Q:- Why soil is considered as an Evidence? Ans:- Forensic soil scientists consider soil as any earth material that has been collected accidentally or on purpose and is related to the problem they are investigating. Though the technology isnβt perfect, soil forensics is considered as an important wing during investigations. Soil in includes rock, minerals, vegetation, glass, paint, asphalt, etc. The presence of these objects in that area helps to make that area of soil unique from other areas.
Q:- What quantity of soil sample is required ? Ans:- In most forensics cases, only about one cup of the top layer of soil needs to be collected.
Q:- How analysis should be performed? Ans:- Samples are dried before testing, to prevent further decomposition of the material in the soil. π At the crime lab, the forensic soil scientist conducts chemical and physical analysis tests and compares the soil samples from the crime scene location with the soil sample found on the suspect or on his or her belongings. π Another test for soil is ground-penetrating radar technology (GPR). Scientist use radar energy pulses to look for breaks in the soilβs structure. GPR helps detect anomalies in the soil, where radar energy is sent back to the receiving antennae. But the drawback- it is not always accurate, especially with heavy clay soils. In the end, with the use of soil forensics and GPR technology, scientists and investigators can make connections between differences in the soil and collected evidence. By identifying by the individual characteristics of soil, investigators can use this knowledge to help solve crimes.
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