Fused-Silica Capillary Dropping Mercury Electrode for Electrocapillary Measurements
Fused-Silica Capillary Dropping Mercury Electrode for Electrocapillary Measurements
复制标题
用于电毛细管测量的熔融石英毛细管滴汞电极
DOI：
10.1002/elan.201200382
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发表时间：
2013
期刊：
影响因子：
3
通讯作者：
P. Barták
中科院分区：
文献类型：
--
作者：
J. Součková;J. Skopalová;H. Svecova;P. Barták
采用自制的熔融石英毛细管滴汞电极，通过电毛细管测量研究了复杂体系的吸附行为。大豆磷脂的混合物，称为asolectin，用于此目的。所提出的设置与熔融二氧化硅毛细管电极能够观察asolectin聚集体在汞电极表面的聚集和吸附，并确定对应于asolectin胶束（临界胶束浓度，CMC）和脂质体（临界脂质体浓度，CLC）的形成的浓度。CMC（196.2-39.0 mg L-1）和CLC（1360-350 mg L-1）的值是根据滴加时间对1 - 50 mmol L-1浓度范围内的磷酸盐缓冲液（pH 7.0）中asolectin浓度对数的依赖性获得的。
A homemade fused-silica capillary dropping mercury electrode was used for the investigation of the adsorption behavior of a complex system by electrocapillary measurements. A mixture of soybean phospholipids, known as asolectin, was used for this purpose. The proposed setup with a fused-silica capillary electrode enables to observe aggregation and adsorption of asolectin aggregates at the mercury electrode surface and to determine the concentrations corresponding to the formation of asolectin micelles (critical micelle concentration, CMC) and liposomes (critical liposome concentration, CLC). Values of CMC (196.2–39.0 mg L−1) and CLC (1360–350 mg L−1) were obtained from the dependence of drop time on the logarithm of asolectin concentration in phosphate buffer pH 7.0 within a concentration range from 1 to 50 mmol L−1.