Analysis of Effect on Water Quality due to Leaching from Water Works Equipment Materials using the TOC-VCSH
Introduction
Along with the revision of the drinking water quality standard of the Water Works Law, a part of the Japanese Ministry of Health, Labour and Welfare ordinance providing the technical standards for water works facilities was revised. This revision specifies the total organic carbon (TOC) instead of the potassium permanganate consumption quantity as the measurement method for determining the quantity of organic substance leaching from water supply materials in contact with purified water or water in the process of being purified. (Standard value is 0.5mg/L or less) We introduce here an example of TOC analysis of effused liquid from drinking water supply equipment polyvinyl chloride pipe using the total organic carbon analyzer TOC-VCSH.
June 16, 2005 GMT