Measurements of trace substances (e.g. Nitrate, sulphate, anions, cations, methane, etc) from air and snow samples from a remote area on the east Antarctic plateau

The relationship between atmospheric concentrations and snow impurity content was examined in relation to meteorological data collected during the season. Filters were exposed to air samples and chemically analysed to determine airbourne concentrations of Na, Al, Ca, K, Cl, nitrate, sulphate and possibly some heavy metals to indicate concentrations of the chief airbourne particulate impurities (sea salt, rock dust and sulphates).

The filters were also examined by scanning electron microscope to determine the physical characteristics of the airbourne particulates with information about chemical composition of individual particles. Soluble anions (sulphate, nitrate, chloride) and cations (magnesium, sodium, potassium and calcuym), methane and sulphonate were also tested for. Polyurethane foam filters were analysed for trace levels of toxic organic compounds such as dioxins, furans and pesticide residues.