STUDY ON SORPTION OF PESTICIDES BY Mn02 AND ITS APPLICATION FOR DETERMINATION OF ORGANOCHLORINATED PESTICIDES IN WATER SAMPLES BY GC-ECD

Lê Ngọc Chung, Nguyễn Đức Thuận

Abstract


A method for the determination of organochlorine pesticides in the water samples by gas chromatography is described. The method consists of sorption of pesticides in water by Mn02 sorbent with a water: Chloroform (10:1, V/V) mixture. then the target compounds are desorbed with a acetone: n-hexane (3:1, V/V) mixture and final determination by GC-ECD. The method allows the determination of organochlorine pesticides (BHC; 4,4' DDT; 4,4' DDD; 4,4' DDE; aldrin, dieldrin, endrin, endosulfan 1, endosulfan sulfate, heptachlor, heptachlor epoxide, methoxy chlor) with relative standard deviation of 10-15%.


Keywords


Organochlorine pesticides; GC-ECD method.



DOI: http://dx.doi.org/10.37569/DalatUniversity.3.3&4.258(2013)

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