最大泡压法测定溶液表面张力实验条件的优化

董金龙, 刘雪娟, 赵婷婷, 文斌, 韩红斐

Optimization of Experimental Conditions for Determination of Surface Tension of Solution by the Maximum Bubble Pressure Method

Jinlong Dong, Xuejuan Liu, Tingting Zhao, Bin Wen, Hongfei Han

表3 25 ℃时最大泡压法测定正丁醇溶液表面张力数据

序号 c/(mol?L?1) Δp/kPa σ/(N?m?1) dσ/dc 105 × Γ/(mol?m?2) 10?4 × c/Γ/(m2?L?1) 1 0.000 0.602 0.0720 / / / 2 0.025 0.549 0.0657 ?0.199 2.01 1.24 3 0.050 0.514 0.0615 ?0.153 3.09 1.62 4 0.100 0.463 0.0553 ?0.104 4.22 2.37 5 0.150 0.425 0.0509 ?0.0794 4.81 3.12 6 0.200 0.387 0.0463 ?0.0640 5.17 3.87 7 0.250 0.368 0.0440 ?0.0536 5.41 4.62 8 0.300 0.351 0.0420 ?0.0461 5.59 5.37