Download ASSET™ EZ4-NCO Dry Sampler for Isocyanates - Sigma

ASSET™ EZ4-NCO Dry Sampler for Isocyanates
Providing Ultimate Sensitivity for Vapor Phase and Particulate Isocyanates
Isocyanates are used in the production of polyurethane (PUR) materials, one of the most widely
used plastics in the world. Workers who are exposed to these compounds are at risk for respiratory disorders, asthma and other health risks. Particulates form incomplete reactions with both
the reagent and the isocyanate monomers and oligomers being measured, which results in
underestimation of exposure.
Isocyanates exposure is frequently
underestimated with other air
sampling devices. Why?
The ASSET EZ4-NCO sampling device is a unique dry sampler based on derivatization of isocyanate groups with di-n-butylamine (DBA). The sampler consists of a denuder and a filter, both
impregnated with DBA. The extract is analyzed using LC-MS or LC-MS-MS offering the ultimate
sensitivity and low detection limits not capable with other methods.
The particulates form incomplete reactions
with both the reagents and the isocyanate
compounds.
Isocyanate
Features
to achieve low detection limits
• Ability
for both vapor and particulate phase
isocyanates
• Sampling from 5 minutes > 8 hours
derivatization reactions into stable
• Fast
derivatives
• No field extraction/desorption
• High capacity
• No interferences
special storage requirements before
• No
and after sampling
Dibutylamine
Isocyanate dibutylamine derivative
(urea derivative)
Ordering Information
Description
Sampling Device
ASSET EZ4-NCO Dry Sampler
Analytical LC-MS-MS Column
Ascentis® Express C18, 5 cm x 2.1 mm, 2.7 µm particles
Analytical Standard
DBA Isocyanate Mix (acetonitrile:methanol, 99:1, varied conc)
sigma-aldrich.com
Cat. No.
10
50
5027-U
5028-U
1
53822-U
6 x 1 mL
40141-U
6 x 1 mL
40142-U
2 x 1 mL
40143-U
Isocyanic acid-di-n-butylamine (ICA-DBA) 1 µg/mL
Ethyl isocyanate-di-n-butylamine (EIC-DBA) 1 μg/mL
Hexamethylene diisocyanate-2(di-n-butylamine) (HDI-2(DBA)) 1 μg/mL
Isophorone isocyanate-2(di-n-butyl amine) isomer 1 (IPDI-2(DBA)) 1 μg/mL
Isophorone isocyanate-2(di-n-butyl amine) isomer 2 (IPDI2-2(DBA)) 0.4 μg/mL
4,4’-Methylenediphenyl diisocyanate-2(di-n-butylamine) (4,4’-MDI-2(DBA)) 1 μg/mL
Methyl isocyanate-di-n-butylamine (MIC-DBA) 1 μg/mL
Phenyl isocyanate-di-n-butylamine (PhI-DBA) 1 μg/mL
Propyl isocyanate-di-n-butylamine (PIC-DBA) 1 μg/mL
2,4-Toluene diisocyanate-di-n-butylamine (2,4-TDI-2(DBA)) 1 μg/mL
2,6-Toluene diisocyanate-2(di-n-butylamine) (2,6-TDI-2(DBA)) 1 μg/mL
d9-DBA Isocyanate Internal Standard Mix
For more information, visit
Qty.
Isocyanic acid-di-n-butylamine-d9 (ICA-DBA- d9) 1 µg/mL
Ethyl isocyanate-di-n-butylamine-d9 (EIC-DBA-d9) 1 μg/mL
Hexamethylene diisocyanate-2(di-n-butylamine-d9) (HDI-2(DBA-d9)) 1 μg/mL
Isophorone diisocyanate-2(di-n-butylamine-d9) isomer 1 (IPDI-2(DBA-d9)) 1 μg/mL
Isophorone diisocyanate-2(di-n-butylamine-d9) isomer 2 (IPDI2-2(DBA-d9)) 0.28 μg/mL
4,4-Methylenediphenyl diisocyanate-2(di-n-butylaine-d9) (4,4’-MDI-2(DBA-d9)) 1 μg/mL
Methyl isocyanate-di-n-butylamine-d9 (MIC-DBA-d9) 1 μg/mL
Phenyl isocyanate-di-n-butylamine-d9 (PhI-DBA-d9) 1 μg/mL
Propyl isocyanate-di-n-butylamine-d9 (PIC-DBA-d9) 1 μg/mL
2,4-Toluene diisocyanate-2(di-n-butylamine-d9) (2,4-TDI-2(DBA-d9)) 1 μg/mL
2,6-Toluene diisocyanate-2(di-n-butylamine-d9) (2,6-TDI-2(DBA-d9)) 1 μg/mL
DBA Isocyanates Mix Kit
Includes 1 mL of 40141-U and 1 mL of 40142-U listed above
Analytical Service:
References
Methods:
ISO 17734-1:2006, Determination of organonitrogen compounds in air using liquid chromatography and mass spectrometry —
Part 1: Isocyanates using dibutylamine derivatives.
ISO 17734-2:2006, Determination of organonitrogen compounds in air using liquid chromatography and mass spectrometry —
Part 2: Amines and aminoisocyanates using dibutylamine and ethyl chloroformate derivatives.
Institutet För Kemisk Analys Norden AB
Esplanadgatan 9
SE-281 38 Hässleholm
Sweden
Contact: Mikael Adamsson
Office: +46-451-655-61
Email: [email protected]
In a technical ISO report, the technology is described as the only methodology that covers all situations.
ISO/TR 17737:2007, Workplace air – Guidelines for selecting analytical methods for sampling and analyzing isocyanates in air.
Publications:
Title: Solvent-Free Sampling with Di-n-Butylamine for Monitoring of Isocyanates in Air
Authors: Asa Marand, Daniel Karlsson, Marianne Dalene and Gunnar Skarping
Affiliation: Department of Analytical Chemistry, Work Environment Chemistry, Stockholm University, P.O. Box 460,
S-28124 Hassleholm, Sweden
Journal: Journal of Environmental Monitoring, 2005, 7, pg. 335-343
Please contact Kristen Schultz at
[email protected] if you
would like to become an
Analytical Service partner.
Title: Determination of Airborne Isocyanates as Di-n-Butylamine Derivatives Using Liquid Chromatography and
Tandem Mass Spectrometry
Authors: Daniel Karlsson, Jakob Dahlin, Asa Marand, Gunnar Skarping and Marianne Dalene
Affiliation: Department of Analytical Chemistry, Work Environment Chemistry, Stockholm University, P.O. Box 460,
S-28124 Hassleholm, Sweden
Journal: Analytica Chimica Acta 534 (2005) 263-269
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