Featured Research

from universities, journals, and other organizations

Real-life CSI: What can investigators really tell from gunshot residue?

Date:
March 26, 2014
Source:
American Chemical Society
Summary:
The popular TV series CSI is fiction, but every day, real-life investigators and forensic scientists collect and analyze evidence to determine what happened at crime scenes. Scientists say they have developed a more rapid and accurate method that could allow crime scene investigators to tell what kind of ammunition was shot from a gun based on the residue it left behind.

The popular TV series "CSI" is fiction, but every day, real-life investigators and forensic scientists collect and analyze evidence to determine what happened at crime scenes. In a study published in the ACS journal Analytical Chemistry, scientists say they have developed a more rapid and accurate method that could allow crime scene investigators to tell what kind of ammunition was shot from a gun based on the residue it left behind.

Related Articles


Igor K. Lednev and Justin Bueno point out that when someone fires a gun, burnt particles from the bullet spray out of the weapon onto a shooter's hand, clothes, furniture and other surfaces nearby. The presence or absence of that residue says whether a gun was discharged and -- based on its location on clothing and other surfaces -- who and what was near the weapon when it was fired. But current analysis methods can only re-create a crime scene story in hazy detail.

The most widely used technique today specializes in detecting the heavy metals that some ammunition contains. Newer bullets, however, aren't necessarily made with heavy metals, making analyses much more difficult. Also, existing methods require expensive equipment and a lot of time, luxuries law enforcement can't afford. To bring real-life CSI closer to what's hyped on TV, Lednev's team set out to find a new way to trace the ammunition used in a crime.

They developed a novel approach to improve gunshot residue "fingerprinting" that can rapidly detect a wider range of particles than existing methods. "Therefore the ability to detect these chemicals may indicate that a specific ammunition brand was discharged (or was not) during a shooting incident," the researchers state, adding that their work could also have applications in the fields of homeland security and counter-terrorism.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Justin Bueno, Igor K. Lednev. Attenuated Total Reflectance-FT-IR Imaging for Rapid and Automated Detection of Gunshot Residue. Analytical Chemistry, 2014; 140313151124002 DOI: 10.1021/ac4036718

Cite This Page:

American Chemical Society. "Real-life CSI: What can investigators really tell from gunshot residue?." ScienceDaily. ScienceDaily, 26 March 2014. <www.sciencedaily.com/releases/2014/03/140326102644.htm>.
American Chemical Society. (2014, March 26). Real-life CSI: What can investigators really tell from gunshot residue?. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2014/03/140326102644.htm
American Chemical Society. "Real-life CSI: What can investigators really tell from gunshot residue?." ScienceDaily. www.sciencedaily.com/releases/2014/03/140326102644.htm (accessed October 31, 2014).

Share This



More Science & Society News

Friday, October 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

EU, Russia, Ukraine Seal Breakthrough Gas Accord

EU, Russia, Ukraine Seal Breakthrough Gas Accord

AFP (Oct. 31, 2014) Russia agrees to resume gas deliveries to war-torn Ukraine through the winter in an EU-brokered, multi-billion dollar deal signed by the three parties in Brussels. Duration: 01:10 Video provided by AFP
Powered by NewsLook.com
Alcoholic Drinks In The E.U. Could Get Calorie Labels

Alcoholic Drinks In The E.U. Could Get Calorie Labels

Newsy (Oct. 31, 2014) A health group in the United Kingdom has called for mandatory calorie labels on alcoholic beverages in the European Union. Video provided by Newsy
Powered by NewsLook.com
Relief After “gas War” Is Averted

Relief After “gas War” Is Averted

Reuters - Business Video Online (Oct. 31, 2014) A gas war between Russia and Ukraine has been averted. But as Hayley Platt reports a deal was only reached after Kiev's western creditors agreed to partly funding the deal. Video provided by Reuters
Powered by NewsLook.com
Malaria Threat in Liberia as Fight Against Ebola Rages

Malaria Threat in Liberia as Fight Against Ebola Rages

AFP (Oct. 31, 2014) Focus on treating the Ebola epidemic in Liberia means that treatment for malaria, itself a killer, is hard to come by. MSF are now undertaking the mass distribution of antimalarials in Monrovia. Duration: 00:38 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Science & Society

Business & Industry

Education & Learning

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins