科研之友
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摘要
Lead poisoning is a serious environmental concern,which is a health threat.Existing technologies always have some drawbacks,which restrict their application ranges,such as real time monitoring.To solve this problem,glutathione was functionalized on the Au-coated gate area of the pseudomorphic high electron mobility transistor(pHEMT) to detect trace amounts of Pb2+.The positive charge of lead ions will cause a positive potential on the Au gate of the pHEMT sensor,which will increase the current between the source and the drain.The response range for Pb2+ detection has been determined in the concentrations from 0.1 pmol/L to 10 pmol/L.To our knowledge,this is currently the best result for detecting lead ions.
- 出版日期2016-11
