| 15739373 |
Qu G, Yang J, Li J, Xie L: [Quantitative analysis of phoxim and cypermethrin using wide bore capillary column gas chromatography]. Se Pu. 1997 May;15(3):252-3.
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. |
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