Application Introduction of Non-Destructive Analysis System for Multi-Layer Structure and Elemental Composition (X-ray Fluorescence Spectrometer) in Criminal Investigation Technology and Forensic Identification
The Non-Destructive Analysis System for Multi-Layer Structure and Elemental Composition (X-ray Fluorescence Spectrometer) is a standard analytical instrument in the fields of criminal investigation technology and forensic identification. Based on the principle of X-ray fluorescence spectroscopy, it can realize rapid qualitative and quantitative analysis of trace to major elements in solid materials, as well as detection of multi-layer coating structure and thickness, with the whole process being non-destructive and without the need for standard sample comparison. It provides scientific basis for the identification, traceability and identical identification of physical evidence components, solves the pain points of difficult trace physical evidence inspection and easy damage to samples, and helps promote forensic identification accurately and efficiently.
The core functions of the equipment are accurately adapted to the needs of criminal investigation and forensic identification, providing strong support for identification work: wide-range simultaneous multi-element detection, covering most elements from sulfur to uranium, meeting the identification needs of major, minor and trace elements in various physical evidence; precise analysis of multi-layer composite structures, with nanometer-level thickness measurement suitable for coating physical evidence inspection; intelligent analysis mode without standard samples, suitable for the detection of special trace physical evidence; high-precision micro-area positioning capability, which can accurately detect tiny samples, combined with triple safety protection, complying with laboratory specifications and ensuring inspection safety and data reliability.
Combined with criminal investigation practical cases, its application value is prominent: Case 1, in a gun-related case, investigators used this equipment to quickly detect gunshot residues on the suspect’s hands and clothes, accurately identifying characteristic elements such as lead, antimony and barium, providing key clues for the identification of the suspect’s gun-related behavior in forensic identification. Case 2, trace metal chips and paint fragments were extracted from the theft crime scene. Through elemental composition analysis, the equipment compared the metal chips with the stolen cable material and the paint fragments with the coating of the suspected tool, establishing a physical evidence association, and providing core technical support for the identification of the involved tool and the conviction of the suspect in forensic identification.
In summary, this equipment is widely used in scenarios such as forged document identification, trace metal physical evidence inspection and special material identification. It can realize document traceability, gunshot residue screening, coating physical evidence comparison, etc., non-destructively protect the integrity of samples, enrich identification dimensions, standardize the inspection process, provide objective and scientific technical data for forensic identification, and improve the rigor and authority of identification conclusions. It is an indispensable professional analytical equipment in the fields of criminal investigation technology and forensic identification.