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青紫泥中五氯酚的超声萃取-液相色谱法测定

Keywords: 超声萃取,液相色谱,青紫泥,五氯酚

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Abstract:

研究了超声萃取结合高效液相色谱技术在青紫泥五氯酚残留分析测定中的应用,包括不同提取剂(乙腈、二氯甲烷)和反应体系酸度及提取时间、温度对微波提取效率的影响。结果表明,超声萃取结合高效液相色谱技术可以实现青紫泥中五氯酚残留的快速、有效、准确分析。对于青紫泥中五氯酚的超声萃取-高效液相色谱测定方法,以乙腈作为提取剂,加0.045mol·L-1的硫酸酸化,振荡30min,40℃超声萃取60min,可以得到87%~108%的回收率。将供试青紫泥样品风干、磨细可以较鲜土获得更好的超声萃取效果,使一次超声提取合理、且可行。

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