[Quantitative analysis of phoxim and cypermethrin using wide bore capillary column gas chromatography].
A compound pesticide, 20% P-C emulsion, consisting of 18.5% phoxim and 1.5% cypermethrin pesticides and other accessory agents is especially effective in controlling and killing boll worms. For its quality control some difficulties were encountered. In this paper we propose a simple and practical method for GC analysis of the product by use of a short wide bore capillary column (HP-1, 5m x 0.53mm x 2.65microm), high carrier gas flow rate and high-speed temperature programming etc.. Content analysis of efficient composition of "20% P-C emulsion" was completed under the chromatographic conditions using methyl parathion as an internal standard. Coefficient of variation of phoxim and cypermethrin were 0.67% and 1.0% respectively.
Qu
G
G
Chemistry Department, Henan Normal University, Xinxiang, 453002.
Yang
J
J
Li
J
J
Xie
L
L
D002849:Chromatography, Gas / Q000295:instrumentation / Q000379:methods*; D009946:Organothiophosphorus Compounds / Q000032:analysis*; D010575:Pesticides / Q000032:analysis*; D011722:Pyrethrins / Q000032:analysis*
D009946:Organothiophosphorus Compounds; D010575:Pesticides; D011722:Pyrethrins; C017160:cypermethrin; C003135:phoxim