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通过重量法配制一系列浓度的铬、铜离子标准溶液,并使用能量色散X射线荧光光谱仪(EDXRF)进行测试.记录对应的计数值,制作了铬、铜离子在1×10-6~100×10-6以内的标准工作曲线.实验表明,所得曲线线性关系良好,R2>0.99;当铬、铜离子浓度在100~101×10-6范围内时仪器具有较好测量准确性.
A series of chromium and copper ion standard solutions were prepared by gravimetric method and tested by energy dispersive X-ray fluorescence spectrometer (EDXRF) .Counting values were recorded and chromium and copper ions were prepared at 1 × 10-6 ~ 100 × 10-6 within the standard working curve. Experiments show that the resulting curve has a good linear relationship R2> 0.99; when the chromium and copper concentrations in the range of 100 ~ 101 × 10-6 instruments with good measurement accuracy.