| 双硫腙螯合型树脂同时分离富集-火焰原子吸收光谱法测定痕量铅和镉 |
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| 引用本文： | 卢菊生,田久英,吴宏,李广超.双硫腙螯合型树脂同时分离富集-火焰原子吸收光谱法测定痕量铅和镉[J].分析试验室,2009,28(4). |
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| 作者姓名： | 卢菊生 田久英 吴宏 李广超 |
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| 作者单位： | 徐州师范大学化学化工学院,徐州,221116 |
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| 基金项目： | 江苏省高校自然科学基金，徐州师范大学自然科学基金 |
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| 摘 要： | 以大孔聚苯乙烯树脂为母体,通过-N=N-,与双硫腙键合,合成了双硫腙螯合型树脂,并将其应用于痕量铅和镉的同时分离富集,实验了酸度、流速、共存离子干扰等因素对双硫腙螯合型树脂吸附和洗脱Pb和Cd的影响,建立了双硫腙螯合型树脂同时分离富集-火焰原子吸收光度法测定食品及环境样品中痕量Pb和Cd的方法.对Pb和Cd,方法的检出限分别为0.015和0.0013μg/mL,相对标准偏差(RSD)均优于3.0%.
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| 关 键 词： | 双硫腙螯合型树脂 火焰原子吸收法 Pb和Cd |
Simultaneous separation,concentration and determination of trace lead and cadmium with dithizonic chelating resin by flame atomic absorption spectrometry |
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| LU Ju-sheng,TIAN Jiu-ying,WU Hong,LI Guang-chao.Simultaneous separation,concentration and determination of trace lead and cadmium with dithizonic chelating resin by flame atomic absorption spectrometry[J].Chinese Journal of Analysis Laboratory,2009,28(4). |
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| Authors: | LU Ju-sheng TIAN Jiu-ying WU Hong LI Guang-chao |
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| Affiliation: | School of Chemistry & Chemical Engineering;Xuzhou Normal University;Xuzhou 221116 |
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| Abstract: | A dithizonic chelating resin was synthesized by coupling macro-porous polystyrene resin functionalized with dithizone through-N=N-group,and was used to separate and concentrate trace lead and cadmium by column chromatography.The factors,which affected the adsorption and elution of lead and cadmium,such as acidity,flow rate and interference of co-existing ions were tested.A method for the simultaneous separation,concentration and determination of trace cadmium and lead with dithizonic chelating resin by flam... |
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| Keywords: | Dithizonic chelating resin Flame atomic absorption spectrometry Lead and cadmium |
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