テルルの水素化物生成-非分散原子蛍光分析におけるテルル化水素発生方法の比較

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A comparative study for the determination of tellurium by hydride generation-nondispersive atomic fluorescence spectrometry has been carried out by utilizing two types of gas handling systems; one of them involves hydrogen telluride, generated by either zinc tablet (Zn method) or sodium tetrahydroborate powder (NaBH_4 powder method), to be collected in a vessel followed by introduction of the hydride into an Ar(air)-H_2 flame (i.e., collection mode) and the other the hydride, produced by injecting either sodium tetrahydroborate solution into a sample solution (NaBH_4 solution method [I]) or sample solution into a sodium tetrahydroborate solution (NaBH_4 solution method[II]), to be introduced directly into the flame (i.e., directtransfer mode). Detection limits (S/N = 3) are 4 ng, 8 ng, 2 ng, and 30 ng of tellurium in NaBH_4 solution methods[I] and [II], Zn method and NaBH_4 powder method, respectively, and reagent blanks (corresponding to analyte mass) are 10 ng, 0, 30 ng, and 500 ng of tellurium. Analytical working curves obtained with the first three methods are linear over a range of ca. 4 orders of magnitude from the lowest determinable amount of 10-ng tellurium, whereas the last gives a linear dynamic range of ca. 3 orders of magnitude with the smallest determinable amount of 100-ng tellurium. There is little or no significant difference in reproducibility of signal measurement and interelement interference effect among these four methods.
社団法人日本分析化学会の論文
1982-09-05

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中原武利
大阪府立大学

テルルの水素化物生成-非分散原子蛍光分析におけるテルル化水素発生方法の比較

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