| 引用本文: | 朱小梅，张宗祥，丁金美.气相色谱法测定水质中的内吸磷[J].环境监控与预警,2019,11(4):32-36 |
| ZHU Xiao-mei, ZHANG Zong-xiang, DING Jin-mei.Determination of Demeton in Water by Gas Chromatography[J].Environmental Monitoring and Forewarning,2019,11(4):32-36 |
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| 摘要: |
| 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120 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。 |
| 关键词: 气相色谱法 水质 内吸磷 内吸磷-O 内吸磷-S，分离 |
| DOI： |
| 分类号:X832；O657.7+1 |
| 文献标识码:B |
| 基金项目: |
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| Determination of Demeton in Water by Gas Chromatography |
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ZHU Xiao-mei, ZHANG Zong-xiang, DING Jin-mei
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Jiangsu Taizhou Environmental Monitoring Center, Taizhou, Jiangsu 225300,China
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| Abstract: |
| 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. |
| Key words: Gas chromatography Water quality Demeton Demeton O Demeton S Separation |
