一、概述1.测量依据JJF1059.1-2012《测量不确定度评定与表示》;JJG939-2009《原子荧光光度计检定规程》。2.环境条件温度为15℃~30℃,且相对稳定,相对湿度不大于80%。3.测量标准砷溶液标准物质(Urel=0.1%,k=2)。4.被测对象原子荧光光度计测砷元素的检出限。规程技术指标要求原子荧光光度计测砷检出限不得大于0.4ng。5.测量过程将仪器各参数调至最佳工作状态,用硼氢化钠 I. Overview 1. Measurement based on JJF1059.1-2012 “Measurement Uncertainty Evaluation and Expression”; JJG939-2009 “atomic fluorescence spectrophotometer test procedures.” 2. Environmental conditions Temperature is 15 ℃ ~ 30 ℃, and relatively stable, relative humidity less than 80%. 3. Measure standard arsenic standard (Urel = 0.1%, k = 2). 4. The measured object atomic fluorescence photometry arsenic detection limit. Procedures technical indicators require atomic fluorescence photometry arsenic detection limit of not more than 0.4ng. 5. Measurement process parameters of the instrument transferred to the best working condition, with sodium borohydride