University Chemistry ›› 2021, Vol. 36 ›› Issue (10): 2107095.doi: 10.3866/PKU.DXHX202107095

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Alum's Time-Travel Journey

Yuhan Jin1,*(), Jinxin Guo2,*()   

  1. 1 School of Basic Medical Sciences, Shandong University, Jinan 250012, China
    2 College of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
  • Received:2021-07-27 Accepted:2021-09-03 Published:2021-09-13
  • Contact: Yuhan Jin,Jinxin Guo;


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.

Key words: Alum, Water purification, Mordant, Traditional Chinese medicine, Food additive