Abstract
With the revision to the Air Pollution Control Law, mercury emission facilities are obliged to measure mercury in flue gas on a regular basis. Although gaseous and particulate mercury in flue gas is sampled separately using the measurement method as specified in the law, Japan’s Ministry of the Environment is authorizing the addition of a method that collects particulate and gaseous mercury using one device. In addition to the method, various methods such as a dry measurement method using a sorbent trap and a continuous measurement method using sampling have been specified by JIS, the US EPA, and other countries. Many factors must be taken into consideration in order to determine measurements with a high level of accuracy.
This paper presents the characteristics of various mercury measurement technologies for flue gas as specified in Japan and overseas. It also outlines the revised contents of the JIS K 0222 measurement method, which is being reviewed.
