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2000-2002 S&T e-Digest Contents


Vol. 37, Issue 11,  November 2003, pp. 24-29




Nano Zinc Ferrite Acetic Acid Gas Sensors for Smuggled Drug Detection in Southern China


Zheng Jiao*, Minghong Wu, Zheng Qin, Jianzhong Gu, Minghua Lu


Shanghai Applied Radiation Institute, Shanghai University, Shanghai 201800, P.R.China

*Author to whom correspondence should be addressed. E-mail: jiaozheng@yahoo.com



Received: 28 October 2003   /Accepted: 18 November 2003   /Published: 22 November 2003


Abstract: Drug abuse has been a big problem for China and the world. The detection of drugs became of great importance. In this paper, by analysis the characteristics of suppressed heroin drugs, it was found that most smuggled drugs in southern China is not pure heroin, but hydrochloric heroin. The hydrochloric heroin is easy to hydrolyze and release acetic acid. This result means that smuggled drugs can be indirectly detected by detecting volatilized acetic acid with gas sensor. In this paper the adulterated nano ZnFe2O4 gas sensors were used to detect acetic acid in low concentration. It was found that Ce and La adulterated ZnFe2O4 gas sensors have good sensitivity and selectivity to acetic acid, can be used in drug detection.


Keywords: Drug, Heroin, Acetic acid, Gas sensor


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