Fe(Ⅲ)-三乙醇胺-NaBrO_3极谱配合吸附催化波及人发微量铁的测定 |
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摘 要: | 用示波极谱二次导数波法研究了Fe(Ⅲ)-三乙醇胺极谱配合吸附波和Fe(Ⅲ)-三乙醇胺-NaBrO3极谱配合吸附催化波。在KOH支持电解质中,Fe(Ⅲ)在三乙醇胺存在下于-0.76V(SCE)左右产生灵敏的极谱配合吸附波,Fe(Ⅲ)的检测限为1×10-8mol/L,线性范围为1×10-8~8×10-6mol/L。在上面溶液中加入适量的NaBrO3后,产生更为灵敏的极谱配合吸附催化波,Fe(Ⅲ)的检测限为1×10-9mol/L,线性范围为1×10-9~7×10-6mol/L。测定了模拟发样、国家一级标准发样及混合发样中Fe含量,并与Fe(Ⅲ)-乙二胺极谱配合吸附波法进行了比较,结果满意
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关 键 词: | 铁;极谱;配合吸附催化波;人发 |
Polarographic Adsorptive Complex Catalytic Wave of Fe(Ⅲ)-Triethanolamine-NaBrO_3 and Determination of Fe Trace in Human Hair |
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Abstract: | Both polarographic adsorptive complex wave of Fe(Ⅲ)-triethanolamine and polarographic adsorptive complex catalytic wave of Fe(Ⅲ)-triethanolamine- NaBrO3 are described,and the trace of iron in human hair is satisfactorily determined by this technique. |
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Keywords: | polarography iron hair |
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