Featured Research

from universities, journals, and other organizations

Body of evidence: New fast, reliable method to detect gravesoil

Date:
August 2, 2010
Source:
National Institute of Standards and Technology (NIST)
Summary:
Finding bodies buried by someone who wanted them to stay undiscovered can be difficult. However a new technique can reliably detect biochemical changes in a decomposing cadaver.

Nothing against bloodhounds, but finding bodies buried by someone who wanted them to stay undiscovered can be difficult. However a new technique developed by scientists at the National Institute of Standards and Technology (NIST), can reliably detect biochemical changes in a decomposing cadaver.

Typically, cadaver-sniffing dogs or ground penetrating radar are used to detect clandestine gravesites. But these methods are not always useful in all scenarios, such as if a body is buried under concrete. The NIST instrument is a modification of a technique developed at the lab to sense minute levels of difficult-to-detect chemical compounds. The process uses an alumina-coated, porous layer, open tubular (PLOT) column with a motorized pipette that pulls in air samples at ambient temperatures. The device detects trace amounts of ninhydrin-reactive nitrogen (NRN) that collects in air pockets above and close to gravesoil. Previously, this process involved the tedious and expensive process of solvent extraction of soil samples. Now, a simple probe slightly thicker than a human hair can be inserted into the ground to detect decaying flesh.

Developed by NIST chemists Thomas J. Bruno and Tara M. Lovestead and spelled out in a paper published in Forensic Science International, this is the only known example of detecting NRN in the vapor phase and gives detectives another tool for finding hidden graves. Moreover, Bruno said that the device can be used to detect a body buried under a concrete slab, merely by drilling a one-eighth-inch hole and inserting the probe, thereby eliminating the need for unnecessary digging.

Bruno and Lovestead used frozen, dead feeder rats for their study and took samples of rats buried under 8 centimeters of soil, laid on top of the soil and from boxes with no dead rats in them. They took samples at one week intervals for six weeks and then again at 10 and 20 weeks and found that after five weeks, the amount of NRN was at its highest, but it was still detectable after 20 weeks.

The device operates at room temperatures, as opposed to ultra-cold temperatures, which is a big plus for future portability as well as the fact that it employs chemicals already in use by law enforcement officials (ninhydrin reagent) for exposing latent fingerprints. Bruno is working on making a portable version of the instrument -- at present only the sampling device is portable; testing of samples must still be done in the lab -- giving this new device and detection process great promise for use by law enforcement officials in the field.


Story Source:

The above story is based on materials provided by National Institute of Standards and Technology (NIST). Note: Materials may be edited for content and length.


Journal Reference:

  1. Tara M. Lovestead, Thomas J. Bruno. Detecting gravesoil with headspace analysis with adsorption on short porous layer open tubular (PLOT) columns. Forensic Science International, 2010; DOI: 10.1016/j.forsciint.2010.05.024

Cite This Page:

National Institute of Standards and Technology (NIST). "Body of evidence: New fast, reliable method to detect gravesoil." ScienceDaily. ScienceDaily, 2 August 2010. <www.sciencedaily.com/releases/2010/07/100730191706.htm>.
National Institute of Standards and Technology (NIST). (2010, August 2). Body of evidence: New fast, reliable method to detect gravesoil. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2010/07/100730191706.htm
National Institute of Standards and Technology (NIST). "Body of evidence: New fast, reliable method to detect gravesoil." ScienceDaily. www.sciencedaily.com/releases/2010/07/100730191706.htm (accessed July 25, 2014).

Share This




More Plants & Animals News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Boy Attacked by Shark in Florida

Boy Attacked by Shark in Florida

Reuters - US Online Video (July 24, 2014) An 8-year-old boy is bitten in the leg by a shark while vacationing at a Florida beach. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Goma Cheese Brings Whiff of New Hope to DRC

Goma Cheese Brings Whiff of New Hope to DRC

Reuters - Business Video Online (July 24, 2014) The eastern region of the Democratic Republic of Congo, mainly known for conflict and instability, is an unlikely place for the production of fine cheese. But a farm in the village of Masisi, in North Kivu is slowly transforming perceptions of the area. Known simply as Goma cheese, the Congolese version of Dutch gouda has gained popularity through out the region. Ciara Sutton reports. Video provided by Reuters
Powered by NewsLook.com
Tyrannosaur Pack-Hunting Theory Aided By New Footprints

Tyrannosaur Pack-Hunting Theory Aided By New Footprints

Newsy (July 24, 2014) A new study claims a set of prehistoric T-Rex footprints supports the theory that the giant predators hunted in packs instead of alone. Video provided by Newsy
Powered by NewsLook.com
Dogs Appear To Become Jealous Of Owners' Attention

Dogs Appear To Become Jealous Of Owners' Attention

Newsy (July 23, 2014) A U.C. San Diego researcher says jealousy isn't just a human trait, and dogs aren't the best at sharing the attention of humans with other dogs. Video provided by Newsy
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:
from the past week

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