Gas liquid chromatographic determination of endosulfan technical and formulations collaborative study
Asshauer, J.; Watson, R.; Launer, J.E.
Journal - Association of Official Analytical Chemists 66(4): 999-1002
ISSN/ISBN: 0004-5756 Accession: 005504215
GLC determination of endosulfan technical and formulations was collaboratively studied with 11 laboratories. Samples (15) were dissolved in toluene with di(2-ethylhexyl)phthalate as the internal standard, chromatographed on a column of 10% OV-210, and detected by thermal conductivity. The average coefficients of variation were 0.55% for the 5 technical samples, 0.60% for the 5 wettable powders, and 0.68% for the 5 emulsifiable concentrates. The method was adopted official 1st action.