6-6 Detection and Identification of Drugs; Summary.pdf
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Illegal drugs
How to detect and identify illegal drugs?
Presumptive chemical tests
Treating with chemical reagents
Observe color changes
1
Detection & Identification
1
Marquis Test
Red-purple
Orange-brown
Heroin
Amphetamines
2
Detection & Identification
1
Marquis Test
2
Scott Test for cocaine
Cobalt thiocyanate turns blue
3
Detection & Identification
1
Marquis Test
2
Scott Test
Chromatography
Spectroscopy
4
3
4
Thin Layer Chromatography
Not very precise
Presumptive test
TLC
5
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