[1]薛秀玲,樊国峰,陈虹丽,等.浊点萃取-分光光度法测定水中痕量镍[J].华侨大学学报(自然科学版),2008,29(4):571-574.[doi:10.11830/ISSN.1000-5013.2008.04.0571]
　XUE Xiu-ling,FAN Guo-feng,CHEN Hong-li,et al.Determination of Trace Nickel in Water by UV-Visible Spectrophotometry after Cloud Point Extraction[J].Journal of Huaqiao University(Natural Science),2008,29(4):571-574.[doi:10.11830/ISSN.1000-5013.2008.04.0571]
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浊点萃取-分光光度法测定水中痕量镍()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第29卷
期数:
2008年第4期
页码:
571-574
栏目:
出版日期:
2008-10-20

文章信息/Info

Title:
Determination of Trace Nickel in Water by UV-Visible Spectrophotometry after Cloud Point Extraction
文章编号:
1000-5013(2008)04-0571-04
作者:
薛秀玲; 樊国峰; 陈虹丽; 蔡韵
华侨大学材料科学与工程学院; 华侨大学环境保护设计研究所
Author(s):
XUE Xiu-ling1;  FAN Guo-feng2;  CHEN Hong-li1;  CAI Yun1
1.College of Materials Science and Engineering, Huaqiao University; 2.Environmental Protection & Design Institute, Huaqiao University, Quanzhou 362021, China
关键词:
浊点萃取;  镍;  混合表面活性剂;  分光光度法
Keywords:
cloud point extraction;  nickel;  mixed surfactants;  ultraviolet-visible spectrophotometry
分类号:
O657.3
DOI:
10.11830/ISSN.1000-5013.2008.04.0571
文献标志码:
A
摘要:
采用十二烷基磺酸钠(SDS)和Triton X-100的混合表面活性剂,以1-(2-吡啶偶氮)-2-萘酚(PAN)为络合剂,加入电解质NaCl溶液,通过紫外-可见分光光度法测定水中痕量镍.在室温下,考察影响浊点萃取、分离和富集金属离子镍的影响因素及适宜的反应条件.结果表明,在饱和NaCl的加入量为5.5 mL,体积分数为0.1%的PAN加入量为0.125 mL,SDS和Triton X-100的摩尔比在0.38~1.39时,所形成的体系对Ni2+-PAN络合物具有较好的萃取效果.最佳条件下,方法的线性范围为0.1~1.0 mg.L-1,相关系数R2=0.999 8,检测限为18.9μg.L-1,镍的加标回收率达97%~99%,相对标准偏差为2%~4%.
Abstract:
Cloud point extraction with Triton X-100 and sodium dodecyl sulfate(SDS) as mixed surfactants,1-(2-pyridylazo)-2-naphthol(PAN) as chelating reagent and NaCl electrolyte for pre-concentrating trace levels of nickel,which as a prior step to its spectrophotometric determination has been studied in this paper.The parameters affecting the separation phase and detection process were investigated,and the optimal conditions at room temperature were followed: 5.5 mL of saturated NaCl,0.125 mL of 0.1% PAN,the ratio of SDS and Triton X-100 were between 0.38 and 1.39.Under the optimum experimental conditions,calibration curve was linear in the range of 0.1~1.0 mg·L-1 with R2=0.999 8,and the detection limits is 18.9 μg·L-1.The spiked recovery of nickel were 97%~99%.The relative standard deviation(RSD,n=4) was in the range of 2%~4%.

参考文献/References:

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备注/Memo

备注/Memo:
福建省青年人才创新基金资助项目(2005J029); 国务院侨办科研基金资助项目(05QJR05); 华侨大学高层次引进人才科研启动项目(05BS304)
更新日期/Last Update: 2014-03-23