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Publication
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| Research Title |
การศึกษาวิธีเพิ่มคุณภาพรอยลายนิ้วมือแฝงเปื้อนโลหิตด้วยสารลดแรงตึงผิว (A STUDY OF WEAK BLOOD FINGERPRINT ENHANCEMENT BY SURFACTANT) |
| Date of Distribution |
28 November 2024 |
| Conference |
| Title of the Conference |
The 18th International Conference on Multi-functional Materials and Applications |
| Organiser |
King Mongkut's Institute of Technology Ladkrabang, Thailand |
| Conference Place |
The Krungsri River Hotel |
| Province/State |
Ayutthaya, Thailand |
| Conference Date |
28 November 2024 |
| To |
30 November 2024 |
| Proceeding Paper |
| Volume |
2024 |
| Issue |
1 |
| Page |
279-289 |
| Editors/edition/publisher |
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| Abstract |
At crime scenes involving fights or assaults, blood and fingerprints are often found, serving as evidence that can reveal the circumstances of the crime and help identify the individuals involved. Blood fingerprints are typically found on weapons, other objects, and throughout the crime scene. However, over time, these fingerprints may fade, and they can also be present on dark-colored surfaces, making them harder to detect. Therefore, methods for detecting blood fingerprints have been studied, with the use of dyes being a common approach. The Police Forensic Science department has adopted Acid Yellow 7 (AY7) for staining blood fingerprints on smooth, non-porous dark surfaces, using fluorescence techniques to assess the quality of the stained blood fingerprints. It was found that AY7 can detect blood fingerprints diluted to a ratio of 1:1,000, while ridge detail is visible at dilutions as high as 1:5,000. Further studies investigated the use of o-phenylenediamine (OPD), a commonly used chemical sensor, as a dye for blood fingerprints. It was found that OPD can reveal ridge details at dilutions as low as 1:10. Additionally, the enhancement of these dyes with surfactants was explored. AY7, when combined with Genapol X-080, could detect blood fingerprints diluted up to 1:10,000, with ridge detail visible at dilutions of up to 1:50,000. OPD, combined with Triton X-100, could detect blood fingerprints at a dilution of 1:10, with ridge detail visible at a dilution of 1:1,000. Therefore, in this study, surfactants were successfully used to enhance the effectiveness of dyes for staining blood fingerprints. |
| Author |
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| Peer Review Status |
มีผู้ประเมินอิสระ |
| Level of Conference |
นานาชาติ |
| Type of Proceeding |
Full paper |
| Type of Presentation |
Poster |
| Part of thesis |
true |
| ใช้สำหรับสำเร็จการศึกษา |
ไม่เป็น |
| Presentation awarding |
false |
| Attach file |
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| Citation |
0
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Journal Publication
ไทย