To obtain timely data for the purpose of air quality assessment, air quality trend reporting and to meet the requirements for inclusion of the data in provincial and national air quality databases, a continuous method of monitoring Hydrogen Sulphide (H2S) and Total Reduced Sulphur (TRS) concentrations in ambient air is used. Both parameters are included in this procedure due to their similarities. This method is capable of measurement updates at a rate of once every five minutes or faster. Readings from instruments of this method enables the calculation of hourly averaged concentrations of H2S/TRS. Commercially available H2S/TRS analyzers are used in the method.
This method is applicable to the measurement of H2S/TRS concentrations in ambient air in the range of 1.0 parts per billion (ppb) to 100.0 parts per billion (ppb) and over.
This method adheres to the requirements of the current Air Monitoring Directive (AMD)1989 by Alberta Environment. It should be considered that the current and any future amendments or drafts of the AMD will be used as the benchmark for requirements and criteria for ambient air monitoring practices conducted in the Province of Alberta. Information used to write this procedure was also taken from sources identified in the reference section