Concept explainers
Most of the raw materials occurring over the earth consist of innumerable elemental impurities. These impurities should be removed through various industrial processing. In some cases, it is not economically feasible to remove such minor impurities completely as they do not show any effect on the quality of the final product.
Answer to Problem 1RQ
Correct answer: The presence of trace elements in materials provides useful “invisible” markers when comparing physical evidence.
Explanation of Solution
Crime investigators use the trace elements as they behave as “invisible markers” that can provide data for comparison or can help in establishing the material source. For example, glass fragments can be used as valuable trace evidence.
Hence, trace elements can provide useful markers for comparing the physical evidence.
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Chapter 14 Solutions
Criminalistics: An Introduction to Forensic Science (12th Edition)
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