镍(Ⅱ)-1-(2-吡啶偶氮)-2-萘酚-十二烷基苯磺酸钠体系共振光散射法测定痕量镍
Resonance Scattering Spectrometric Determination of Trace Amounts of Nickel by Its Reaction with PAN Sensitized with SDBS
摘 要
在pH 8.0的Tris-盐酸缓冲介质中,利用十二烷基苯磺酸钠(SDBS)增敏镍(Ⅱ)和1-(2-吡啶偶氮)-2-萘酚(PAN)形成离子缔合物体系,使体系共振光散射增强.体系最大散射波长545 nm,在15~500 μg·L-1范围内共振散射增强强度(ΔI)与镍(Ⅱ)质量浓度呈线性关系.检出限(3S/N)为4.57 μg·L-1,分别对50,200,400 μg·L-1镍(Ⅱ)标准溶液进行11次平行测定,测定值的相对标准偏差(n=6)依次为3.5%,3.0%,1.7%.据此提出了一种简单而快速的测定镍的方法.应用于测定水样中镍量,测得其平均回收率为98.5%.
镍(Ⅱ)
1-(2-吡啶偶氮)-2-萘酚
十二烷基苯磺酸钠
水样
Resonance scattering spectrometry
Nickel(Ⅱ)
1-(2-Pyridylazo)-2-naphthol
Sodium dodecylbenzene sulfonate
Water sample
Abstract
Intensity of resonance scattering of the reaction between Ni(Ⅱ) and 1-(2-pyridylazo)-2-naphthol (PAN),in a Tris-HCl buffer medium of pH 8.0,was sensitized by sodium dodecylbenzene Sulfonate (SDBS),and the magnitude of increase in resonance rayleigh scattering intensity (ΔI) was found keeping linear relationship with the concentration of Ni(Ⅱ) ion in the range from 15-500 μg·L-1 when measured at 545 nm (the maximum scattering wavelength of the reaction system).Detection limit (3S/N) of the method was found to be 4.57 μg·L-1.Precision was tested at 3 concentration levels of 50,200,400 μg·L-1 of Ni(Ⅱ) for 11 determinations,values of RSD′s (n=6) found were 3.5%,3.0% and 1.7% respectively.Based on these facts,a simple and rapid method for determination of nickel was proposed.In its application to analysis of water samples for their nickel contents,value of average recovery found was 98.5%.
中图分类号 O657.32
所属栏目 工作简报
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收稿日期 2008/8/6
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备注钱纯(1971-),女,湖南常德人,主管检验师,主要从事医学检验及卫生检验工作.
引用该论文: QIAN Chun. Resonance Scattering Spectrometric Determination of Trace Amounts of Nickel by Its Reaction with PAN Sensitized with SDBS[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2009, 45(4): 431～433
钱纯. 镍(Ⅱ)-1-(2-吡啶偶氮)-2-萘酚-十二烷基苯磺酸钠体系共振光散射法测定痕量镍[J]. 理化检验－化学分册, 2009, 45(4): 431～433
被引情况:
【1】叶秀金,李俊健,宋粉云, "共振散射光谱法测定卡波姆",理化检验－化学分册 51, 1286-1289(2015)
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【5】张金生,李丽华.微波消解试样-火焰原子吸收光谱法测定原油和渣油中铁、镍和铜[J].理化检验-化学分册,2007,43(12):1065-1067．
【6】柳玉英,周丽.催化动力学分光光度法测定痕量镍[J].分析化学,2004,32(2):267．
【7】夏畅斌,黄念东,王红军,等.催化动力学光度法测定合金中的镍[J].光谱学与光谱分析,2004,24(11):1484-1485．
【8】何虹,诸爱士.分光光度法测定混合液中Co(Ⅱ)、Ni(Ⅱ)含量分析[J].中国测试技术,2007,33(6):19-21．
【9】申明金.模糊聚类2偏最小二乘算法应用于分光光度法同时测定铁、镍、钒、铜、钴[J].理化检验-化学分册,2007,43(1):37-39．
【10】刘永文,宋金萍,孟双明,等.三波长分光光度法同时测定痕量镉镍[J].冶金分析,2006,26(6):14-16．
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