Emissions and Air Quality Analysis

Numerous manmade toxic gases can negatively impact air quality even at trace levels. Standout examples are halogen hydrides (HCl and HF) and oxides of nitrogen (e.g., NO2), all of which are both acidic and toxic. Some of these are the subject of emissions regulations from bodies like the Environmental Protection Agency (EPA) in the U.S., some are bundled into urban air quality regulations, and some are the subject of both types of regulation. For example, HCl and HF are included in the Mercury and Air Toxics Standards (MATS) targeted at fossil fuel power plant emissions, introduced by the EPA in 2011. And NO2 is one of the major components of the brown smog that is ubiquitous in many industrialized cities throughout the world. As a consequence, there is an ever growing need for sensitive and objective instruments to quantitatively measure these gases at trace levels by scientists, plant operators and regulators, and government (country, state, and city) agencies.

LGR provides analyzers for several of these noxious gas species. Based on our unique and patented OA-ICOS technology, these LGR analyzers provide the ideal combination of small size, low power consumption, high speed (seconds), high sensitivity (e.g., 10 parts per trillion for NO2), high absolute accuracy, rugged reliability and automated operation. Plus, unlike other technologies, they do not suffer from crosstalk with water or other species, eliminating the need for sample processing or drying. This is why they are widely used in these applications, including in situ measurement of emissions, for lab measurement of captured air samples, at remote unmanned monitoring sites, and in mobile (truck, airborne) settings. Moreover, the inherent simplicity, and hence lower cost, of OA-ICOS is a major benefit to applications which are often budget constrained and often involve a network of multiple monitoring sites.