光谱学与光谱分析 |
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Kinetic Spectrophotometric Determination of Iodate in Iodized Salt Samples |
WANG Yong,NI Yong-nian* |
Department of Chemistry,Nanchang University,Nanchang 330047,China |
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Abstract A kinetic spectrophotometric method for the determination of iodate based on consecutive reactions was proposed. The method was based on the kinetic process of the analytes which react with starch-iodide in the presence of sodium chloride in sulfuric acid medium. It was found that the intermediate triiodide ion was produced in the consecutive reactions and the three peak wavelengths, 291, 354 and 585 nm, were obtained in the whole reaction process. And then the three peak wavelengths were chosen as the optimization conditions. In the reaction time of 180 s, the obtained linear calibration concentration ranges at the three peak wavelengths under the optimized conditions were 0.1-1.2, 0.05-1.2 and 0.1-1.2 μg·mL-1, respectively, and the detection limits were 0.047, 0.027 and 0.048 μg·mL-1, respectively. As there were the widest linear range and the lowest detection limit at the peak wavelength 354 nm, the wavelength was chosen for the quantitive ananlysis of iodate. At the same time, the method was successfully applied to the determination of iodate in iodized salt samples.
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Received: 2007-01-18
Accepted: 2007-04-22
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Corresponding Authors:
NI Yong-nian
E-mail: ynni@ncu.edu.cn
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[1] ZHU Pei-xun, YANG Li-xin, WU Yu(朱佩, 杨立新, 吴 玉). Guangzhou Food Science and Technology(广州食品工业科技), 2003, 19(4): 85. [2] WU Xue-liang, TU Jie(武学亮, 屠 洁). Journal of China Pharmaceutical University(中国药科大学学报), 1995, 26(1): 27. [3] GAO Jia-you(高甲友). Metallurgical Analysis(冶金分析), 2003, 23(3): 38. [4] GAO Jia-you(高甲友). Physical Testing and Chemical Analysis-Part B: Chemical Analysis(理化检验-化学分册), 2004, 40(6): 349. [5] WEN Jun, MIAO Hong, WANG Xian-jun(文 君, 缪 红, 王鲜俊). Chinese Journal of Health Laboratory Technology(中国卫生检验杂志), 2005, 15(6): 759. [6] Rubinson K A, Rubinson J F. Contemporary Instrumental Analysis. Britain: Pearson Education Press, 2003. 789. [7] TIAN Yi-ling, CHEN Guan-hua, CUI Tong(田益玲,陈冠华,崔 同). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2005, 25(4): 617. [8] GUO Liang-qia, LIN Xu-cong, XIE Zeng-hong, et al(郭良洽,林旭聪,谢增鸿,等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2005, 25(10): 1662. [9] NI Yong-nian, QI Zheng-bao(倪永年,齐正保). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2006, 26(7): 1364.
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