01673nam a2200169   4500001000700000100004100007101000800048200015200056311016900208330093100377461006001308606003201368606002901400606002701429606002701456606002001483377980  a20210322u           y0pory50      ba  aeng  aSurvey of gunshot residue prevalence on the hands of individuals from various population groups in and outside EuropefAmalia Stamoulia ...[et al.]  aParticipantes do estudo: Amalia Stamoulia, Ludwig Niewöhner, Magnus Larsson, Bertrand Colson, Steffen Uhligd, Lubor Fojtasek, Fatima Machado, Lawrence Gunaratnam.  a1.Introduction. 2. Data and materials. 2.1. Sampling. 2.2. Information related to sampled persons. 2.3. Analysing stubs with SEM/EDS. 2.4. Data check and harmonisation. 2.5. Statistical evaluation. 2.6. Laboratory effects and differences between subgroups. 2.7. Participating forensic laboratories. 3. Results. 3.1. Notation. 3.2. Descriptive statistical analysis. 4. Inferential statistical analysis 4.1. Identification of outliers. 4.2. Laboratory effects and differences between subgroups. 4.3. Applying the subgroup effect model to the low and high-risk groups. 4.4. Influence of relationship to firearms. 4.5. Influence of handling a firearm within 5 h prior to sampling. 5. Discussion 5.1. Car mechanics. 5.2. Presence of PbBaSb particles on people with and without a relationship with firearms. 5.3. Presence of PbBaSb particles in police population. 5.4. Handling a firearm. 5.5. Variability of results. 6.Conclusions.  dMay 2021vVol. 23tForensic Chemistryx2468-1709p8 p.   aARMA DE FOGO E MUNIÇÕES  aANÁLISE DE VESTÍGIOS  aPOLÍCIA CIENTÍFICA  aANÁLISE LABORATORIAL  aESTUDO DE CASOS