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| 高效液相色谱-在线消解-氢化物发生原子吸收光谱联用技术研究 | |
| 引用本文： | 刘华琳,赵蕊,韦超,邢志,闫继仁,张新荣.高效液相色谱-在线消解-氢化物发生原子吸收光谱联用技术研究[J].分析化学,2005,33(11):1522-1526. |
| 作者姓名： | 刘华琳 赵蕊 韦超 邢志 闫继仁 张新荣 |
| 作者单位： | 1. 清华大学化学系,原子分子纳米科学教育部重点实验室,北京,100084;山东农业大学生命科学学院,泰安,271018 2. 清华大学化学系,原子分子纳米科学教育部重点实验室,北京,100084 3. 中国环境科学研究院,北京,100012 |
| 基金项目： | 中国科学院资助项目;国家科技攻关项目 |
| 摘 要： | 运用自行设计的接口，实现了高效液相色谱与原子吸收光谱的联用。通过对常见砷化合物进行形态分忻，考察了自行设计的高效液相色谱＋紫外在线消解-氢化物发生原子吸收光谱联用（HPLC—UV—HGAAS）接口的性能。实现了将分离后不能直接用于氢化物发生的大分子，通过紫外“在线”消解成小分子砷化合物的目的。确定了仪器的最优化分析条件。建立了快速、直接、连续、在线的HPLC-UV-HGAAS元素形态分析方法。 |
| 关 键 词： | 高效液相色谱 原子吸收光谱 联用技术 元素形态分析 仪器接口 砷 |
| 收稿时间： | 07 21 2004 12:00AM |
| 修稿时间： | 2004-07-212005-07-10 |
High Performance Liquid Chromatography Combined with Atomic Absorption Spectrometry Using Ultraviolet Digestion-Hydride Generation Interface |
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| Liu Hualin,Zhao Rui,Wei Chao,Xing Zhi,Yan Jiren,Zhang Xinrong.High Performance Liquid Chromatography Combined with Atomic Absorption Spectrometry Using Ultraviolet Digestion-Hydride Generation Interface[J].Chinese Journal of Analytical Chemistry,2005,33(11):1522-1526. | |
| Authors: | Liu Hualin Zhao Rui Wei Chao Xing Zhi Yan Jiren Zhang Xinrong |
| Institution: | 1 Department of Chemistry, Key Laboratory for Atomic and Molecular Nanosciences of Education Ministry, Tsinghua University, Beifing 100084; 2 Department of Life Sciences, Shandong Agriculture University, Taian 271018 ; 3 Chinese Research Academy of Environmental Science, Beijing 100012 |
| Abstract: | The coupling of high performance liquid chromatography(HPLC) with atomic absorption spectrometry(AAS) was achieved by using a simple laboratory-built ultraviolet(UV)-hydride generation(HG)(interface).Compared with the former techinque,a 0.4 m quartz tube was used for UV digestion instead of the(5 m) teflon coil without decreasing the UV digestion efficiency of the organic arsenic compounds.As a nesult,the volume of the interface was greatly minished,so the miniaturization and integration of the instrument was(achieved).The coupling instrument was used to separate four arsenic species(arsenite,arsenate,methylarsonic acid,dimethylarsinic acid) that are of toxic importance.The optimized analysis conditions were(obtained).The results showed good repeatability(RSD>6.56%),good linearity(r>0.997) and low detection(detection limit>14.4 mg/L).Then the performance for on-line digestion of organic arsenic species(including) arsenobetaine(AsB) and arsenocholine(AsC) was investigated.A rapid,direct,continuous,on-line HPLC-UV-HGAAS hyphenated technique was developed. |
| Keywords: | High performance liquid chromatography atomic absorption spectrometry hyphenated technique element speciation interface arsenic |
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