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引用本文:   李伟涛, 李轶坤, 杨婷, 陈明丽, 王建华. 谷胱甘肽功能化有序介孔碳用于选择性分离富集痕量镉. 分析化学, 2018, 46(4): 530-536. doi:  10.11895/j.issn.0253-3820.171465 [复制]

Citation:   LI Wei-Tao, LI Yi-Kun, YANG Ting, CHEN Ming-Li, WANG Jian-Hua. Glutathione Modified Ordered Mesoporous Carbon for Separation and Preconcentration of Trace Cadmium. Chinese Journal of Analytical Chemistry, 2018, 46(4): 530-536. doi: 10.11895/j.issn.0253-3820.171465 [复制]

谷胱甘肽功能化有序介孔碳用于选择性分离富集痕量镉

通讯作者:  陈明丽, chenml@mail.neu.edu.cn; 王建华, jianhuajrz@mail.neu.edu.cn

收稿日期: 2017-11-30

接受日期: 2018-01-26

出版日期: 2018-04-01

基金项目: 本文系国家自然科学基金项目(Nos.21727811,21675019,21375013,21405010)资助

Glutathione Modified Ordered Mesoporous Carbon for Separation and Preconcentration of Trace Cadmium

Corresponding author:  CHEN Ming-Li, chenml@mail.neu.edu.cn; WANG Jian-Hua, jianhuajrz@mail.neu.edu.cn

Received Date:  2017-11-30

Accepted Date:  2018-01-26

Published Date:  2018-04-01

Fund Project:  This work was supported by the National Natural Science Foundation of China (Nos.21727811, 21675019, 21375013, 21405010)

将谷胱甘肽修饰到有序介孔碳表面,制备了一种谷胱甘肽功能化的有序介孔碳(GSH-CMK-3),采用傅里叶红外光谱、扫描电镜、热重分析等对其进行了表征。GSH-CMK-3具有优良的化学稳定性和热稳定性,对Cd2+具有较强的吸附性能,静态吸附容量为87.87 mg/g,吸附动力学符合准二级动力学模型。在顺序注射微填充柱分离富集体系中,以0.006 mol/L硫脲(溶于0.2 mol/L HNO3)为洗脱剂,洗脱效率为96%。在最佳实验条件下,进样体积为1000 μL,洗脱体积为50 μL时,富集倍数为17.3,以石墨炉原子吸收为检测器,建立了痕量Cd2+的分离富集分析方法,测定Cd2+的线性范围为0.05~0.20 μg/L,精密度为2.9%(n=13,100 ng/L),检出限为1.9 ng/L(n=7,3σ),对标准物质GBW08608(水中镉、铬、铜、镍、铅、锌成分分析标准物质)中的痕量Cd2+的分析结果与标示值无明显差异。

关键词:   有序介孔碳, 谷胱甘肽, 分离富集, , 石墨炉原子吸收
Key words:   Ordered mesoporous carbon, Glutathione, Separation and preconcentration, Cadmium, Graphite furnace atomic absorption spectrometry
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谷胱甘肽功能化有序介孔碳用于选择性分离富集痕量镉

李伟涛, 李轶坤, 杨婷, 陈明丽, 王建华

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