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《Chinese Journal of Analysis Laboratory》 2009-02
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Determination of calciun in silicon iron by discoloring spectrophotometry with Picramine CA

ZHONG Guo-xiu1,2, HUANG Qing-hua3 and YANG Hao-yi1,2 (1. Hubei Reserch & Designing Institute of Mechanical Electronic Engineering, Wuhan 430070; 2. Hubei University of Technology, Wuhan 430070; 3. Hubei Reserch & Designing Institute of Building Material, Wuhan 430071)  
A sensitive spectrophotometric method was developed to determine calcium, based on the discoloring reaction of calcium-Picramine CA system in pH 11.0 NH3·H2O-NH4Cl medium and linear relationship of the discoloring degree with the certain concentration range of calcium. The factors such as absorption spectra、 acidity、 concentrations of reagent、 influence of coexisting ions on the reaction are discussed, and the optimal reaction conditions are established. Beer′s law was obeyed in the range of 8~90 μg/25 mL for calcium with an apparent molar absorptivity of 1.26×104 L·mol-1·cm-1. The proposed method has been applied to the determination of calcium in silicon iron. The RSDs (n=5) are between 1.4% and 2.1%.
【CateGory Index】: TG115.3
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 LI Jing-mei,WANG Yuan,WANG Wei,SHEN Zhao-ying,ZHAI Qing-zhou~*(Research Center for Nanotechnology,Changchun University of Science and Technology,Changchun 130022,China);Spectrophotometric determination of calcium with tribromoarsenazo[J];Metallurgical Analysis;2004-05
2 ZENG Hai-mei(Kunming Iron & Steel Group Ltd.,Kunming,Yunnan 650302,China);Determination of Mn,P,Al,Ca,Cr,Ni and Cu in Ferrosilicon[J];Yunnan Metallurgy;2004-05
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 LI Xiaodong,ZHAI Qingzhou (Research Center for Nanotechnology,Changchun University of Science and Technology,Changchun 130022);Preparation and Characterization of (MCM-41)-(Arsenano-Ⅲ) Nanocomposite Materials[J];Journal of Changchun University of Science and Technology(Natural Science Edition);2009-02
2 ZHU Xiu-hua,ZHANG Cheng,DING Ke,SHA Yu(Department of Applied Chemistry of Northwestern Polytechnical University,Xi'an 710072,China);Chromogenic System Between A New Heterocyclic Triazene Reagent and Nickel[J];Urban Environment & Urban Ecology;2007-01
3 CHANG Shike , TANG Jiahua Department of Chemistry, Chaohu College, Chaohu 238000;The Develoment of the New Application of Presme in Photometric Analysis[J];Journal of Chaohu College;2005-03
4 ZHANG Dong,SONG En-jun(School of Enviromental and Chemical Engineering,Shenyang Ligong University,Shenyang 110168,China);Determination of Silver in Silver Plating Bath by Inhibitory Kinetic Spectrophotometry[J];Plating & Finishing;2006-01
5 ZHU Jian-fang~,YU Xie-yu(College of technology and science Chongqing,Chongqing(400050);Studies on simultaneous determination of RE elements in steels with dibromo-p-methye-methylsulfonazo by double-wavelength spectrophotometry[J];Chinese Journal of Analysis Laboratory;2006-02
6 LIU Jun-kang LING Wei HU Hong-qi BAI Hua LI Zai-jun (College of Chemical and Materials Engineering,Jiangnan University,Wuxi 214122),;Simultaneous determination of trace amounts of Cd(Ⅱ) and Ni(Ⅱ) using radial basis network and spectrophotometry with a novel chromogenic reagent[J];Chinese Journal of Analysis Laboratory;2009-01
7 CHEN Shi-jie,CHEN Zhi-chun,LI Ying-jie(School of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006,China);Study on spectrophotometric determination of ferrum with phenylfluorone in thepresence of β -CD and OP[J];Journal of Science of Teachers' College and University;2006-03
8 ZHANG Dong,SU Hui-dong,GAO Hong School of Environmental and Chemical Engineering,Shenyang Ligong University,Shenyang 110168,China;Study on the Adsorption Capability of Barium-Strontium Titanate Powder Coated with Dithizone for Cadmium Ion in Water[J];Spectroscopy and Spectral Analysis;2008-03
9 LIU Xi-lin ,NIU Yu-zhuo,WANG Bin(School of Science and Engineering,Gansu Lianhe University, Lanzhou 730000,China);A Study and Application of the Colour Reaction of Palladium(Ⅱ) with DBM Chlorphosphonazo[J];Journal of Gansu Education College(Natural Science Edition);2005-01
10 KOU Min-ze,LIU Ni,ZHUANG Shan-xue,KOU Zong-yan(School of Chemical Engineering,Gansu Lianhe University,Lanzhou 730000,China);Discoloring Spectrophotomeric Deterination of Platinum(Ⅳ) by Platinum(Ⅳ)-Potassium Bromate-Dipromocarboxyarsenazo[J];Journal of Gansu Lianhe University(Natural Science Edition);2008-01
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