【摘要】 目的研究AFS-230双道原子荧光光度计同时测定饮用水中的砷和硒的方法,为检测水样中的砷和硒提供依据。方法选择了最佳的仪器条件,进行了样品处理方法及酸度、硼氢化钾浓度、检出限、线性范围、精密度、加标回收率等研究。结果本法线性关系砷为0~40ug/L,硒为0~80ug/L。检出限砷为0.211ug/L,硒为0.486ug/L。相对标准偏差砷为1.41%,硒为1.06%。平均加标回收率砷为101%;硒为91.3%。结论本方法操作简便,灵敏度高,快速,便于推广,适用于水中砷和硒的测定。更多还原

【Abstract】 Objective To simultaneously determine arsenic and selenium in drinking water by AFS-230 atomic fluorescence spectometer so as to explore a simple method.Method and results The instrument condition, sample disposal,acidity and concentration of potassium borohydride were optimized,and the limit of determination,determination range,precision and accuracy of the method were acquired.Conclusion The method was simple and suitable for determining arsenic and selenium in drinking water at the same time and could be popularized with high sensitivity.更多还原