| 同步镀铋膜差分脉冲伏安法测试土壤中铬 |
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| 引用本文： | 刘成伦,陈林,杨玉娥,刘正实,杨琦.同步镀铋膜差分脉冲伏安法测试土壤中铬[J].光谱实验室,2010,27(2):517-519. |
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| 作者姓名： | 刘成伦 陈林 杨玉娥 刘正实 杨琦 |
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| 作者单位： | 1. 重庆大学西南资源开发及环境灾害控制工程教育部重点实验室,重庆市沙坪坝区沙正街174号,400030;重庆大学化学化工学院,重庆市沙坪坝区沙正街174号,400030
2. 重庆大学化学化工学院,重庆市沙坪坝区沙正街174号,400030 |
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| 基金项目： | 重庆市科委自然科学基金资助项目(编号:CSTC,2007BB0200);;重庆大学“211工程”三期创新人才培养计划项目(编号:S-09103) |
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| 摘 要： | 采用同步镀铋膜法修饰玻碳电极及差分脉冲溶出伏安法测试土壤中Cr。在优化的实验条件下,以KNO3为支持电解质,NaAc-HAc(pH=5.5)为缓冲溶液的铋膜上得到Cr溶出特征峰电位为-1.14V,线性方程为:I=0.0747C+0.31054,相关系数为0.9981,检出限为0.001μg/L,线性范围为0.01—60μg/L,RSD=2.47%,该方法简单快速,准确度和精密度均符合要求,回收率为96.7%—104.5%。
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| 关 键 词： | 同步镀铋膜电极 铬 差分脉冲溶出伏安法 土壤 |
Determination of Chromium in the Soil with Differential Pulse Voltammetry and Synchronous Plating Bismuth Electrode |
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| Liu Cheng-Lun,Chen Lin,Yang Yu-E,Liu Zheng-Shi,Yang Qi.Determination of Chromium in the Soil with Differential Pulse Voltammetry and Synchronous Plating Bismuth Electrode[J].Chinese Journal of Spectroscopy Laboratory,2010,27(2):517-519. |
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| Authors: | Liu Cheng-Lun Chen Lin Yang Yu-E Liu Zheng-Shi Yang Qi |
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| Institution: | Key Laboratory for the Exploitation of Southwest Resources and Environmental Disaster Control Engineering of Ministry of Education;Chongqing 400030;P.R.China;College of Chemistry and Chemical Engineering;Chongqing University;P.R.China |
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| Abstract: | Bismuth film modified glassy carbon electrode was prepared for the determination and chemical speciation analysis of a trace level of Cr in soil by differential pulse stripping voltammetry(DPSV).The sensitive stripping peaks of the ions were obtained and compared with that obtained using bismuth film electrodes in KNO3 supporting electrolyte and NaAc-HAc(pH=5.5) buffer solutions.The adsorptive stripping peaks potential of Cr is characteristic at-1.14V under the best condition.The linear equation is the foll... |
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| Keywords: | Synchronous Plating Bismuth Film Electrode Chromium Differential Pulse Stripping Voltammetry Soil |
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