Determination of Trace Lead in Traditional Chinese Herbal Medicine Astragalus by Microwave Digestion-CTAB Enhancing-Continual Flow Ingection Hydride Generation-ICP-AES
LIU Dong-lian1,2,KE Shao-ying1,YE Rong2,DING Ming-yu3
1. Department of Chemistry, Tangshan Teachers College, Tangshan 063000, China 2. Faculty of Geosciences, China University of Geosciences, Beijing 100083, China 3. Department of Chemistry, Tsinghua University, Beijing 100084, China
Abstract：A new method using microwave digestion technique was developed for the determination of lead in Astragalus by CTAB enhancing-continual flow hydride generation-inductively coupled plasma atomic emission spectrometry(HG-ICP-AES). The experimental conditions of microwave digestion and hydride generation were optimized. This method shows a linear range of 0.23-800 μg·L-1and the correlation coefficient is 0.999 9. It is satisfactory to apply the microwave digestion procedure to the determination of Pb under the optimized conditions. The detection limit of the method is 0.23 μg·L-1 and the RSD is 1.02%. The recovery obtained is 98.8%-100.1%. The results show that this method is rapid and simple with low environmental contamination and complete digestion of samples.
刘冬莲1,2,客绍英1,叶荣2,丁明玉3 . 微波消解-CTAB增敏-HG-ICP-AES法测定中药黄芪中的痕量铅[J]. 光谱学与光谱分析, 2007, 27(11): 2337-2340.
LIU Dong-lian1,2,KE Shao-ying1,YE Rong2,DING Ming-yu3. Determination of Trace Lead in Traditional Chinese Herbal Medicine Astragalus by Microwave Digestion-CTAB Enhancing-Continual Flow Ingection Hydride Generation-ICP-AES. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(11): 2337-2340.
[1] LIU Qing, WANG Zi-jian, TANG Hong-xiao(刘 清, 王子健, 汤鸿宵). Environmental Science(环境科学), 1996, 17(1): 89. [2] FAN Hua-jun, LI Wei-bo(范华均，黎蔚波). Physical Testing and Chemical Analysis(Chemical Analysis)(理化检验-化学分册)，2005，41(9)：639. [3] SHI Yu-ping, WANG Yong-ning, LI Ji-dong(石玉平，王永宁，李继东). Chemical Reagents(化学试剂)，2005，27(10)：601. [4] XIAO Tian-mei, XI Hai-shan, YANG Xian-li, et al(肖田梅，席海山，杨宪立，等). Chinese Journal of Spectroscopy Laboratory(光谱实验室)，2005，22(4)：865. [5] WENG Di, ZHAI Guo-qing(翁 棣，翟国庆). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2005，25(4)：567. [6] XU Fang, GAO Liang-cai, CHEN Wan-rong, et al(徐 芳, 高良才, 陈婉荣, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2003，23(6)：1163. [7] YANG Yuan, ZHAN Bin-zong, GAO Ling, et al(杨 元, 詹斌宗, 高 玲, 等). Physical Testing and Chemical Analysis(Chemical Analysis)(理化检验·化学分册)，2000，36(9)：404. [8] CHEN Jian-guo, ZHU Li-hui, DU Xuan-wen(陈建国，朱丽辉，杜选文). Physical Testing and Chemical Analysis Part B Chemical Analysis(理化检验-化学分册)，2005，41(2)：109. [9] MENG Jun, XIE Jian-xin, DENG Bi-yang, et al(孟 君，谢建新，邓必阳，等). Journal of Guangxi Normal Nniversity·Natural Science(广西师范大学学报·自然科学版)，2005，23(2)：71. [10] XU Li-min, LUO Wei(徐理民，罗 炜). Journal of Beijing Institute of Petrochemical Technology(北京石油化工学院学报)，2005，13(1)：45. [11] SONG Wu-yuan, ZHENG Jian-guo, LI Yan(宋武元，郑建国，李 岩). Chinese Journal of Analytical Chemistry(分析化学)，2005，33(3)：338. [12] Fernández de la Campa M R, Garcia Ortiz C, Diaz Garcia M E, et al. Conferenc Presentation, Ⅻ National Congress of Spectroscopy, Barcelona(Spain), 1990. [13] Valdés-Heviay Temprano M C, Aizpún Fernández B, Fernández de la Campa M R, et al. Anal. Chim. Acta, 1993, 283(1): 175. [14] ZHANG Xue-jun, ZHANG Sheng-bang(张学俊, 张胜帮). Chinese Journal of Analytical Chemistry(分析化学)，2001，29(6)：739. [15] YANG Yi, HOU Xiang-yan, WANG Shu-jun, et al(杨 屹, 侯翔燕, 王书俊, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2004，24(12)：1672. [16] YI Xin-ping, LIU Jian-ping, LI Ge(易新萍, 刘建平, 李 革). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2004, 24(7): 890. [17] ZHANG Pei-yu, HU Zhi-yong(张佩瑜, 胡志勇). Chinese Journal of Analytical Chemistry(分析化学), 1987, 15(5): 404. [18] ZHAI Yu-xiu, HAO Lin-hua(翟毓秀, 郝林华). Chinese Journal of Analytical Chemistry(分析化学), 2000, 28(2): 176. [19] Thompson M, Pahlavnpour B, Waltons J, et al. Analyst, 1978, 103(5): 705
