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New Blood Analyzer Tells Human from Animal Samples on the Spot


Scientific American
The system could someday provide fast results at a crime scene
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A sleepy driver on a dark road hears a loud “thump!” and later finds a speck of blood on the front bumper. Or police spot a tiny but suspicious bloodstain at a crime scene. Quickly determining whether such traces come from humans or animals is crucial, but the necessary tests can be time-consuming and may destroy valuable evidence. Researchers say a new technique could help.
To develop a rapid, nondestructive way to identify human blood, State University of New York at Albany forensic chemists Igor Lednev and Ewelina Mistek-Morabito combined spectroscopy and statistics. They shined infrared light on dried samples of human blood and on those of 10 animal species, including common pets such as dogs, cats and ferrets, as well as deer and elk (both of which are often struck by vehicles). The researchers recorded the reflected light, the spectrum of which changes based o ....

New York , United States , Ewelina Mistek Morabito , Igor Lednev , Peter Massey , University Of New York At Albany , York State Police Crime Laboratory System , University Of South Florida , Communications Chemistry , University Of Central Florida , State University , South Florida , Matthieu Baudelet , Central Florida , புதியது யார்க் , ஒன்றுபட்டது மாநிலங்களில் , பீட்டர் மஸ்ஸி , பல்கலைக்கழகம் ஆஃப் புதியது யார்க் இல் அல்பானி , யார்க் நிலை போலீஸ் குற்றம் ஆய்வகம் அமைப்பு , பல்கலைக்கழகம் ஆஃப் தெற்கு புளோரிடா , தகவல்தொடர்புகள் வேதியியல் , பல்கலைக்கழகம் ஆஃப் மைய புளோரிடா , நிலை பல்கலைக்கழகம் , தெற்கு புளோரிடா , மைய புளோரிடா ,

New Technique Quickly Tells Human Blood from Animal Blood