Airborne aldehydes and ketones are collected by passing air through a cartridge containing 2,4-dinitrophenylhydrazine (DNPH). Carbonyl compounds react with the DNPH to form hydrazones, which are immobilized on the cartridge. These compounds can be easily eluted from the cartridge with acetonitrile and analyzed by HPLC with UV detection. Traditionally, this analysis including the workup contains a series of manual steps, which can become time-consuming and could incur experimental error.
Automating the extraction...
Isocyanates are used as a raw material to produce a number of products . Personal exposure can occur while the products made with isocyanates are being applied, or when the materials are removed by grinding or thermal degradation. Workers who are exposed to these compounds are at risk for respiratory disorders and asthma. The highly reactive nature of the isocyanate compounds and the low occupational exposure limits put high demands on both sampling and analytical techniques for monitoring of isocyanates in...
This market is driven by law and legislations made in Europe and/or USA (US EPA). It deals with ambient air monitoring : analysis / calibration / automatic zero air in continuous 7 days a week. Ambient air monitoring: in France this service is controlled by associations that calculate the ATMO index. CHROMATOTEC instruments such as the BTX ,the Sulfur and the VOC analyzers can be a good complement of their analyzers such as O3, CO2, DUST… in the analysis of ambient air.
MOCON’s Baseline® Series 9100 Gas Chromatograph equipped with a photoionization detector (PID) provides a quick, cost effective quantitative analysis of IPA and acetone in air at levels in the ppb and sub-ppb range with no preconcentration necessary.
Isopropanol and acetone are detected and accurately quantified to sub-ppb levels in under 3 minutes with ethanol producing no interference. The instrument is sensitive to below 5 ppb for both IPA and acetone employing the MOCON Baseline® standard PID or 0.1 ppb...
The Tekran 2600 versatility is evident with the economical and convenient configuration for manual analysis of air samples collected on gold cartridges. Converting the instrument allows calibration by simple injection of gaseous Hg using the Tekran 2505. Once analyzed, the gold cartridges are immediately ready for redeployment.
Hundreds of government agencies and companies have embraced the speed and detection capability of DART® mass spectrometry. The use of open air ionization simplifies analysis of even the most complex samples. Experiment modules can be used to increase the reliability of any method by permitting control of sample positioning. The result: a low cost of operation, easy-to-implement technology that improves your ability to get answers to pressing problems.
E Instruments International’s gas monitoring specialists performed a forklift exhaust gas analysis and an ambient air quality analysis at a Pennsylvania warehouse in which a fleet of propane forklift trucks is operated on a daily basis. The main objectives of these tests were to investigate:
Munters provides specially engineered systems that allow the automotive industry to maintain temperature and humidity, to the most precise specifications. Our products are used in a variety of applications.
based in Amesbury, MASSACHUSETTS (USA).
Elemental analysis is a generic term for a group of applications which deal with the analysis of a variety of materials (chemicals, liquids, polymers, waste material, etc.) for their elemental or isotopic properties. Typical examples of elemental analysis techniques where mass flow control plays a key role are Total Organic Carbon (TOC) or Total Organic Halides (TOX).
Manufacturing of powdered and liquid flavorings and fragrances involves production phases where flavoring chemicals may be released into the ambient air breathed by workers. Exposure control by gas analyzers in the production rooms and laboratories is necessary to ensure that the Time-Weighted Average (TWA) concentrations do not exceed the maximum Permissible Emission Limit (PEL) values.
In addition to miscellaneous products, shipping containers might contain toxic gases that present health hazards for workers opening or unloading them. Gasmet manufactures portable and powerful gas analyzers for measuring these hazardous gases inside enclosed spaces. With our solutions, you can measure vast variety of gases simultaneously in cost-effectively.
Cerex Monitoring Solutions manufactures UVDOAS analyzers for a variety of Benzene monitoring applications. As benzene specific single gas or multi-gas analyzers, our instruments are available with application specific detection ranges and fully configurable alarm functionality.