Soil analysis in crime scene by X-ray diffraction for biomedical engineering

Soil occurs naturally from physical and chemical alteration of rock and mineral including organic matter. Soil has unique characteristic and different properties depending on climate, topography, parental material, living creature and duration of soil formation. Moreover, soil is a part of the land which we used for transportation, agriculture and location of residential places. So, soil can get involved in daily life of every people. Thus, soil can be used as the physical evidence in criminal case. Soil can transfer from the crime scene to the suspect. Therefore, when dry soil was found on the clothes, shoes or tyres, it could be compared soil with crime scene that might relate to the suspect. Any how the clothes, shoes or tyres, they could be compared soil with crime scene that might relate to the suspect. This study aimed to determine heavy metals in the soil by X-ray diffraction technique to create standard curve is used to compare soil in crime scene. The soil samples were collected from various locations each region of Thailand, the area is densely populated and crime often.