Study on Determination of Odour Concentration

摘要

According to the facts that the olfactory thresholds of most odour substances are relatively low and there are still some shortages of the Chinese National Standard--Triangle bags method, so the Dynamic olfactometry with high-automation and high-accuracy are studied to determine the odour concentration, which is commonly used in the developed countries. Experiments on two typical odour gases--hydrogen sulfide and ammonia are carried out to make some associated research in order to match the use of Dynamic olfactometry method with the Chinese National Standard. The results showed that certain correlations exist between the determinations of the two single substances by each method, so they can be corss-referred in certain extent.