The design and use of DNPH-coated silica cartridges for the analysis of carbonyls in outdoor air
- Millipore Corp., Milford, MA (United States). Walter Chromatography Div.
The determination of formaldehyde, acetaldehyde and acetone concentrations in ambient air is a required specification of the PAMS regulation. Section 5.0 of the Technical Assistance Document defines the testing methodology for measuring carbonyls in ambient air. This testing methodology is based on the use of DNPH coated silica cartridges. The user is given the choice of either preparing their own cartridges or purchasing them from a commercial source. Waters introduced the DNPH Silica Sep-Pak Cartridge into the marketplace in 1991. This cartridge is now in widespread use throughout the world in numerous carbonyl air monitoring applications. A key component of their success has been the transferal of the product and application expertise to the customers. This presentation will focus the keys for the successful utilization of the precoated DNPH cartridges for carbonyl monitoring in ambient air. Product design and product performance issues such as lot-to-lot consistency, shelf life, sample stability and potential analyte interferences will be addressed. Examples of actual analysis problems, their symptoms and solutions will also be presented.
- OSTI ID:
- 197348
- Report Number(s):
- CONF-9405167--
- Country of Publication:
- United States
- Language:
- English
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