渔业科学进展Issue(4)：132-138,7.DOI:10.11758/yykxjz.20150420
气相色谱-质谱法测定渔业水质中8种除草剂的残留量
Determination of Eight Herbicides in Fishery Water by Gas Chromatography-Mass Spectrometry
摘要
Abstract
To measure herbicides residues in fishery water, gas chromatography-mass spectrometry was developed to determine trifluralin, pendimethalin, alachlor, acetochlor, butachlor, simazine, atrazine, and prometryn. The samples were adjusted to salinity 20−30 with NaCl, extracted by dichloromethane, and cleaned up with Florisil solid phase extraction (SPE) column. The analytes were detected by gas chromatography-mass spectrometry under the selected reaction monitoring mode and quantified by external standard method. The peak area was linear to the concentration of eight herbicides residues (0.010−1.000 µg/L), and the correlation coefficients (R2) were all more than 0.990. According to S/N≥3, the detection limit of rifluralin, simazine, atrazine, acetochlor, alachlor, prometryn, pendimethalin, and butachlo were 0.022, 0.031, 0.028, 0.038, 0.041, 0.035, 0.025, and 0.020 μg/L, respectivly. The limit of quantification was 0.05 μg/L for all eight herbicides based on the actual samples spiked recoveries between 70% and 120%, S/N≥10, and the relative standard deviation≤15%. The average recovery of the eight herbicides fortified in different negative samples at 0.05, 0.5, and 2.0 µg/L were in the range of 74.7%−97.7%, and the relative standard deviations were less than 12.00%. These results indicated that the method has the advantage of simplicity, sensitivity and repeatability, which could provide technical support for the detection of these eight herbicides residues in fishery water.关键词
除草剂/渔业水质/气相色谱-质谱法/检测Key words
Herbicides/Fishery water/Gas chromatography-mass spectrometry/Detection分类
农业科技引用本文复制引用
罗方方,王艳君,叶玫,余颖,刘海新,姜琳琳..气相色谱-质谱法测定渔业水质中8种除草剂的残留量[J].渔业科学进展,2015,(4):132-138,7.基金项目
福建省省属公益类科研院所基本科研专项(2012R1101-5)资助。 （2012R1101-5）
