Application of GIXF to forensic samples

Glazing incidence X-ray fluorescence analysis (GIXF) has been applied to forensic samples, a counterfeit 100 dollars bill, fragments of polyvinyl tapes, a trace of semen, illegal drugs, fingerprints and fake V.S.O.P cognacs. Sr could not be detected on the magnet-respondent letter of the counterfeit bill and Br was detected on the magnet-nonrespondent part of the counterfeit bill, while such phenomena could not be noticed on a true bill. Zn as a characteristic ingredient could be detected in a trace of semen. Br was detected in what is called pure methamphetamine crystals and K, Ca, Fe, Zn etc. were detected in heroin powders. Pb was sharply detected in gunshot residues attached on the finger after gun-firing. Sulphur as a contaminant was abundant in fake V.S.O.P cognacs against no S being detected in genuine V.S.O.P cognacs. (author)