FSC239Y5 Study Guide - Midterm Guide: Gunshot Residue, Rubber Glove, Forensic Pathology

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31 Mar 2016
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An analyical technique which sorts ions based on their weight. Gas chromatography: the various elements of a compound become separated into their disinct parts in order to chemically analyse them. Paper chromatography: used to separate coloured chemicals or substances, replaced by thin layer chromatography. Simple devices intended to detect the presence or absence of a target sample within a bigger sample. Spectroscopy that deals with the infrared spectrum, mostly based on absorpion spectroscopy. This is useful because all chemicals vibrate at a characterisic frequency, and this can be sued to idenify the molecule. Twirl, allow the powder to loat down into the impression. Using the granular powder, and puf it into the impression. Needs to be completely coated for suicient enhancement. Then coninue with dental stone (does not give insulaion value), snow print wax (gives beter enhancement), or sulfur. Wait an hour: explain the dental stone method. Powder impression irst, mix dental stone powder with water.

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