Navigation Links
Explosives and fish are traced with chemical tags
Date:1/12/2012

Researchers at the University of Oviedo (Spain) have come up with a way of tagging gunpowder which allows its illegal use to be detected even after it has been detonated. Based on the addition of isotopes, the technique can also be used to track and differentiate between wild fish and those from a fish farm, such as trout and salmon.

A new method for tagging and identifying objects, substances and living beings has just been presented in this month's issue of the Analytical Chemistry journal. Its creators are scientists at the University of Oviedo who have patented the procedure for inserting chemical tags into products in a way that allows them to be unmistakably identified over time.

The technique consists of adding two stable (non-radioactive) isotopes (types of the same chemical element but with a different number of neutrons) at an established ratio to the object that is to be followed. Then, with an instrument called a mass spectrometer, a sample can be verified as having the predefined isotope ratio. If it does, it is therefore the tagged product.

"This technology is applicable to the invisible tagging of manufactured substances and objects such as explosives, jewellery, artwork, foods and medicines, which helps to prevent fraud and counterfeiting," explains to SINC Jos Ignacio Garca Alonso, one of its authors. "Through simple analytical techniques, a product can be traced from its origin and any possible illegal uses can be detected," he adds.

The researchers have applied this method to gunpowder, an example of an explosive, by adding two tin isotopes (Sn117 and Sn119). After preparing three different mixes (each with differing isotopic proportions so that they can be distinguished from one another), the results reveal that even after detonation the added tags can still be detected in the explosion remains.

Garca Alonso states that "such a procedure can be used in tagging explosives for civil or military use and can even go as far as identifying the product used in a terrorist attack."

Safe for health and the environment

The researcher also highlights that the technique can be used in living organisms without risk to health or the environment: "All living beings have these isotopes, the only thing we have done is change their ratio." Monitoring of seed dispersal or fish populations are fields of scientific research that could benefit from this technology.

In fact, the team has successfully employed barium isotopes (Ba135 and Ba137) for tagging trout. What is more is that the injected tag in the female is transgenerational, meaning that it passes to her eggs and therefore the first generation of fry. The isotopic information is stored for life in the otoliths a calcareous structure in the inner ears of the fish from where samples are taken.

Garca Alonso points out that "different tags can be injected into the trout so that the procedure can be made more specific for the descendents of a single individual or group."

The method is currently being used to assess the effectiveness of salmon repopulation in rivers in Asturias, Spain. The scientists inject one type of chemical tag into wild salmon and another type into those from a fish farm. When the fry raised in captivity are returned to the river, the efficiency of the repopulation process can be determined and river populations can be indirectly estimated.


'/>"/>

Contact: SINC
info@agenciasinc.es
34-914-251-820
FECYT - Spanish Foundation for Science and Technology
Source:Eurekalert  

Related biology news :

1. NIST, ASTM land a one-two punch to fight explosives terrorism
2. Sensors to detect explosives, monitor food being developed at UH
3. International Drug & Explosives Detection Company IDenta Corp Reports on BTK- Bullet Hole Testing Kit
4. Developing enzymes to clean up pollution by explosives
5. New NIST trace explosives standard slated for homeland security duty
6. Water acts as catalyst in explosives
7. New method for detecting explosives
8. Tree-killing pathogen traced back to California
9. University of Tennessee scientist: Flowers rapid growth rate can be traced back 65 million years
10. Impaired brain connections traced to schizophrenia mutation
11. Form of Crohns disease traced to disabled gut cells
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Explosives and fish are traced with chemical tags
(Date:4/11/2017)... MELBOURNE, Florida , April 11, 2017 ... "Company"), a security technology company, announces the appointment of independent ... John Bendheim to its Board of Directors, furthering the ... ... behalf of NXT-ID, we look forward to their guidance and ...
(Date:4/5/2017)... SEATTLE , April 5, 2017  The Allen ... the Allen Cell Explorer: a one-of-a-kind portal and dynamic ... large-scale 3D imaging data, the first application of deep ... edited human stem cell lines and a growing suite ... the platform for these and future publicly available resources ...
(Date:4/5/2017)... April 4, 2017 KEY FINDINGS ... expand at a CAGR of 25.76% during the forecast ... the primary factor for the growth of the stem ... https://www.reportbuyer.com/product/4807905/ MARKET INSIGHTS The global stem cell ... application, and geography. The stem cell market of the ...
Breaking Biology News(10 mins):
(Date:7/17/2017)... , ... July 17, 2017 ... ... technology-enabled clinical trial solutions, today announced safety software company AB Cube has ... eHealth Solutions business segment to advance technology innovation across life sciences and ...
(Date:7/17/2017)... ... July 17, 2017 , ... ... Hsing, Ph.D. , recently participated in the BiG (Biomedical Innovation Group) annual meeting ... by discussions of CAR-T (chimeric antigen receptor T-cell) therapy, a rapidly developing highly ...
(Date:7/16/2017)... N.J. (PRWEB) , ... July 16, 2017 , ... ... laboratory equipment and analytical instruments announced the launch of its new line of ... introduced five rocking and waving shaker models (both analog and digital) for laboratory ...
(Date:7/14/2017)... ... July 14, 2017 , ... ... company . Sonic Manufacturing Technologies has installed a solar system on its roof ... three-year period,” the President of Sonic, Kenneth Raab stated. The company’s proud history ...
Breaking Biology Technology: