𝔖 Bobbio Scriptorium
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Application of activation analysis to forensic science—I. Physical evidence

✍ Scribed by L.C. Bate; J.F. Emery; G.W. Leddicotte; W.S. Lyon; M.J. Pro

Publisher
Elsevier Science
Year
1963
Weight
370 KB
Volume
14
Category
Article
ISSN
0020-708X

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Liquid—Solid extraction of lyophilized biological material for forensic analysis : I. Application to urine samples for detection of drugs of abuse
✍ J.R. Broich; D.B. Hoffman; S.J. Goldner; S. Andryauskas; C.J. Umberger 📂 Article 📅 1971 🏛 Elsevier Science 🌐 English ⚖ 404 KB

A new method is described for the detection of drugs of abuse in urine, based on the techniques of lyophilization and liquid-solid extraction. Urine samples are acidified with acetic acid and then freeze-dried. The residues are then estracted and the extracts subjected to thin-layer chromatography