Measuring Methods of Semi- and Non-Volatile Organohalogen Compounds for Efficient Investigation, Monitoring and Countermeasure

Kohei Urano* and Mika Kato*
* Laboratory of Safety and Environmental Engineering, Graduate School of Environment and Information Sciences, Yokohama National University
+ Correspondence should be addressed to Kohei Urano:
(79-7 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501 Japan)

Abstract
Simple and rapid measuring methods are required to promote the countermeasure for POPs. Therefore, recent findings of efficient sampling methods and rapid and correct methods for extraction, concentration, purification and fractionation are introduced. In addition the following effective determination methods are introduced; The "total SNVOX" which determines the concentration as chlorine of all semi- and non-volatile organohalogen compounds such as POPs and their decomposition products with a total organic halogen (TOX) analyzer, the "SNVOXs of each halogen" which determines the concentration as each halogen of all semi- and non-volatile organohalogen compounds by a combustion ion chromatograph, the "immunoassay activities" which determines coloration by a spectrophotometer, the 2,3,4,7,8-P5CDF concentration that can be analyzed very easily, or the chlorobenzenes concentration that can be measured continuously for estimating the TEQ concentration of dioxins. The characteristics of these determination methods and combinations with the effective pretreatment methods are also described.
Furthermore, methods for selecting the effective determination methods are summarized for each necessary case such as investigation of the pollution at a construction site, monitoring of environmental pollution and treatment plants, and development and evaluation of countermeasure techniques.

Key words: semi-and non-volatile organohalogen compounds, POPs, dioxins, efficient measuring method, monitoring