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原子荧光法测定微量砷具有灵敏度高,简便易行,重现性好的特点,已成为砷含量分析的首选方法。CNAS-CL07明确指出,当不确定度与检测结果的有效性或应用有关或用户有要求时,或当不确定度影响到对规范限度的符合性时,当测定方法中有规定时和CNAS有要求时,检测报告必须提供测量结果的不确定度。本文根据国家质量监督检验检
The determination of trace arsenic by atomic fluorescence spectrometry has the characteristics of high sensitivity, simple and reproducible, and has become the preferred method of arsenic content analysis. CNAS-CL07 clearly states that when uncertainty is related to the validity or application of test results or requested by the user or when uncertainty affects the compliance with regulatory limits, when there is a stipulation in the method of determination and when CNAS is available When requested, the test report must provide the uncertainty of the measurement results. This article according to the national quality supervision and inspection