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Dowex Marathon A固相萃取-氢化物发生-原子荧光光谱法测定食品和水中硒含量

Hang WU,Xiaojun JIANG,Linlin L(U),Tian AI

Food Science（2017）

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Abstract
建立食品和水样中硒的Dowex Marathon A固相萃取-氢化物发生-原子荧光光谱检测方法,基于Dowex Marathon A树脂交换技术消除食品和水中金属离子对硒含量测定的干扰.硒的检出限为0.013 μg/L,定量限为0.043 tg/L,线性定量范围为0.1～10.0 μg/L,线性相关系数为0.999 9,方法回收率不小于95％,相对标准偏差小于3％(n=11).方法操作简单、灵敏度高、回收率好,适用于多种食品和水样中硒含量的测定,准确性通过标准物质验证,结果满意.
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