title: Development of a multiresidue method for the determination of multiclass pesticides in soil using GC.
abstract: The principal objective of the present study was to develop a multiresidue analytical method for 62 pesticides in a soil matrix. Soil samples were fortified with known quantities of pesticides at two different concentration levels (0.1 and 0.01 microg/g) and the analytes were extracted via a liquid-solid extraction method. The pesticides were separated on an HP5 capillary column and were detected by gas chromatography coupled to an electron capture detector (GC-ECD). The method was validated, considering its good linearities (r(2) = 0.978-0.999), specificity and recovery characteristics. Recoveries were found between 70.3 and 113.4% for all pesticides except edifenphos (67.5%) and dichlobenil (69.5%) spiked at a 0.1 microg/mL concentration level and 74.5-117% except ethalfluralin (63.3%) and dichlobenil (51.9%) spiked at a concentration of 0.01 microg/mL. The developed method could be utilized as a simple and cost-effective method for the routine analysis of 62 pesticides in soil samples.
authors.affiliation: Natural Products Chemistry Laboratory, Department of Biological Chemistry, College of Agriculture and Life Science, Chonnam National University, 300 Yongbong-dong, Bukgu, Gwangju 500-757, Republic of Korea.
authors.forename: Jong-Hyouk
authors.initials: JH
authors.lastname: Park
authors.forename: Md Iqbal Rouf
authors.initials: MI
authors.lastname: Mamun
authors.forename: Jeong-Heui
authors.initials: JH
authors.lastname: Choi
authors.forename: A M
authors.initials: AM
authors.lastname: Abd El-Aty
authors.forename: M E
authors.initials: ME
authors.lastname: Assayed
authors.forename: Woo Jung
authors.initials: WJ
authors.lastname: Choi
authors.forename: Kwang Sik
authors.initials: KS
authors.lastname: Yoon
authors.forename: Seong-Soo
authors.initials: SS
authors.lastname: Han
authors.forename: Hee Kweon
authors.initials: HK
authors.lastname: Kim
authors.forename: Byung Jun
authors.initials: BJ
authors.lastname: Park
authors.forename: Kap Soon
authors.initials: KS
authors.lastname: Kim
authors.forename: Sang Don
authors.initials: SD
authors.lastname: Kim
authors.forename: Hun Geun
authors.initials: HG
authors.lastname: Choi
authors.forename: Jae-Han
authors.initials: JH
authors.lastname: Shim
mesh_terms: D002849:Chromatography, Gas / Q000379:methods*; D010573:Pesticide Residues / Q000032:analysis*; D010575:Pesticides / Q000032:analysis*; D012987:Soil / Q000032:analysis; D012989:Soil Pollutants / Q000032:analysis*
chemical_list: D010573:Pesticide Residues; D010575:Pesticides; D012987:Soil; D012989:Soil Pollutants