Navigation Links
New NIST trace explosives standard slated for homeland security duty
Date:11/18/2009

Security personnel need to be able to find explosive materials and persons who have been in contact with them. To aid such searches, the National Institute of Standards and Technology (NIST), with support from the Department of Homeland Security, has developed a new certified reference material, Standard Reference Material (SRM) 2905, Trace Particulate Explosives. Compatible with field and laboratory assay methods, the SRM will be helpful in calibrating, testing and developing standard best operating procedures for trace-explosives detectors.

Most air travelers have probably had some experience with prototype walkthrough portal or tabletop-type trace explosive detectors. Customs inspectors use the machines to check international cargo shipments, and firefighters and police officers use them to evaluate suspicious packages.

The goal of these detectors is to effectively collect residue particles that result from handling materials that might be used to fabricate a bomb and then evaluate the explosives content. For example, when operating the tabletop device, security personnel use a piece of material to swab packages and bags for explosive residues. The security officer then places the swab in a tabletop device that heats the material, separating any chemical residues that may have been absorbed.

Like other sensitive instruments, these machines need well-defined calibration standards to ensure that they are working properly. According to NIST chemist William MacCrehan, the calibration materials that the vendors of these machines provide are typically of unknown quality.

"These detectors need to be reliable and precise enough to detect particles that weigh as little as a few billionths of a gram," says MacCrehan. "We created this SRM to provide manufacturers and operators with high quality, independently generated and validated reference test materials to enable better designs and reduce the number of false positives and negatives."

SRM 2905 consists of four different test substances designed to simulate trace residues of C-4 plastic explosives and TNT. The substances themselves consist of inert solid particles about 20 to 30 microns in diameter. The particles have been coated with explosive materials and a florescent tag, which enables the material to be seen using specially filtered optics or glasses. Although the particles are coated with explosive material, MacCrehan says they are incapable of exploding on their own and are completely safe to handle.

This release is part of a larger, ongoing project to develop other wet and dry materials that simulate SEMTEX, gunpowder and peroxide-type explosives. According to MacCrehan, efforts also are underway to develop reference materials to help train bomb-sniffing dogs.


'/>"/>

Contact: Mark Esser
mark.esser@nist.gov
301-975-8735
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Related biology technology :

1. WellGen Recognized as Nutraceutical “Innovator” by Global Business Insights
2. Henk Hoogenkamp, Accomplished Author and Food Ingredient Scientist, Joins NutraCea as Executive Advisor on the Utilization of Stabilized Rice Bran in Food Ingredient Applications
3. Star Scientific Plans Worldwide Marketing and Sales of CigRx(TM) Nutraceutical in Partnership with inVentiv Health
4. Frost & Sullivan Recognizes Agile Therapeutics for Its Innovative Weekly Low-Dose Contraceptive Patch
5. SpectraCell Contracts With Beech Street Corporation
6. Synthes and Kensey Nash Announce Strategic Agreement for Extracellular Matrix Products
7. Neptune Technologies Reports Fiscal 2009 Results - Record revenue and profitability growth in nutraceutical business
8. Industry Expert Reveals Cutting Edge Biotechnology Science for Nutraceutical and Functional Food Applications
9. Warner Chilcott Announces NDA Submission for Low Dose Oral Contraceptive
10. PHARMORX Security Introduces New Technology Solutions for Counterfeiting, Grey Market Diversion, Track & Trace
11. MyHeritage And Family Tree DNA Partner To Help People Trace Family History Using DNA
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New NIST trace explosives standard slated for homeland security duty
(Date:12/5/2016)... , Dec 5, 2016 Research and ... "Biomarkers - Technologies, Markets and Companies" to their offering. ... , , ... their discovery using various -omics technologies such as proteomics and metabolomics. ... new tests are also based on biomarker. Currently the ...
(Date:12/5/2016)... 2016 /PRNewswire/ - Resverlogix Corp. ("Resverlogix" or the ... and Safety Monitoring Board (DSMB) for the Company,s ... (CVD) patients has completed a second planned safety ... as planned without any modifications. The DSMB reviewed ... or efficacy concerns were identified. The DSMB will ...
(Date:12/4/2016)... ... December 02, 2016 , ... A proposed five-year extension ... federally funded research and development is welcome news for the photonics community, say ... , As part of the National Defense Authorization Act (NDAA) compromise agreement finalized ...
(Date:12/2/2016)... 2016 More than $4.3 million was raised last ... DHMD ). The gala was held at the American Museum ... and honored Alan Alda and ... and medicine and the public understanding of science. Since the ... event has raised $40 million for the Laboratory,s research and ...
Breaking Biology Technology:
(Date:11/15/2016)... , Nov. 15, 2016  Synthetic Biologics, ... developing therapeutics focused on the gut microbiome, today ... of 25,000,000 shares of its common stock and ... stock at a price to the public of ... to Synthetic Biologics from the offering, excluding the ...
(Date:6/27/2016)... 27, 2016 Research and Markets has announced ... report to their offering. ... to grow at a CAGR of 12.28% during the ... on an in-depth market analysis with inputs from industry experts. The ... coming years. The report also includes a discussion of the key ...
(Date:6/21/2016)... British Columbia , June 21, 2016 /PRNewswire/ ... appointed to the new role of principal product ... been named the director of customer development. Both ... NuData,s chief technical officer. The moves reflect NuData,s ... teams in response to high customer demand and ...
Breaking Biology News(10 mins):