期刊文献+

Mn^(2+)-Dipy-SCN^-共沉淀分离—拉曼光谱法测定水中镉的研究

Research on fast determination of heavy metal Cd using the Mn^(2+)-Dipy-SCN^-co-precipitation separation and Raman spectroscopy
下载PDF
导出
摘要 人体饮用水的同时会摄入水中的重金属。使用拉曼光谱技术,并采用Mn2+-Dipy(2-2’联吡啶)-SCN-共沉淀分离的方法,能检测水中重金属镉。根据对比不同光谱数据预处理方法,并结合偏最小二乘法建立定量模型。实验结果为,光谱信息经过二阶微分处理后的建模效果较理想,其外部验证相关系数为0.915 6,预测均方根误差为0.011 9。采用HM—5000P重金属分析仪测定共沉淀前后重金属镉离子的含量,发现Mn2+-Dipy-SCN-络合体系对水中镉离子的回收率超过90%,最高可达99.781%。实验表明,Mn2+-Dipy-SCN-三元络合物共沉淀体系对重金属镉有很好的分离效果,Mn2+-Dipy-SCN-共沉淀分离拉曼光谱法用于重金属镉的检测具有可行性。 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 Mn^2+-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 Mn^2+-Dipy-SCN^-co-precipitation separation,and observed that recovery rate of Cd2+range from 90%to 99.781%.The experiment shows that the Mn^2+-Dipy-SCN^-ternary complex co-precipitation systems have good concentration effects for Cd2+,the fast determination of Heavy Metal Cd using the Mn^2+-Dipy-SCN^-co-precipitation separation and Raman spectroscopy is feasible.
出处 《中国农机化学报》 2016年第7期187-190,共4页 Journal of Chinese Agricultural Mechanization
基金 国家自然科学基金项目(61178036)
关键词 Mn^2+-Dipy-SCN^- 拉曼光谱 共沉淀 DIPY 偏最小二乘法 Mn^2+-Dipy-SCN^- Raman spectroscopy Cd^2+ co-precipitation separation PLS
  • 相关文献

参考文献14

  • 1孙铁晰,周启星,李培军.污染生态学[M].北京:科学出版社,2001:127-142.
  • 2徐小清,邓冠强,惠嘉玉,张晓华,丘昌强.长江三峡库区江段沉积物的重金属污染特征[J].水生生物学报,1999,23(1):1-9. 被引量:54
  • 3朱一民,沈岩柏,魏德洲.海藻酸钠吸附铜离子的研究[J].东北大学学报(自然科学版),2003,24(6):589-592. 被引量:34
  • 4杨丙雨,冯玉怀.中国古代的火试金法[J].贵金属,2009,30(1):59-62. 被引量:15
  • 5Gross M, brand J P, Luguet A. Analysis of platinum group elements and gold in geological material using NIS fire assay and Te coprecipitation.. The NIS dissolution step revisited E J2. Chemical Geology, 2002, 185(3): 179190.
  • 6Gomez M B, Gomez M M, Palacios M A. ICP MS determi- nation of Pt, Pd and Rh in airborne and road dust after tel- lurium co precipitation [J]. Journal of Analytical AtomicSpectrometry, 2003, 18(1): 8083.
  • 7Jin X D, Zhu H P. Determination of platinum group ele ments and gold in geological samples with ICP-MS using asodium peroxide fusion and tellurium co-precipitation [J]. Journal of Analytical Atomic Spectrometry, 2001, 15 (6): 747751.
  • 8Lokhande T N, Anuse M A, Chavan M B, et al. Extrac- tion and separation studies of platinum (IV) with N-n-octy- laniline [J]. Talanta, 1998, 47(4): 823832.
  • 9高锦章,郭效军,王碧,范海燕,彭波,康敬万,赵苏.高温熔融固液萃取在分离与富集中的应用[J].稀有金属,1999,23(4):304-310. 被引量:8
  • 10Makishima A, Nakanishi M, ration method of ruthenium, Nakamura E. A group sepa palladium, rhenium, osmi urn, iridium and platinum using their broom complexes and an anion exchange resin [J]. Analytical Chemistry, 2001, 73(21): 134-136.

二级参考文献87

共引文献144

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部