柱前电化学衍生-高效液相色谱法测定鱼肉中结晶紫和隐性结晶紫
Chinese Journal of Analysis Laboratory（2016）
Abstract
建立了柱前电化学氧化还原衍生-高效液相色谱测定鱼肉中结晶紫(CV)及隐性结晶紫(LCV)残留量的方法.试样用体积分数0.5％乙酸乙腈溶液提取,酸性氧化铝吸附剂净化,乙腈和乙酸铵缓冲液(78∶22,V/V)等度洗脱,柱前库仑检测器500 mV电压下LCV衍生为CV,588 nm波长检测.CV,LCV含量在0.010 ～0.50 mg/L范围内线性良好(γ＞0.998),检出限为2.0 μg/kg,定量限为5.0 μg/kg.加标回收率为86.0％ ～91.0％.方法精密度、正确度和检出限等性能指标均达到兽残分析的要求,可用于水产品中CV,LCV测定.
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Key words
Crystal Violet,Pre-column Coulometric Electrochemical Derivation,Leucocrystal violet,High performance liquid chromatography
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