Thiol-rich polyhedral oligomeric silsesquioxane-modified magnetic nanoparticles for the highly efficient separation and preconcentration of Cd(II) and Pb(II) in food and water prior to ICP-OES determination
Thiol-rich polyhedral oligomeric silsesquioxane-modified magnetic nanoparticles for the highly efficient separation and preconcentration of Cd(II) and Pb(II) in food and water prior to ICP-OES determination
复制标题
富含硫醇的多面体低聚倍半硅氧烷改性磁性纳米粒子，用于在 ICP-OES 测定之前高效分离和富集食品和水中的 Cd(II) 和 Pb(II)
DOI：
10.1039/c8ja00223a
复制
发表时间：
2018-10
影响因子：
3.4
通讯作者：
Hu Qiuhui
中科院分区：
文献类型：
--
作者：
Li Peng;Wang Jing;Pei Fei;Liu Qin;Fang Yong;Hu Qiuhui
建立了富硫醇多面体低聚倍半硅氧烷修饰磁性纳米粒子(Fe3O4@SiO_2/POSS-SH)分离和预富集食品和水样中Cd(II)和Pb(II)的新方法。用扫描电子显微镜、能量色散X射线能谱和振动样品磁镜对所制备的磁性吸附剂进行了表征。镉(II)和铅(II)在1.0mol L−_1HNO_3溶液中淋洗后，用电感耦合等离子体发射光谱仪测定。详细考察了pH、淋洗液、进样量、接触时间、共存离子等分析参数对分析结果的影响。镉和铅的检出限分别为0.08和0.12μg L−1，富集系数为100。通过两个标准物质的验证，成功地用于大米、蘑菇、猪肉、苹果汁、瓶装水和自来水中Cd(II)和Pd(II)的测定，回收率满意。
A new protocol for the separation and preconcentration of Cd(II) and Pb(II) in some food and water samples was developed using thiol-rich polyhedral oligomeric silsesquioxane-modified magnetic nanoparticles (Fe3O4@SiO2/POSS-SH). The as-prepared magnetic adsorbent was characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy and vibrating sample magnetoscopy. Cd(II) and Pb(II) were measured by ICP-OES after elution with 1 mL 1.0 mol L−1 HNO3. The influences of the analytical parameters including pH, eluent, sample volume, contact time and co-existing ions have been investigated in detail. The limits of detection were found to be 0.08 and 0.12 μg L−1 for Cd and Pb, respectively, with an enrichment factor of 100. The proposed method was validated by two certified reference materials and applied successfully for the determination of Cd(II) and Pb(II) in rice, mushroom, pork, apple juice, bottled water and tap water with satisfied recoveries.
登录
查看更多内容
富集与分离技术在原子荧光光谱分析中的应用
影响因子：
6.1
作者：
Deng, Dongyan;Zheng, Chengbin;Hou, Xi;eng;Wu, Lan
通讯作者：
Wu, Lan
影响因子：
7.4
作者：
C. Zheng;Li-gang Hu;X. Hou;B. He;G. Jiang
通讯作者：
C. Zheng;Li-gang Hu;X. Hou;B. He;G. Jiang
影响因子：
6.2
作者：
Yan Li;Yan-Feng Huang;Yan Jiang;Bo-lin Tian;Fei Han;Xiu‐Ping Yan
通讯作者：
Yan Li;Yan-Feng Huang;Yan Jiang;Bo-lin Tian;Fei Han;Xiu‐Ping Yan
DOI：
10.1016/j.chroma.2013.11.052
发表时间：
2014-01
期刊：
Journal of chromatography. A
影响因子：
--
作者：
Jing Yang;Jia-yuan Li;Jun-qin Qiao;H. Lian;Hongyuan Chen
通讯作者：
Jing Yang;Jia-yuan Li;Jun-qin Qiao;H. Lian;Hongyuan Chen
影响因子：
7.4
作者：
Yun-Wan Jia;Huimin Yu;Li Wu;X. Hou;Lu Yang;C. Zheng
通讯作者：
Yun-Wan Jia;Huimin Yu;Li Wu;X. Hou;Lu Yang;C. Zheng