Requests to measure hydrogen sulphide (H2S) in ambient air at unthinkably high levels seem to be at odds with our efforts to detect and report single-figure parts per billion H2S emissions. So, why are we asked for such high ranges?
It isn’t easy to monitor air quality on or around a mining site: dusty, big machinery, water spray to suppress dust – the list goes on. But you may have to, because of a site permit or some other sort of compliance requirement. That’s the main reason we have seen, but other reasons include baselining and for health and safety.
Or how many air quality measurement points do I need? Annoying as it is, the answer is ‘it depends’.