光谱学与光谱分析 |
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Methodology Improvement in Background Elimination in Plant Cd Measurement by Graphite Furnace Atom Absorption |
YU Hua, FENG Wen-qiang, QIN Yu-sheng, CHEN Qing-rui, ZENG Xiang-zhong, TU Shi-hua* |
Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China |
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Abstract A problem of higher background value and lower measured Cd value exists when Cd is digested by conventional dry digestion method, measured by graphite furnace atomic absorption, and calculated with peak height numeration. This problem results in difficulty for evaluating samples with Cd contents in the neighborhood of critical values. In order to solve the problem, the present paper focused on background measurement with graphite furnace atomic absorption, modified the pre-preparation procedures of the traditional method, and screened the optimal concentration of the modifier. Results showed that addition of Mg(NO3)2 as a modifier into the samples before incineration was preferred. It could not only yield a clear solution but also reduce its background by ten times, considerably eliminating background interference. In addition, using 3% HNO3 in stead of 1 mol·L-1 HCl as dilution for the incinerated sample could eliminate the background. The improved methods could acquire a zero concentration of measurement for the blank, re-correct the values measured by graphite furnace atomic absorption and obtain more reliable results.
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Received: 2008-08-20
Accepted: 2008-11-18
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Corresponding Authors:
TU Shi-hua
E-mail: stu@ipni.net
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[1] LI Yan, MA Zong-qi, WANG Xing-an(李 燕,马宗琪,王兴安). Modern Agricultural Science and Technology(现代农业科技), 2008, (2): 112. [2] YANG Xiao-yan, QUAN Chang-chun, XUE Qiu-wang, et al(杨晓艳,全常春,薛秋旺,等). Chinese Journal Spectroscopy Laboratory(光谱实验室), 2007, 24(6): 1002. [3] BAO Shi-dan(鲍士旦). Soil Agrochemical Analysis(土壤农化分析). Beijing: China Agriculture Press((北京: 中国农业出版社), 1999. 371. [4] XIAO Xue-bin, HE Xue-chao, XIONG Sheng-wei, et al(肖学彬,何学超,熊升伟,等). Grain Storage(粮食储藏), 2007, 36(4): 46. [5] LI Yan-qun(李燕群). Metallurgical Analysis(冶金分析), 2008, 28(6): 33. [6] YAO Chao-ying, REN Lan(姚朝英,任 兰). Chemical Analysis and Meterage(化学分析计量), 2007, 16(1): 11. [7] HUANG Wei, NI Xiao-ying(黄 卫,倪小英). Grain Technology and Economy Analytical(粮食科技与经济), 2007, 32(5): 46. [8] JU Ji-hong(巨积红). Gansu Farming(甘肃农业), 2006, (7): 238. [9] HU Xiao-bin, HAN Zhi-ping, WANG Chen-yi(胡晓斌,韩志萍,王趁义). Journal of Analytical Science(分析科学学报), 2008, 24(1): 94. [10] HUANG Xiao-hong, WEI Yong(黄小红,卫 勇). Environment Science and Management(环境科学与管理), 2007, 32(5): 144. [11] ZHOU Yong-yi, ZHANG Li-juan, GU Xue-xin, et al(周勇义,张丽娟,谷学新,等). Modern Instrument(现代仪器), 2004, 10(3): 27. [12] XU Ying-jiang, LIU Yong-ming, ZHANG Xiu-zhen, et al(徐英江,刘永明,张秀珍,等). Marine Sciences(海洋科学), 2007, 31(3): 9. |
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