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在前文的基础上对TS-ETV-AES(钨丝电热蒸发进样一直流电弧光谱分析法)作了进一步的研究。考察了蒸发容器的大小对谱线黑度的影响,并对相应的实验参数进行了优化,还考察了Co、Cr、Ni、Mn、He、B、Zn、Cd、Pb、Mo等10个元素在钨丝上的蒸发行为及NaCl的基体效应。在最佳条件下得到Cr、Ni、Mn、Mg、B、Pb、Mo、Co的检出限和RSD分别为:1.4×10~(-9),5.3%;10.2×10~(-9)g,9.71%;2.5×10~(-9)g,13.3%;3.4×10~(-9)g,3.9%;46×10~(-9)g,23.7%;10.2×10~(-9)g,10.9%:8.9×10~(-9)g,7.2%。用该法分析了水样,所得结果同GFAAS法基本吻合。
On the basis of the previous TS-ETV-AES (tungsten electrothermal evaporation injection DC current spectroscopy) for further study. The effects of the size of the evaporation vessel on the blackness of the line were investigated. The corresponding experimental parameters were optimized. 10 elements of Co, Cr, Ni, Mn, He, B, Zn, Cd, Pb and Mo Evaporation Behavior on Tungsten Wire and Matrix Effect of. The detection limits and RSD of Cr, Ni, Mn, Mg, B, Pb, Mo and Co obtained under the optimal conditions were 1.4 × 10 -9, 5.3% and 10.2 × 10 -9, respectively. g, 9.71%, 2.5 × 10 -9 g, 13.3%, 3.4 × 10 -9 g, 3.9%, 46 × 10 -9 g, 23.7%, 10.2 × 10 ~ 9) g, 10.9%: 8.9 × 10 ~ (-9) g, 7.2%. The method was used to analyze the water samples and the results were in good agreement with the GFAAS method.