Further Studies on Spot Tests and Microcrystal Tests for Identification of Cocaine

Volume 48, Issue 3 (May 2003)

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ISSN: 0022-1198
CODEN: JFSCA
Published Online: 1 May 2003
Page Count: 5

Further Studies on Spot Tests and Microcrystal Tests for Identification of Cocaine
(Received 16 December 2002; accepted 9 December 2002)

Abstract

The presence of cocaine in illicit drug samples is still being determined in some laboratories using spot tests and microcrystal tests. Seventeen chemical species were tested using three different spot tests (Wagner, Marquis, and cobalt thiocyanate followed by stannous chloride reactions) and two microcrystal tests (gold chloride and platinic chloride) to determine whether the results could be differentiated from the results of these tests on cocaine. The data obtained indicated that nine of the 17 compounds gave results similar to those from cocaine using the three spot tests, but that the results from microcrystal testing allowed for differentiation of all nine compounds from cocaine.

Keywords:
forensic science, criminalistics, spot tests, microcrystal tests, cocaine

Paper ID: JFS2002149
DOI: 10.1520/JFS2002149
ASTM International is a member of CrossRef.

Author Title Further Studies on Spot Tests and Microcrystal Tests for Identification of Cocaine Symposium , 0000-00-00 Committee E30

		SEDL / Journals / Journal of Forensic Sciences (JOFS) / Citation Page Volume 48, Issue 3 (May 2003) Click here to download this paper now for $25 PDF (264K) View License Agreement ISSN: 0022-1198 CODEN: JFSCA Published Online: 1 May 2003 Page Count: 5 Further Studies on Spot Tests and Microcrystal Tests for Identification of Cocaine (Received 16 December 2002; accepted 9 December 2002) Abstract The presence of cocaine in illicit drug samples is still being determined in some laboratories using spot tests and microcrystal tests. Seventeen chemical species were tested using three different spot tests (Wagner, Marquis, and cobalt thiocyanate followed by stannous chloride reactions) and two microcrystal tests (gold chloride and platinic chloride) to determine whether the results could be differentiated from the results of these tests on cocaine. The data obtained indicated that nine of the 17 compounds gave results similar to those from cocaine using the three spot tests, but that the results from microcrystal testing allowed for differentiation of all nine compounds from cocaine. Keywords: forensic science, criminalistics, spot tests, microcrystal tests, cocaine Paper ID: JFS2002149 DOI: 10.1520/JFS2002149 ASTM International is a member of CrossRef. Author Title Further Studies on Spot Tests and Microcrystal Tests for Identification of Cocaine Symposium , 0000-00-00 Committee E30