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液液萃取—气相色谱法测定水中的亚硝胺条件实验研究 被引量:3

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摘要 建立了水中4种亚硝胺类化合物的液液萃取-气相色谱法分析方法。主要通过液液萃取过程中p H、萃取次数、萃取时间、萃取后静置时间、萃取体积和萃取浓缩条件实验优化了分析方法。实验结果表明,在p H6-9、萃取次数3次、萃取时间2min、萃取后静置时间10min、萃取体积50m L、萃取浓缩条件为旋蒸时水浴温度为40℃,旋转速度为60r/min时回收率最高。
出处 《甘肃科技》 2014年第21期29-32,共4页 Gansu Science and Technology
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参考文献18

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共引文献83

同被引文献27

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