著者

西野 貴裕 加藤 みか 宮沢 佳隆 東條 俊樹 市原 真紀子 浅川 大地 松村 千里 羽賀 雄紀 吉識 亮介 長谷川 瞳 宮脇 崇 高橋 浩司 片宗 千春 下間 志正

出版者

一般社団法人 日本環境化学会

雑誌

環境化学 (ISSN:09172408)

巻号頁・発行日

vol.30, pp.37-56, 2020 (Released:2020-02-19)

参考文献数

56

被引用文献数

1 2

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Quantitative analysis of pharmaceuticals and personal care products (PPCPs) in three environmental medias (air, water, and sediment) were carried out via a network of regional environmental research institutes in five large cities (Tokyo, Nagoya, Hyogo, Osaka, and Fukuoka) in Japan. The study took place from FY2016 to FY2018 as a part of a risk assessment for aquatic organisms. Analysis data of water samples from the five cities were carried out at the Tokyo Metropolitan Research Institute for Environmental Protection. The risk assessment for aquatic organisms was carried out by comparing the sample data with the predicted no-effect concentrations (PNECs) gathered from various sources. Concentration levels of five chemicals (clarithromycin, erythromycin, diclofenac, carbamazepine, and triclosan) exceeded the PNECs in several water samples. Concentrations of antibiotics, such as clarithromycin, and antihistamines, such as fexofenadine, tended to be higher during January to February than during June to August. In contrast, concentrations of insect repellents such as N, N-diethyl-m-toluamide (DEET) tended to be higher during June to August than during January to February. The discharge sources of these chemicals would be effluents from plants, such as sewage treatment plants, that were not completely treated. Estimated PPCPs loads accumulated by inflow data of Tamagawa river were compared with measured load value in this study. For some of these chemicals, such as fexofenadine and diclofenac, estimated loads did not coincide with measured loads at sampling points along the Tamagawa River. These differences were thought to occur as the consumption of fexofenadine increased rapidly during the research period, and diclofenac photodegraded while flowing down the river.

著者

市原 真紀子 西尾 孝之

出版者

Japan Society on Water Environment

雑誌

水環境学会誌 (ISSN:09168958)

巻号頁・発行日

vol.34, no.12, pp.183-189, 2011

被引用文献数

1

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Alの高濃度化や不純物の精製など,改良を加えた浄水汚泥からの凝集剤回収法について検討し,そのリン除去能を検証した。回収凝集剤(再生バンド)のAl<SUB>2</SUB>O<SUB>3</SUB>濃度は0.75~9.4%であり,一部はJISに定めるAl濃度を満足していた。含水率の低い浄水汚泥を用いると,よりAl濃度の高い再生バンドを作成可能であったが,同時に不純物の高濃度化が見られた。再生バンドはT-NやT-P,Fe,Mnを高濃度含んでいたが,精製処理によりT-P以外は43.6~76.5%除去され,Alの低濃度化や鉄・マンガンの濃縮といった既報における欠点を一定克服した。モデル排水(T-P 0.85 mg・L<SUP>-1</SUP>)や地下水(T-P 1.14~1.52 mg・L<SUP>-1</SUP>)を用いたジャーテストにおいて,再生バンドは市販の硫酸バンドと同等のリン除去能を示し,1:5(PO<SUB>4</SUB><SUP>3-</SUP>:Al)のモル比で9割以上のリンが除去された。