光谱学与光谱分析 |
|
|
|
|
|
Determination of Iodine and Iodate in Brine and Seafood Simultaneously by Ultraviolet Absorption Spectrometry |
TAN Jun, ZHU Xia-ping*, LIU Miao-miao, WEI Zhi-cheng, SANG Shi-hua |
College of Materials and Chemistry & Chemical Engineering, Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions, Chengdu University of Technology, Chengdu 610059, China |
|
|
Abstract The iodide in samples was oxidized to iodate by bromine water, which could be removed by formic acid, and iodate could be transformed to I-3 with excess of I- in phosphoric acid, the iodate in samples could be transformed directly to I-3 with excess of I- in phosphoric acid. The I-3 solution had strong absorption at 350 and 288 nm,and the absorbance had a linear relationship to the concentration of I-3 in a certain range. Total content of iodide and iodate had been detected after samples were oxidized by bromine water and the content of iodate had been detected directly, and the content of iodide was obtained by difference of the two results. Based on this, the method had been established to detect iodide and iodate in brine and seafood simultaneously by ultraviolet absorption spectrometry. The volumes of bromine water, formic acid, phosphoric acid and potassium iodide had been optimized. The effect of illumination, temperature and time also had been discussed. The optional reagents condition for iodide was: 2 drops of 3% bromine water, 0.5 mL of 10% formic acid, 4 mL of 20% phosphoric acid and 1 mL of 100 g·L-1 KI. The optional reagents condition for iodate was: 0.2 mL of 20% phosphoric acid and 1 mL of 100 g·L-1 KI. The absorbance were determined after reacting for 30 min at room temperature and natural light conditions. Under the optimized conditions, the concentration of iodide and iodate in the range of 0~1.2 and 0~1.5 mg·L-1 were well agreed with Lambert Beer law. The sample blank was detected for twelve times and the detection limit of iodide and iodate were 1.54 and 14.8 μg·L-1 respectively. The RSD of twelve times determination of 0.8 mg·L-1 of iodide and iodate were 0.097% and 0.067%, respectively. The iodide and iodate in Zhabuye brine, Hong Feng underground brine, kelp, seaweed and sea cabbage had been detected, the recovery experiments also had been conducted at the same time, the recovery of iodide and iodate were between 80%~120%. All the results met the requirement of analytical chemistry.
|
Received: 2014-04-04
Accepted: 2014-07-25
|
|
Corresponding Authors:
ZHU Xia-ping
E-mail: zhuxiaping@cdut.edu.cn
|
|
[1] WEI Lin-heng, NIU Qian, DONG Xue-zhi, et al(魏林恒, 牛 谦, 董学芝, 等). Physical Testing and Chemical Analysis Part B (Chemical Analysis),(理化检验-化学分册), 2004, 40(07): 423. [2] Zhu Yongchun, Cao Lu, Hao Jie, et al. Microchim Acta, 2010,170: 121. [3] MO Shu-min, LIANG Li-na CAI Ya-qi,et al(墨淑敏 ,梁立娜, 蔡亚岐, 等). Rock and Mineral Analysis(岩矿测试),2006,25(2): 122. [4] Zheng Jian. Journal of Microchemical,2012,100: 42. [5] Phillip C Shelor, Purnendu K Dasgupta. Analytica Chimica Acta, 2011, 702: 16. [6] YAN Tao, LI Yan, WANG Shu-ping, et al(阎 涛, 李 严, 王书平, 等). Journal of Jinnan University,(Sci & Tech)(济南大学学报·自然科学版),2005, 19(01): 41. [7] XU Shu-qing, ZHU Wen-ping(许淑青, 朱文萍). Environmental Monitoring Management and Technology(环境监测管理与技术),2010,22(01): 52. [8] HAN Chang-xiu,FENG Shang-cai(韩长秀, 冯尚彩). Physical Testing and Chemical Analysis Part B (Chemical Analysis), (理化检验-化学分册),2004, 40(07): 384. [9] ZHOU Jian-yong, LUO Li-jun, HE Jian-li(周坚勇, 罗力军, 何建丽). Physical Testing and Chemical Analysis Part B (Chemical Analysis), (理化检验-化学分册), 1997, 33(06): 251. [10] WEI Dan-yi, LIU Shao-pu, HU Xiao-li(魏丹毅, 刘绍璞, 胡小莉). Physical Testing and Chemical Analysis Part B (Chemical Analysis), (理化检验-化学分册), 2001, 37(11): 505. [11] WEI Yong-ju, LIU Cui-ge, MO Li-ping, et al(魏永巨, 刘翠格, 默丽萍, 等). Chinese Journal of Analytical Chemistry(分析化学), 2003, 31(1): 120. [12] CHEN Shou-chun(陈寿椿). Important Inorganic Chemical Reactions(重要的无机化学反应). Shanghai: Shanghai Science and Technology Press(上海:上海科学技术出版社), 1982. [13] ZHANG Hui-fang, LIU Hai-ning, GUO Min, et al(张慧芳, 刘海宁, 郭 敏,等). Journal of Analytical Science(分析科学学报),2011, 27(2): 238.
