daughter with similar properties. They have high chemical stability and wide applications. However, who is more unique and outstanding? This paper presents the properties and applications of niobium and tantalum compounds through the multi-round competition between father and daughter.

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Adventures in Blue Pigments: Cyanotype
Qiting He, Haofan Zhang
University Chemistry    2021, 36 (10): 2107107 . DOI: 10.3866/PKU.DXHX202107107
Abstract (1368)   HTML (76)    PDF (4118KB)(865)       Knowledge map    Save

The pursuit of perfect blue pigments since the 20th century has led to new breakthroughs in the field of contemporary art and the development of new pigments. After two years of research on Cyanotype, we created a series of cyanotype works using different materials and fine-tuned processes. Cyanotype experiment was chosen into the chemistry laboratory course. It is a "Cyanotype adventure" that blends chemistry and art by holding an art exhibition to introduce cyanotype to the public.

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The Journey of Vancomycin in the World
Pufan Qian, Ping Lü
University Chemistry    2021, 36 (10): 2106050 . DOI: 10.3866/PKU.DXHX202106050
Abstract (704)   HTML (12)    PDF (354KB)(293)       Knowledge map    Save

As the first molecule found in glycopeptide antibiotic family, vancomycin has been considered as the last line of defense for multidrug-resistant Gram-positive bacteria for a long time. In this paper, we utilized several short stories from different narrative perspectives to summarize the whole process of discovery and development of vancomycin. Furthermore, we also introduced some biochemical and organic concepts related to vancomycin at the same time.

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The Chemistry for Health: Formaldehyde
Zhe Liu, Tianfu Feng, Kin Shing Chan
University Chemistry    2021, 36 (10): 2106003 . DOI: 10.3866/PKU.DXHX202106003
Abstract (734)   HTML (29)    PDF (332KB)(356)       Knowledge map    Save

Through a story that the main character Xiaoquan visits the new house of his aunt and uncle, the series of dialogues on formaldehyde discloses the toxicity, the removal in indoor air and the chemistry mechanism. This article also introduced some practical uses of formaldehyde.

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Bacteria at Work: The War of Acid and Base in the Stomach
Senhai Zeng, Fangjun Chen, Zihan Chen, Kin Shing Chan
University Chemistry    2021, 36 (10): 2105024 . DOI: 10.3866/PKU.DXHX202105024
Abstract (624)   HTML (12)    PDF (755KB)(425)       Knowledge map    Save

This article describes the whole process of Xiao Ming getting a Helicobacter pylori infection, detecting this bacterial infection and curing the disease. It tells how the gastric wall cells protect themselves from the harm of gastric acid, the survival strategies for Helicobacter pylori in stomach, the detection methods and the treatment of Helicobacter pylori infection.

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Bird Nest's Journey of Way Back Home
Yinchen Fu, Pengfei Zhang, Wanmei Li
University Chemistry    2021, 36 (10): 2105015 . DOI: 10.3866/PKU.DXHX202105015
Abstract (672)   HTML (11)    PDF (389KB)(286)       Knowledge map    Save

Based on the "returning home" experience of Edible Bird Nest (EBN), the main components of EBN, the corresponding efficacy and harm, the preparation method of sialic acid in EBN, the adulteration and authenticity identification of EBN were described in the first person role by using anthropomorphic technique, so that readers can understand EBN in a vivid and lively way.

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A Tale of Rhodium and Iridium
Yiran Li, Lizheng Yao, Zining Dong, Jing Yan, Yi Yan
University Chemistry    2021, 36 (10): 2101057 . DOI: 10.3866/PKU.DXHX202101057
Abstract (990)   HTML (23)    PDF (381KB)(359)       Knowledge map    Save

Rhodium and iridium are two rare elements of the platinum family, and they have very similar properties. In a third-person personification, their unique physical and chemical properties, such as boiling point, reflectivity, elastic modulus, catalytic activity, and chemical stability have been introduced by designing a game of challenges. Additionally, the properties of their oxides and halides are also included, especially their applications in electroplating, automobile tail gas catalytic converters, thermocouple manufacturing.

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The Secret of the Palladium Family's Success
Yiwen Wei, Qin Kuang, Yaxian Zhu
University Chemistry    2021, 36 (10): 2104020 . DOI: 10.3866/PKU.DXHX202104020
Abstract (558)   HTML (18)    PDF (460KB)(298)       Knowledge map    Save

Palladium and its compounds have been widely used in human production and life. This paper compares palladium to a century-old family, and introduces the properties and applications of palladium from the perspective of a journalist.

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Cadmium's Journey
Rongjie Xie, Yaxian Zhu
University Chemistry    2021, 36 (10): 2105016 . DOI: 10.3866/PKU.DXHX202105016
Abstract (540)   HTML (15)    PDF (354KB)(288)       Knowledge map    Save

Cadmium and its compounds have many applications in human production and life, but it also causes environmental pollution. Herein, this paper shows the properties and applications of cadmium.

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Small Body, Big Light: Applications of Carbon Quantum Dots
Qitong Zhang, Tianxing Liu, Yu Wang
University Chemistry    2021, 36 (10): 2103032 . DOI: 10.3866/PKU.DXHX202103032
Abstract (822)   HTML (21)    PDF (662KB)(415)       Knowledge map    Save

The research on quantum dots has been very active in recent years. Among them, carbon quantum dots have attracted much attention due to their various advantages. In this paper, we describe the nature of carbon quantum dots and their applications in various industries by describing the development of the company and using anthropomorphic techniques. It aims to give the reader an easy and enjoyable introduction to carbon quantum dots.

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The Trial of Lean Meat Ingredients
Haoru Song, Shuya Lu, Hao Yin, Kin Shing Chan
University Chemistry    2021, 36 (10): 2105041 . DOI: 10.3866/PKU.DXHX202105041
Abstract (653)   HTML (18)    PDF (410KB)(335)       Knowledge map    Save

This article introduces clenbuterol through a trial that takes place in chemistry city. First, we introduce properties and medicinal value of clenbuterol, and explain the harm of clenbuterol in the trial. Then we elaborate the relationship and difference between clenbuterol and lean meat powder. Finally, detection methods of clenbuterol are presented to enhance people's understanding of clenbuterol.

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