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DETERMINATION OF COPPER, ZINC, CADMIUM AND LEAD IN WATER USING CO-PRECIPITATION METHOD AND RAMAN SPECTROSCOPY

文献类型： 外文期刊

作者： Liu, Yande 1 ; Shi, Yu 1 ; Cai, Lijun 1 ; Hao, Yong 1 ; Zhao, Chunjiang 3 ;

作者机构： 1.East China Jiaotong Univ, Inst Opt Mech Elect Technol & Applicat OMETA, Nanchang 330013, Peoples R China

2.East China Jiaotong Univ, Sch Mech & Elect Engn, Nanchang 330013, Peoples R China

3.Natl Engn Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China

关键词： Raman spectroscopy; co-precipitation; heavy metals; partial least squares regression

期刊名称：JOURNAL OF INNOVATIVE OPTICAL HEALTH SCIENCES （ 影响因子：1.77； 五年影响因子：1.436 ）

ISSN： 1793-5458

年卷期： 2013 年 6 卷 3 期

页码：

收录情况： SCI

摘要： Mn co-precipitation method combined with Raman spectroscopy were used to determine trace heavy metals (copper, zinc, cadmium and lead) in water sample. Different concentrations of heavy metals including copper, zinc, cadmium and lead in water samples were separated and enriched by Mn2+-phen-SCN- ternary complex co-precipitation procedure. The Raman spectra of co-precipitation sediments were collected using confocal micro-Raman spectrometry. Different preprocessing treatments and regression calibration methods were compared. The best models using partial least squares regression (PLS) of copper, zinc, cadmium and lead were built with a correlation coefficient of prediction (R-p) of 0.979, 0.964, 0.956 and 0.972, respectively, and the root mean square error of prediction (RMSEP) of 6.587, 9.046, 9.998 and 7.751 mu g/kg, respectively. The co-precipitation procedure combined with Raman spectroscopy method are feasible to detect the amount of heavy metals in water.

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