| 原位合成纳米金/石墨烯修饰玻碳电极检测水和土壤中痕量铅 |
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| 引用本文： | 李杜娟,徐枫,樊凯,厉力华,苏畅,刘红英,姚睿,曹佳斐,魏凯华,李小平,赵新颜. 原位合成纳米金/石墨烯修饰玻碳电极检测水和土壤中痕量铅[J]. 农业工程学报, 2018, 34(11): 203-208 |
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| 作者姓名： | 李杜娟 徐枫 樊凯 厉力华 苏畅 刘红英 姚睿 曹佳斐 魏凯华 李小平 赵新颜 |
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| 作者单位： | 杭州电子科技大学生命信息与仪器工程学院;浙江大学医学院附属儿童医院 |
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| 基金项目： | 浙江省自然科学基金(LY15H200003，LQ16C200007，LGF18C010003，LGF18H180005，2017C37020)；国家自然科学基金（31201367，31501557） |
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| 摘 要： | 为提高痕量铅的检测精度,提出了一种简单、可控的一步还原法在裸玻碳电极表面原位合成纳米金/石墨烯材料的方法,并通过循环伏安法(cyclic voltammetry,CV)对修饰电极进行电化学表征。利用修饰后的电极对醋酸-醋酸钠缓冲溶液中的铅离子(Pb(Ⅱ))标准样品进行检测,并对检测条件进行了优化。优化条件下的试验结果表明,在pH值为4.5的醋酸-醋酸钠缓冲溶液中,Pb(Ⅱ)的溶出峰为-0.08 V,在1～90μg/L范围内Pb(Ⅱ)的溶出峰电流与Pb(Ⅱ)浓度之间呈现良好的线性关系(R~2=0.985),最小检测下限为0.27μg/L。在优化后的条件下采用该电极测定了实际水样与土壤中的Pb(Ⅱ)含量,加标回收率区间分别为93.75%～109.20%和93.82%～109.9%,相对标准偏差均小于7%,可以用于对实际水样与土壤样本的检测。
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| 关 键 词： | 重金属；土壤；水；铅离子检测；石墨烯；纳米金；电极 |
| 收稿时间： | 2018-01-25 |
| 修稿时间： | 2018-04-25 |
In-suit synthesis of graphene/gold nanoparticles modified glassy carbon electrode for detection of lead in water and soil |
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| Li Dujuan,Xu Feng,Fan Kai,Li Lihu,Su Chang,Liu Hongying,Yao Rui,Cao Jiafei,Wei Kaihu,Li Xiaoping and Zhao Xinyan. In-suit synthesis of graphene/gold nanoparticles modified glassy carbon electrode for detection of lead in water and soil[J]. Transactions of the Chinese Society of Agricultural Engineering, 2018, 34(11): 203-208 |
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| Authors: | Li Dujuan Xu Feng Fan Kai Li Lihu Su Chang Liu Hongying Yao Rui Cao Jiafei Wei Kaihu Li Xiaoping Zhao Xinyan |
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| Affiliation: | 1.College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou 310018, China;,1.College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou 310018, China;,1.College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou 310018, China;,1.College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou 310018, China;,2. The Children''s Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China,1.College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou 310018, China;,1.College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou 310018, China;,1.College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou 310018, China;,1.College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou 310018, China;,1.College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou 310018, China; and 1.College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou 310018, China; |
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| Abstract: | |
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| Keywords: | heavy metals soils water detection of lead ion(II) graphene gold nanoparticles electrode |
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