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环境化学  2015 

三维荧光二阶校正法快速测定环境水体和淤泥样中麦穗宁残留量

Keywords: 麦穗宁,三维荧光,二阶校正,交替三线性分解,化学计量学

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Abstract:

将激发发射荧光光谱与化学计量学基于交替三线性分解(ATLD)算法的二阶校正方法相结合,实现了自来水、湘江水、池塘水、雨水和淤泥5种实际复杂体系中麦穗宁含量的直接快速定量测定.当选取组分数为2时,用ATLD算法分辨获得的平均回收率分别为(100.5±1.3)%、(93.8±1.1)%、(95.0±2.1)%、(98.2±2.3)%和(91.3±1.6)%,检测下限(LOD)分别为0.58、1.38、4.47、5.60、0.43pg·mL-1.另外,还用椭圆置信区间(EJCR)测试,品质因子如灵敏度(SEN)、选择性(SEL)和定量检测限(LOQ)评估了方法的准确性.实验结果表明,该方法能够实现未知荧光背景干扰共存下麦穗宁含量的直接快速定量测定.

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