Electrophoresis in nanometer inner diameter capillaries with electrochemical detection

被引:34
作者
Woods, LA [1 ]
Roddy, TP [1 ]
Paxon, TL [1 ]
Ewing, AG [1 ]
机构
[1] Penn State Univ, Dept Chem, Davey Lab 152, University Pk, PA 16802 USA
关键词
D O I
10.1021/ac010053e
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Separations have been achieved in 770- and 430-nm-inner diameter capillaries. The extremely low sample volumes involved in the study of biological microenvironments; such as single cells has led to the desire to develop separation techniques in these ultrasmall capillaries. Total sample volumes as low as 12 fL have been injected using these nanometer inner diameter capillaries. Separations of several catecholamines have been accomplished in these submicrometer capillaries using both capillary zone electrophoresis and micellar electrokinetic chromatography with end-column amperometric detection.
引用
收藏
页码:3687 / 3690
页数:4
相关论文
共 24 条
[1]   DISCOVERY OF ENDOGENOUS CATECHOLAMINES IN LYMPHOCYTES AND EVIDENCE FOR CATECHOLAMINE REGULATION OF LYMPHOCYTE FUNCTION VIA AN AUTOCRINE LOOP [J].
BERGQUIST, J ;
TARKOWSKI, A ;
EKMAN, R ;
EWING, A .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1994, 91 (26) :12912-12916
[2]   Chemical analysis of single cells and exocytosis [J].
Chen, GY ;
Ewing, AG .
CRITICAL REVIEWS IN NEUROBIOLOGY, 1997, 11 (01) :59-90
[3]  
CHIEN J, 1990, J NEUROSCI METH, V34, P1
[4]   Probing single secretory vesicles with capillary electrophoresis [J].
Chiu, DT ;
Lillard, SJ ;
Scheller, RH ;
Zare, RN ;
Rodriguez-Cruz, SE ;
Williams, ER ;
Orwar, O ;
Sandberg, M ;
Lundqvist, JA .
SCIENCE, 1998, 279 (5354) :1190-1193
[5]   MICROCOLUMN SEPARATIONS OF SINGLE NERVE-CELL COMPONENTS [J].
EWING, AG .
JOURNAL OF NEUROSCIENCE METHODS, 1993, 48 (03) :215-224
[6]   CAPILLARY ELECTROPHORESIS [J].
EWING, AG ;
WALLINGFORD, RA ;
OLEFIROWICZ, TM .
ANALYTICAL CHEMISTRY, 1989, 61 (04) :A292-+
[7]   POSTCOLUMN DERIVATIZATION IN NARROW-BORE CAPILLARIES FOR THE ANALYSIS OF AMINO-ACIDS AND PROTEINS BY CAPILLARY ELECTROPHORESIS WITH FLUORESCENCE DETECTION [J].
GILMAN, SD ;
PIETRON, JJ ;
EWING, AG .
JOURNAL OF MICROCOLUMN SEPARATIONS, 1994, 6 (04) :373-384
[8]  
GILMAN SD, 1995, J CAPILLARY ELECTROP, V2, P1
[9]   Characterizing spectrally diverse biological chromophores using capillary electrophoresis with multiphoton-excited fluorescence [J].
Gostkowski, ML ;
McDoniel, JB ;
Wei, J ;
Curey, TE ;
Shear, JB .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (01) :18-22
[10]   Measurements of serotonin and related indoles using capillary electrophoresis with multiphoton-induced hyperluminescence [J].
Gostkowski, ML ;
Wei, J ;
Shear, JB .
ANALYTICAL BIOCHEMISTRY, 1998, 260 (02) :244-250