%0 Journal Article %T 气相色谱法测定水质中的内吸磷 %T Determination of Demeton in Water by Gas Chromatography %A 朱小梅,张宗祥,丁金美 %A ZHU,Xiao mei %A ZHANG,Zong xiang %A DING,Jin mei %J 环境监控与预警 %@ 1674-6732 %V 11 %N 4 %D 2019 %P 32-36 %K 气相色谱法;水质;内吸磷;内吸磷-O;内吸磷-S,分离 %K Gas chromatography; Water quality; Demeton ; DemetonO; DemetonS; Separation %X 优化了气相色谱法测定水质中的内吸磷,当取样量为100 mL时,内吸磷-O方法检出限为0.30 μg/L,测定下限为120 μg/L;内吸磷-S方法检出限为0.80 μg/L,测定下限为3.20 μg/L。内吸磷-O和内吸磷-S标准曲线线性良好,相关系数分别为0.999 2和0.999 8。不同水质中内吸磷-O的加标回收率为90.3% ~104%,相对标准偏差为3.6% ~9.2%;内吸磷-S的加标回收率为92.1% ~94.9%,相对标准偏差为4.6% ~8.7%。该方法灵敏度高,能有效分离内吸磷-O和内吸磷-S,同时能将内吸磷-O、内吸磷-S与其他有机磷农药类干扰物分离。 %X The detection method of demeton in water by gas chromatography was optimized. When the sample volume was 100 mL,detection limit of demetonO was 0.30 μg/L, with a lower detection limit of 1.20 μg/L, while the detection limit of demetonS was 0.80 μg/L, with a lower detection limit of 3.20 μg/L. DemetonO and demetonS both showed excellent linarity, the correlation coefficients were 0.999 2 and 0.999 8, respectively. In different water quality, the spike recoveries of demetonO ranged from 90.3% to 104%, the relative standard deviations were in the range of 3.6% ~9.2%. And the spike recoveries of demetonS ranged from 92.1% to 94.9%, the relative standard deviations were in the range of 4.6% ~8.7%. The method had high sensitivity, it could effectively separate demetonO and demetonS, and could be separated effectively from other organophosphorus pesticide distractors. %R %U http://www.hjjkyyj.com/hjjkyyj/ch/reader/view_abstract.aspx %1 JIS Version 3.0.0