三点比较式臭袋法与动态嗅觉仪法关联性研究

Study on Correlation of Triangle Odor Bag Method and Dynamic Olfactometry

由于多数恶臭物质的嗅阈值较低,使其恶臭浓度的测定较为困难。感官测定法因其可直接反映恶臭对人们的影响成为普遍使用的恶臭测定方法。国标方法三点比较式臭袋法存在一些缺陷,而世界上许多发达国家采用高自动化和高准确度的动态嗅觉仪法进行恶臭浓度测定。采用硫化氢和氨气进行实验,将两种方法测定结果进行关联研究,以推动动态嗅觉仪法在我国的应用。研究表明,两种测定方法对硫化氢和氨气的测定结果,具有一定的相关性。此外,在臭气强度的测定上,动态嗅觉仪法表现出更大优越性。

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.