| 表面活性剂增敏催化光度法测定痕量亚硝酸根 |
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| 引用本文： | 赖晓绮,薛珺,胡跃华.表面活性剂增敏催化光度法测定痕量亚硝酸根[J].赣南师范学院学报,2002(3):51-54. |
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| 作者姓名： | 赖晓绮 薛珺 胡跃华 |
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| 作者单位： | 赣南师范学院,化学系,江西,赣州,341000 |
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| 摘 要： | 基于在稀硫酸介质中溴代十六烷基吡啶 (CPB)对亚硝酸根 (NO-2 )催化溴酸钾氧化碘曙红褪色反应的增敏作用 ,建立了测定NO-2 的表面活性剂增敏催化动力学光度法 .由于加入增敏剂 ,灵敏度显著提同 .lgA0 /A值与NO-2 含量在 0～ 1.0 μg/mL范围内存在线性关系 ,检出限量为0 .0 6 μg/ml.方法用于水样、蔬菜中痕量亚硝酸根的测定 ,结果较好
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| 关 键 词： | 催化光度法 溴代十六烷基吡啶(CPB) 碘曙红 亚硝酸根 |
| 文章编号： | 1004-8332(2002)03-0051-04 |
| 修稿时间： | 2001年6月22日 |
New Catalytic Kinetic Photometry Determination of Trace Nitrite |
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| LAI Xiao qi,XUE Jun,HU Yue hua.New Catalytic Kinetic Photometry Determination of Trace Nitrite[J].Journal of Gannan Teachers' College(Social Science(2)),2002(3):51-54. |
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| Authors: | LAI Xiao qi XUE Jun HU Yue hua |
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| Abstract: | A catalytic kinetic photometic method for the determination of nitrite with surfactant sensitizer has been developed.The method is based on the catalysis of NO - 2 to the discloring reaction of Ideosin oxidized by potassium bromate in the solution of dilute H 2SO 4 When CPB was used as a sensitizerof the reaction,the seasitivity is greatly increased.There was linear relationshop of 1g(A 0/A)with NO - 2 in the range 0～1.0μg/mL.the detection limit was 0.06μg/mL.The method was used in the determination of trace in water and vegetable samples with satisfactory results. |
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| Keywords: | catalytic kinetic photometry CPB Ideosin |
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