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《Journal of Chinese Agricultural Mechanization》 2016-07
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Research on fast determination of heavy metal Cd using the Mn~(2+)-Dipy-SCN~-co-precipitation separation and Raman spectroscopy

Liu Yande;Zhang Yuxiang;Jiang Lixia;East China Jiaotong University Institute of Mechanical and Institute of Optics-Mechanics-Electronics Technology and Application;  
The important way that heavy metal enters the human body is drinking water.The heavy metal enters the body is another important way for drinking water.For fast determination of Cd,the Mn2+-Dipy-SCN-co-precipitation separation is used,combined with confocal microscope Raman spectroscopy.Different preprocessing methods were compared,combined with partial least squares(PLS),and the quantitative model was established.The result showed that the best model was obtained by PLS with the preprocessing method of second-order differential,external validation correlation coefficient(r)and root mean square error of prediction(RMSEP)was 0.915 6and 0.011 9.The HM—5000Pheavy metals analyzer was used to determine the content of Cd before and after the Mn2+-Dipy-SCN-co-precipitation separation,and observed that recovery rate of Cd2+range from 90%to 99.781%.The experiment shows that the Mn2+-Dipy-SCN-ternary complex co-precipitation systems have good concentration effects for Cd2+,the fast determination of Heavy Metal Cd using the Mn2+-Dipy-SCN-co-precipitation separation and Raman spectroscopy is feasible.
【Fund】: 国家自然科学基金项目(61178036)
【CateGory Index】: X832;O657.37
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