Determination of 12 Kinds of Organophosphorus Pesticides in Water by Capillary Column Gas Chromatography
- VernacularTitle:水中12种有机磷农药的毛细管气相色谱测定法
- Author:
Yuhong LIU
;
Shiping SUN
- Publication Type:Journal Article
- Keywords:
Water;
Chromatography, gas;
Organophosphorus pesticides;
Liquid-liquid extraction;
Capillary column gas chromatography
- From:
Journal of Environment and Health
1992;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish a method for simultaneous determination of 12 kinds of organophosphorus pesticides in water. Methods Organophosphorus pesticides in the water were extracted by liquid-liquid extraction, then analyzed with DB-1701 capillary column. In the same time, they were determined with GC by controlling the temperature and the speed of nitrogen. Retention time of the peaks was used for qualitative analysis, while external standard method was used for the quantitative analysis. Results The linear ranges of organophosphorus pesticides were 0.2～50.0 ?g/L, r≥0.999 1. The lowest detection limit was 0.009～0.04 ?g/L, the rate of recovery were 78.4%～93.9% and RSDs were 3.4%～7.5%. Conclusion This method is simple, rapid, sensitive and can efficiently separate and determine 12 kinds of organophosphorus pesticides in the water with 32.5 minutes of operation only.
