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2003 Issue 04 (Total No. )
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The Origin Differentiation of Seized Heroin Us-ing GC-C-IRMS II--Study on the ~(13)C Isotope RatioMass Spectrometry of Seized Heroin WANG Conghui;SUN Wei;ZHANG Daming;TIANYuhang;FANG Jiajun;WANG Jingzhu;WUMountian;ZHU Shaotang (. Institute of Fo-rensic Science;Ministry of Public Security)[ 2003(04): 19-22.  Abstract ( )   The origin of seized heroin was dif-ferentiated using gas chromatography-combustion-isotope ratio mass spectrometry (GC-C-IRMS).Considering the contribution of acetyl toδ13C ofheroin, purified heroin should be hydrolyzed tonative morphine correspondingly. According to themeasured δ13C value of heroin and morphine, theseized heroin was classified and differentiated,and the difference of δ13C between heroin andmorphine was concerned in the batch informationof the synthetic process. The precision of GC-C-IRMS method and the influence of experimentalconditions and parameters on the precision werealso discussed.[ Related Articles | Metrics

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GHB and Its Related Products LIU Wei;SHEN Min;MA Dong (Institute of Forensic Sciences;Ministry of Justice;Shanghai 000) 2003(04): 23-26.  Abstract ( )   GHB and its related products are becomingpopular recreational drugs. As a result of its strong sedative andamnesiac effects, GHB has been implicated in a number of DFSAcases. The natural presence of GHB in the human body and itsrapid elimination after ingestion make it difficult to detect and toevaluate its roles in suspected GHB-facilitated assaults. The pa-per reviews GHB about its physical and chemical properties,synthesis, abuse, endogenous GHB, pharmacology,pharmacodynamics, clinical applications, poison and death, us-age in DFSA cases, analytical methods, etc.[ Related Articles | Metrics

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A Conceptual Comparison of Handwriting Examination between Chinese and Western Fo-rensic Document Experts-A Case Study of Signature Identification JIA Xiao-guang (Guangdong Public Security College;Guangzhou0) 2003(04): 27-29.  Abstract ( )   The paper is a preliminary study on the contrastingconcepts between Chinese and western experts on handwritingidentification. A case of signature identification was presented,and the difference of the understanding of handwriting compari-son between Chinese and western experts was discussed. Related Articles | Metrics

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Analysis of 191 Cases of Forensic PsychiatricExamination Involving Crimes of Violence AOYANG Jun-lin (Quanzhou No. Hospital;Quanzhou;000) 2003(04): 30-32.  Abstract ( )   Objective to study the relationship between typesof violence crimes and different mental disorders. Method 191cases involving crimes of violence from 1997 to 2002 wereanalyzed. Result most violence of mental patients ended up withhomicide or body injury. They, when committing Crimes, lackedof prediction, identification, planning and self-protection, andtended to choose relatives and acquaintances as targets. Conclu-sion understanding the regular patterns and characteristics ofcrimes committed by the insane and sane is the basis factor todistinguish offending groups.[ Related Articles | Metrics