Occurrence of Total Organic Halogen and Trihalomethanes in Tap Water in Various Conditions. Part 1. Effects of Heating and Regional Differences.:—Effects of Heating and Regional Differences—
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概要
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Total Organic Halogen (TOX) and trihalomethanes (THMs) in tap water in Niigata city were measured before and after heating. 66% of TOX, almost all of THMs and 90% of mutagenicity were reduced shortly after boiling. It was shown that most of mutagenicity in tap water results from the organic fraction which volatilizes or is decomposed by boiling. Further boiling neither reduced nor increased the mutagen intensity.<BR>TOX and THMs in tap water of 9 cities in Japan were measured. Maximum, minimum and average of TOX were 131μg/l, 5μg/l and 79μg/l, respectively. Correlation coefficient between TOX and THMs was 0.965. THMs occupied about 30% of TOX. Correlation coefficient of TOX between before and after boiling was 0.959. TOX after boiling occupied about 40% of TOX before boiling.
- 日本環境化学会の論文
日本環境化学会 | 論文
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