Chemiluminescence Detection of 10-16mol/L Level Co(Ⅱ) with Field-amplified Sample Injection in Capillary Electrophoresis

Abstract

Abstract: Amethod of online ultrasensitive chemiluminescence detection with capillary electrophoresis for Co(Ⅱ) is reported. Using our newly developed capillary electrophoresis with chemiluminescence detection system and novel mixing mode of the reagents, the effects of fieldamplified sample injection on detection limits of metal ions were studied in detail. The subfmol/Llevel(0.13 fmol/L, 1.6 ymol) detection of cobalt ions in ultradilute solution was performed. The separation of fmol/Llevel Co(Ⅱ) and trace amounts of Ni(Ⅱ) was performed successfully.

Key words: Capillary electrophoresis, Chemiluminescence detection, Fieldamplified sample injection, Single molecules level, Cobalt(Ⅱ)

CLC Number:

O657

TrendMD:

LIU YanMing, LIU ErBao, CHENG JieKe  . Chemiluminescence Detection of 10^-16mol/L Level Co(Ⅱ) with Field-amplified Sample Injection in Capillary Electrophoresis[J]. Chem. J. Chinese Universities, 2001, 22(12): 2005.

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Chemiluminescence Detection of 10^-16mol/L Level Co(Ⅱ) with Field-amplified Sample Injection in Capillary Electrophoresis

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