A5-mercaptomethyltetrazole Conjugated Gold Nanoparticle Probe For selectively Detection of Pb2+
- 作者：Dingshuai XueHongyue WangHe LiPeng Peng
- 会议时间：2012-09-01
- 作者单位：Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing
- 母体文献：第八届全国地质与地球化学分析学术报告会暨第二届全国地质与地球化学分析青年论坛论文集
- 会议名称：第八届全国地质与地球化学分析学术报告会暨第二届全国地质与地球化学分析青年论坛
- 会议地点：厦门
- 主办单位：中国地质学会
- 语种：chi
摘要
AuNPs capped with 5-mercaptomethyltetrazole have been prepared which are water-soluble and biocompatible.An assay for the determination of Pb2+ has been proposed based on aggregation fo funcational AuNPs in the presence of Pb2+.With colorimetry,Pb2+ can be detected at a level of 30riM (~7 ppb).Under the optimum conditions,the response is linearly proportional to the concentration of Pb2+ in the range 0.20-5.06 ppm.In addition to high sensitivity,the above sensing systems exhibit good selectivity for Pb2+ over other metal ions.These results demonstrate the facility and effectivity of our functional Au nanoparticles sensor for quantitative Pb2+ analysis.The mechanism of this strategy is also discussed.The assay may become useful in the environment monitoring,water quality inspection and biomedical diagnosis as well.