Navigation Links
New spectrometry standard for handheld chemical detectors aids first responders
Date:10/25/2013

When it comes to detectors for dangerous chemicals, toxins or nefarious germs, smaller and faster is better. But size and speed must still allow for accuracy, especially when measurements by different instruments must give the same result.

The recent publication of a new standarda culmination of years of research at the National Institute of Standards and Technology (NIST)provides confidence that results from handheld chemical detectors can be compared, apples-to-apples.

Such detectors are used by emergency responders to check for the presence of explosives or toxic chemicals that threaten public safety. Quality control managers in the pharmaceutical industry use them to verify the identity of chemicals going into their production lines.

The new standard, published recently by ASTM International, is intended as a guide to correct the output from different handheld Raman spectrometers, so that different instruments produce the same result for the same sample.

Raman spectrometers identify chemicals by shining laser light on a sample and detecting the very small changes in the wavelength of that light as it is re-emitted from the sample. However, spectrometers from different manufacturers can produce signals with different peak intensities. These differences can be confusing, particularly if first responders from different agencies use different instruments and get differing results on an unknown sample in the field.

"Our goal is that people get the same answer for the same sample on any machine," says NIST chemist Steven Choquette.

His team developed a series of NIST Standard Reference Materials (SRMs) that are used to correct Raman systems with differing excitation lasers. These standards enable the correction of the differences in peak intensities reported for the same sample by different Raman spectrometers. They then continued to work with spectrometer manufacturers to develop an industry consensus standard to enable comparisons among Raman spectrometers. Their work was funded by the NIST Law Enforcement Standards Office (OLES) and the Department of Homeland Security.


'/>"/>

Contact: Michael E. Newman
michael.newman@nist.gov
301-975-3025
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Related biology news :

1. Markets for PCR, DNA Microarray, DNA Sequencing, Mass Spectrometry and Flow Cytometry to Exceed $50 billion by 2015
2. Review outlines best practice standards for coordinator-based fracture liaison services
3. Stem cells reach standard for use in drug development
4. Setting the standard for sustainable bioenergy crops
5. New review sets international standards for best practice in fracture liaison services
6. U.S. Army and Vermillion to Assess Health and Economic Benefits of OVA1 as a Standard of Care
7. New emissions standards would fuel shift from coal to natural gas
8. ArcticNet recommends practical solutions to improve standard of living in Canadas north
9. New and revised standards for omega-3s, natural sweeteners and other food ingredients proposed
10. Reducing radiation: Heart Institute model shows hope for new standards worldwide
11. Whitehead scientists identify major flaw in standard approach to global gene expression analysis
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New spectrometry standard for handheld chemical detectors aids first responders
(Date:6/27/2016)... Research and Markets has announced the addition ... to their offering. The report ... to grow at a CAGR of 12.28% during the period 2016-2020. ... in-depth market analysis with inputs from industry experts. The report covers ... The report also includes a discussion of the key vendors operating ...
(Date:6/22/2016)... , June 22, 2016  The American College of Medical ... Show Executive Magazine as one of the fastest-growing trade ... 25-27 at the Bellagio in Las Vegas ... highest percentage of growth in each of the following categories: ... companies and number of attendees. The 2015 ACMG Annual Meeting ...
(Date:6/22/2016)... , June 22, 2016   Acuant ... and verification solutions, has partnered with RightCrowd ... solutions for Visitor Management, Self-Service Kiosks and ... products that add functional enhancements to existing ... corporations and venues with an automated ID ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... PHILADELPHIA , June 27, 2016  Alex,s Lemonade ... announced that that it will open a state-of-the-art bioinformatics ... childhood cancer research. This announcement comes as Liz ... attends the National Cancer Moonshot Summit in ... Dr. Biden as a participant and advocate of pediatric ...
(Date:6/27/2016)... , June 27, 2016  Global demand ... 4.6 percent through 2020 to $7.2 billion.  This ... and beverages, cleaning products, biofuel production, animal feed, ... biotechnology, diagnostics, and biocatalysts). Food and beverages will ... driven by increasing consumption of products containing enzymes ...
(Date:6/27/2016)... , June 27, 2016 /PRNewswire/ - BIOREM Inc. (TSX-V: BRM) ... advised by its major shareholders, Clean Technology Fund I, ... United States based venture capital funds which ... Biorem (on a fully diluted, as converted basis), that ... of their entire equity holdings in Biorem to TUS ...
(Date:6/27/2016)... -- Sequenom, Inc. (NASDAQ: SQNM ), a life ... development of innovative products and services, announced today that ... denied its petition to review decisions by ... Patent No. 6,258,540 (",540 Patent") are not patent eligible ... Court,s Mayo Collaborative Services v. Prometheus Laboratories decision.  In ...
Breaking Biology Technology: