炼油工业渣泥中砷含量测试方法的精密度试验与研究

Test and Research on Precision of the Test Method(HG-AAS) to Determine Arsinic in Sludge from Refining Industry

为确定炼油工业渣泥中砷含量测定的氢化物发生－原子吸收方法的精密度，在6个实验室内对5种砷含量水平的试样进行了测试．结果表明，该方法的重复性r符合lgr＝－0．678＋0．746lgm，再现性R符合lgR＝－0.448＋0．845lgm．

The sludge samples at five arsinic levels were determined in six labs, in order to decidethe precision of the hydride generation-atomic absorption spectroscopy (HG-AAS)of determining thearsinic content of sludge from the petroleum refining industry. The experimental results show that therepeatability of HG-AAS can be exprressed by lg r= -0.678-0.764lg m and the reproducibility byle R = - 0.448 -0.845 lg m.