AWN Consulting has extensive capabilities in monitoring ambient levels of pollutants in the atmosphere and in interpreting trends and pollution episodes in the atmosphere. The air team can undertake extensive monitoring programmes for range of pollutants including NOX, SO2, PM10 / PM2.5, VOCs, Acid Gases (HCl / HF), Heavy Metals, PAHS and PCDD /PCDFs.

AWN Consulting has a range of advanced ambient air monitoring instrumentation which has obtained regulatory approval. PM₁₀ sampling is undertaken by means of an R&P Partisol^®-Plus Sequential Air Sampler (Model 2025). The sampler is a manual air sampling platform which has been designed to meet US EPA Reference Designation (RFPS-1298-127). Monitoring of nitrogen dioxide is carried out using a regulatory approved chemiluminescent analyser (Teledyne Instruments, Model 200E). In this method, the NOx (NO + NO2) concentration is determined based on its direct relationship with the level of energy emitted by chemiluminescent NO2, which is formed when nitric oxide (NO) reacts with ozone (O3) in an evacuated chamber within the analyser. One of the major advantages of this monitoring method is that it provides high resolution continuous measurement of NO2, and hence the results can be used to compare with the hourly limit value.