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Screening of soil evidence by a combination of simple techniques: validity of particle size distribution

Screening of soil evidence by a combination of simple techniques: validity of particle size distribution,10.1016/S0379-0738(01)00490-X,Forensic Scienc

Screening of soil evidence by a combination of simple techniques: validity of particle size distribution   (Citations: 23)
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The validity of the determination of particle size distribution for forensic soil identification was studied using 73 soil samples collected from a 20km×15km area. Soil particles were first divided into two fractions by wet sieving with a sieve with a 0.05mm aperture size. Dry sieving was used to analyze the coarse particle fraction and a particle size analyzer was used for the fine particle fraction. The number of particle size classes measured by sieving could be reduced to three, <0.05, 0.05–0.2, and 0.2–2mm, which enabled 87.9% of the soil samples to be discriminated. Measurements made with the particle size analyzer on the fine particle fraction increased the discriminating power to 95.9%. The use of particle size analysis by sieving in combination with color examination allowed us to discriminate 99.5% of the soil samples, even when particle size analysis of the fine particle fraction was not carried out.
Journal: Forensic Science International - FORENSIC SCI INT , vol. 122, no. 2, pp. 155-158, 2001
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