TY - JOUR
T1 - Introduction of large volumes of methylene chloride in capillary GC with electron capture detection
AU - Staniewski, J.
AU - Janssen, J.G.M.
AU - Rijks, J.A.
AU - Cramers, C.A.
PY - 1993
Y1 - 1993
N2 - A system is presented that allows direct introduction of large vols. of CH2Cl2 in capillary gas chromatog. (GC) using the electron capture detector (ECD). The system is based on a 2-dimensional (1-oven) GC instrument equipped with a programmed temp. injector. During sample introduction, the solvent is eliminated via the split line. Residual traces of CH2Cl2 that enter the precolumn are eliminated via a column-switching device located between the precolumn and the anal. column. The system is used for the anal. for pesticides and polychlorinated biphenyls (PCBs) in CH2Cl2 at ultra low concns. The introduction of large sample vols. significantly improved the detection limits. Using the system described here, the solvent exchange step, normally necessary when the ECD is used to analyze samples contg. CH2Cl2 as the solvent, is no longer required
AB - A system is presented that allows direct introduction of large vols. of CH2Cl2 in capillary gas chromatog. (GC) using the electron capture detector (ECD). The system is based on a 2-dimensional (1-oven) GC instrument equipped with a programmed temp. injector. During sample introduction, the solvent is eliminated via the split line. Residual traces of CH2Cl2 that enter the precolumn are eliminated via a column-switching device located between the precolumn and the anal. column. The system is used for the anal. for pesticides and polychlorinated biphenyls (PCBs) in CH2Cl2 at ultra low concns. The introduction of large sample vols. significantly improved the detection limits. Using the system described here, the solvent exchange step, normally necessary when the ECD is used to analyze samples contg. CH2Cl2 as the solvent, is no longer required
U2 - 10.1002/mcs.1220050506
DO - 10.1002/mcs.1220050506
M3 - Article
SN - 1040-7685
VL - 5
SP - 429
EP - 432
JO - Journal of Microcolumn Separations
JF - Journal of Microcolumn Separations
IS - 5
ER -