摘要
研究了采用原子荧光光谱法测定地质样品中硒含量的硝酸+高氯酸酸法和碳酸钠+氧化锌半熔法2种前处理方法。结果表明,硝酸+高氯酸酸法操作流程短、准确度较高,但灵敏度较低;碳酸钠+氧化锌半熔法灵敏度较高,但是操作流程长,且在测定含硫量较高的样品时准确度低。
Two pretreatment methods(HNO_3+HClO_4 method and zinc oxide half-dissolving method)for determination of selenium in geological samples by HG-AFS were studied. The results showed that the HNO_3+HClO_4 method had higher accuracy and lower sensitivity,and was simple to operation. The zinc oxide half-dissolving method had higher sensitivity,but had the defect of long time-consuming,and the accuracy was low in determination of the sample with high-content of sulfur.
引文
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