Open AccessRapid Electroconcentration in a Tube of 25-40 Microliters under a Relatively Low Applied Voltage
Author(s) -
Shinya Kitagawa,
Tsutomu Aragaki,
Toshitaka Tsuda,
Takatoshi Matsumoto
Publication year - 1996
Publication title -
analytical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 73
eISSN - 1348-2246
pISSN - 0910-6340
DOI - 10.2116/analsci.12.581
Subject(s) - chemistry , tube (container) , silicone rubber , electrode , voltage , analytical chemistry (journal) , chromatography , drift tube , sample (material) , composite material , ion , electrical engineering , materials science , organic chemistry , engineering
Electroconcentration can be performed using a very simple apparatus and a simple operational procedure. The apparatus is composed of one tube, two electrodes and a power supply. The total sample solution employed for electroconcentration was just 25-40μl. After a tube of silicone rubber (i.d. 1mm, 30-50mm long) was filled with a sample solution, an electric voltage was applied along the tube, and a charged solute was forced to migrate to the end of the tube. With an application of 200-400V for only 2-4min, the concentration of the solute was enhanced up to 10 times. In the present electroconcentration, the sample is concentrated in a few microliters. Electroconcentration by electrode transfer is also proposed