| 微波消解-微分电位溶出法测定淡水鱼中镉含量 |
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| 引用本文： | 滕晓焕,章建军.微波消解-微分电位溶出法测定淡水鱼中镉含量[J].广东轻工职业技术学院学报,2011(4):17-19. |
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| 作者姓名： | 滕晓焕 章建军 |
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| 作者单位： | [1]广东轻工职业技术学院,广东广州510300 [2]河南省食品质量安全控制工程技术研究中心,河南郑州450002 |
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| 摘 要： | 为镉的检测寻求一种快速、简便的新方法。通过玻碳悬汞电极测定淡水鱼中镉含量,考查了电沉积电位、电沉积时间、平衡电位、平衡时间对测定结果的影响。结果：当pH值为1.0～2.5、电沉积电位为-1.25V、电沉积时间为60s、平衡电位为-1.0V、平衡时间为30s时,测定结果最好。测定镉的线性范围为0～16ng,检出限为0.24ng/mL,回收率为98.6%～101.2%,相对标准偏差为2.4%。该法操作快速、简便,结果准确、可靠。
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| 关 键 词： | 微波消解 微分电位溶出法 淡水鱼 镉 |
Determination on Cadmium in Freshwater Fish by Microwave Digestion-Differential Potentiometric Stripping Analysis |
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| Teng Xiaohuan,Zhang Jianjun.Determination on Cadmium in Freshwater Fish by Microwave Digestion-Differential Potentiometric Stripping Analysis[J].Journal of Guangdong Industry Technical College,2011(4):17-19. |
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| Authors: | Teng Xiaohuan Zhang Jianjun |
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| Institution: | 1 Guangdong Industry Technical college,Guangzhou 510300,China; 2 The engineering research center of food quality and safety control of HeNan Province,Zhengzhou 450002,China) |
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| Abstract: | The aim of the study was to seek a quick,simple and new method for the detection of cadmium.Study electrodeposition potential、electrodeposition time、equilibrium potential and equilibrium time that how to effect results through determining freshwater fish cadmium content by glassy carbon mercury membrane electrode electron.Results： When pH was 1.0～2.5;the electrodeposition potential was-1.25V;electrodeposition time was 60s;equilibrium potential was-1.0V;equilibrium time was 30s,the determination result was best.The linear range was at 0～16ng,the detection limit was 0.24ng/mL;the recovery was 98.6%～101.2%;the relative standard deviation was 2.4%.This method is rapid,simple,accurate and reliable. |
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| Keywords: | microwave digestion differential potentiometric stripping analysis freshwater fish Cadmium |
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