皇居外苑濠水質の衛生化学的研究(第4報)濠水の栄養塩類の収支と濠水質との関係

概要

論文の詳細を見る
For planning the cleanup of the eutrophic moat water, nutrient taken in algae and seasonal changes of influent and effluent of nutrient were investigated. Samples of moat water, effluent water and influent water such as ground water and storm water, were collected 4 times a year, algae were separated by a filter paper, and nutrients in the filtrate water and non-filtrate water were determined. In summer (August), organic nitrogen in algae increased markedly compared with those in other seasons. Inorganic nitrogen dissolved in water, such as nitrite-nitrogen and nitrate-nitrogen, was not determined. It was considerd that nitrogen in moat water was supplied not only from the ground water but also from the bottom sediment. Phosphate in algae increased in summer and was found a little in other seasons. It was suggested that phosphate in the moat water was supplied only from the ground water.
公益社団法人日本薬学会の論文
1977-08-31