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:2/24/2017)... -- Symic Bio, a biopharmaceutical company focused on matrix ... announced today the completion of enrollment for the SHIELD ... trial will evaluate the safety and efficacy of SB-030, ... restenosis following angioplasty. "We,re pleased to ... Nathan Bachtell , M.D., Chief Medical Officer of ...
(Date:2/24/2017)... ... , ... FireflySci, Inc is an explosive small business that continues to grow ... bringing their powerful cuvette and spectrophotometer calibration to the spectroscopy world. ... on as they add yet another mark on the global map. , With distributors ...
(Date:2/24/2017)... 2017  OncoSec Medical Incorporated ("OncoSec") (NASDAQ: ONCS), a ... Key Opinion Leader event to highlight new clinical data ... presentation at the upcoming 2017 ASCO-SITC Immuno-Oncology Symposium and ... be held in-person and via live webcast on Tuesday, ... PST at the Lotte New York Palace Hotel in ...
(Date:2/23/2017)... ... February 23, 2017 , ... ... portfolio to include an array of biochemical analyses critical for Lead Discovery. ... drive their hit-to-lead and SAR programs, including inhibitor potency and selectivity, mechanism of ...
Breaking Biology Technology:
(Date:2/10/2017)... , Feb 10, 2017 Research ... report "Personalized Medicine - Scientific and Commercial Aspects" ... ... medicine. Diagnosis is integrated with therapy for selection of treatment ... early detection and prevention of disease in modern medicine. Biochip/microarray ...
(Date:2/8/2017)... Feb. 7, 2017  Aware, Inc. (NASDAQ: AWRE ... reported financial results for its quarter and year ended December ... of 2016 was $3.9 million compared to $6.9 million in ... quarter of 2016 was $0.6 million compared to $2.6 million ... fourth quarter of 2016 was $0.5 million, or $0.02 per ...
(Date:2/8/2017)... , Feb. 7, 2017 Report Highlights ... billion by 2021 from $8.3 billion in 2016 at ... 2016 to 2021. Report Includes - An overview ... global market trends, with data from 2015 and 2016, ... 2021. - Segmentation of the market on the basis ...
Breaking Biology News(10 mins):