|
[1] |
LI Xin1, SU Cheng-zhi1,2*, YU Dan-yang1, SHENG Yu-bo1, CHANG Chuan1, SHI Lei1, JIANG Ji-guang1. Study on the Influence of Wavelength and Low Temperature on COD Detection by Ultraviolet Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(08): 2403-2408. |
[2] |
LI Ling1, 2, 3, NAI Xue-ying1, 2*, CHAI Xiao-li1, 2, 3, LIU Xin1, 2, GAO Dan-dan1, 2, DONG Ya-ping1, 2. Optimization of Determination Method of Lithium in Oil-Field Water Based on DOE[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(08): 2617-2621. |
[3] |
CHEN Zhu-ling, LIN Min-xiu, SONG Zhi-ping, GUO Liang-qia*, CHEN Yi-ping. Study of Direct Fluorescence Quenching of Graphitic Carbon Nitride for the Detection of Iodine Ions[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(07): 2029-2033. |
[4] |
LIU Xiao, YANG Xiao-tao, ZHAN Xiu-chun*, YUAN Ji-hai, FAN Xing-tao, JIAO Ju . Solution Cathode Glow Discharge Based on Charge Coupled Device Detector[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(03): 971-977. |
[5] |
YAN Kun1, 2, WANG Ping1, LIU Yun2*, DONG Yuan-hua2 . Study on Molecular Recognition of Cucurbit[6]uril with Oxytetracycline Molecules by Spectroscopic Methods[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(02): 641-645. |
[6] |
WANG Xin-tao, CHEN Yong*, ZHOU Yao-qi, HE Chuan . Micro-Raman Spectroscopy of Daughter Minerals in Primary Fluid Inclusions of Rock Salt in Dongying Sag and Their Geological Significances[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(09): 2827-2834. |
[7] |
GAO Wen-hui1,2, LIU Bo1,2, LI Xing-feng1,2, HAN Jun-hua1,2, JIA Ying-min1,2* . Study on the Choice of Functional Monomer before Preparation of Myclobutanil Molecularly Imprinted Polymer[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(03): 791-794. |
[8] |
JIANG Huan, ZHU Yan-wu*, WANG Yan, HE Jian-bo . Study of Interaction of Umbelliferone with Three Aromatic Amino Acids by Fluorescence Spectroscopy [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(08): 2117-2122. |
[9] |
LI Qian-qian1, WU Li-jun1, LIU Wei1, CAO Jin-li2, DUAN Jia1, HUANG Yue1, MIN Shun-geng1* . UV Spectroscopy Coupled with Partial Least Squares to Determine the Enantiomeric Composition in Chiral Drugs[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(02): 500-504. |
[10] |
LI Qian-qian, ZHU Ye-wei, XIONG Yan-mei, DUAN Jia, WU Li-jun, LI Chun-zi, MIN Shun-geng* . Fast Determination of the Proportion of Metalaxyl-M Enantiomers by UV Spectroscopy [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(12): 3395-3398. |
[11] |
Lü Juan, WANG Gong-ke, ZHANG Gui-sheng, LIU Qing-feng, LU Yan* . Study on the Interaction between DNR-D3(Daunorubicin Derivative)and ctDNA by Spectroscopic Methods [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(05): 1324-1328. |
[12] |
LI Lai-sheng,GE Xiao-hui,HUANG Zhi-bing,LI Yan-ping. Study on the Molecular Recognition of Perhydroxycucurbit[6]uril with Methyl Orange by Spectroscopic Methods [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(07): 1393-1397. |
[13] |
ZHANG An-ping1, LUO Fan1, LIU Wei-ping2* . Study on Supramolecular Complexes of Cyclodextrins and Fenoxaprop-p-Ethyl by UV Spectra [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(12): 2298-2301. |
[14] |
CHU Hai-hong, QI Ying-ying, XU Yang, HUANG Bing-qiang, TU Yi-feng*. Determination of I- by the ECL of Luminol in Neutral Medium[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(05): 675-677. |
[15] |
WEI Yong-ju, LIU Cui-ge, MO Li-ping . Ultraviolet Absorption Spectra of Iodine, Iodide Ion and Triiodide Ion [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(01): 86-88. |
|
|
|
|