title: Determination of metrafenone in bitter gourd and soil by GC with ECD.
abstract: A method for determination of metrafenone residues in bitter gourd and soil was developed. All samples were extracted with ethyl acetate, purified with the glass column of florisil and NH2-SPE column, analyzed by gas chromatography with electronic capture detector (GC-ECD). The results showed that it had good linearity in the range of 0.01-2 mg/L and the correlation coefficient (r) was 0.9999. The average recoveries of metrafenone in bitter gourd and soil were 83.51-91.75% and 84.76-91.72% with the relative standard deviation of 3.48-9.18% and 4.23-7.25%, respectively. The limit of detection was estimated to be 0.005 mg/kg, the minimum concentration of detection in bitter gourd and soil was 1 × 10(-2) mg/kg.
authors.affiliation: Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou 510640, PR China.
authors.forename: Siwei
authors.initials: S
authors.lastname: Wang
authors.affiliation: Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou 510640, PR China.
authors.forename: Yanping
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou 510640, PR China. Electronic address: sunhb@gdppri.cn.
authors.forename: Haibin
authors.initials: H
authors.lastname: Sun
mesh_terms: D001577:Benzophenones / Q000032:analysis*; D002849:Chromatography, Gas / Q000379:methods*; D057230:Limit of Detection; D029777:Momordica charantia / Q000737:chemistry*; D028321:Plant Preparations / Q000737:chemistry; D012987:Soil / Q000737:chemistry*
chemical_list: D001577:Benzophenones; D028321:Plant Preparations; D012987:Soil; C511340:metrafenone
keywords: Bitter gourd; Gas chromatography; Metrafenone; Residue; Soil