Study on Correlation of Triangle Odor Bag Method and Dynamic Olfactometry

As the olfactory thresholds of most odor substance are low,it is hard to determine odor concentration. Comparing with other methods,the sense organ methods are widely used. Here are still some shortages to the triangle odor bag method,while the dynamic olfactometry with high-automation and high-accuracy is commonly used in the developed countries. Experiments on two typical odor gases-hydrogen sulfide and ammonia are carried out to make some associated research in order to match the use of dynamic olfactometry 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 cross-referred in certain extent. The dynamic olfactometry can also be used in odor intensity determination.