| ■ ID | 907 |
| ■ 種類 | 論文 |
| ■ タイトル | Seasonal Changes in Nonylphenol Ethoxylates and Their Metabolites in Water and Sediment of Urban River Polluted by Nonylphenol |
| ■ 著者 |
Mamoru Motegi
埼玉県環境科学国際センター Kiyoshi Nojiri 埼玉県環境科学国際センター Shigeo Hosono 埼玉県環境科学国際センター Kiyoshi Kawamura 埼玉県環境科学国際センター |
| ■ 出版元 | |
| ■ 出版年 | 2007 |
| ■ 誌名・巻・号・年 | Environmental Sciences, Vol.14, No.3, 109-128, 2007 |
| ■ 抄録・要旨 | NPで汚染された都市河川である鴨川において、河川水と底質のノニルフェノール（NP）、ノニルフェノールエトキシレート（NPnEOs, n=1-15）、ノニルフェノキシ酢酸類（NPmECs, m=1-10）の濃度を季節ごとに調べた。河川水のNP、NPnEOs、NPmECs濃度は、それぞれ0.13-3.65μg/L、1.0-22.4μg/L、0.6-8.5μg/Lの範囲であった。河川水では、NP、NP1EO、NP2EO、NP1EC、NP2ECの割合が高く、ノニルフェノール化合物濃度（NP、NPnEOs、NPmECsの合計濃度）に対するこれらのエトキシ基の短い化合物の割合は、水温の上昇に伴って高くなった。底質のNP、NPnEOs、NPmECs濃度は、それぞれ69-10,474μg/kg dry weight (dw)、74-6,101μg/kg dw、24-673μg/kg dwの範囲であった。底質では、NP、NP1EO、NP2EOの割合が高かった。河川水と底質のノニルフェノール化合物濃度は、冬と春に高く、夏と秋に低い傾向が見られた。鴨川上流部でノニルフェノール化合物濃度が増加する区間を特定した。 The concentrations of nonylphenol (NP), nonylphenol ethoxylates (NPnEOs: n = 1-15) and nonylphenoxy acetic acids (NPmECs: m = 1-10) in river water and sediment were determined seasonally at four sampling sites in the Kamo River, which was a typical urban river and was already known to be polluted by NP. In the water, the concentrations of NP, NPnEOs and NPmECs ranged from 0.13 to 3.65 μg/L, from 1.0 to 22.4 μg/L, and from 0.6 to 8.5 μg/L, respectively. NP, nonylphenol monoethoxylate (NP1EO), nonylphenol diethoxylate (NP2EO), nonylphenoxy acetic acid (NP1EC) and nonylphenol monoethoxy acetic acid (NP2EC) were predominant in the water. In the sediment, the concentrations of these compounds ranged from 69 to 10,747 μg/kg dry weight (dw), from 74 to 6,101 μg/kg dw, and from 24 to 673 μg/kg dw, respectively. NP, NP1EO and NP2EO were predominant in the sediment. The total concentrations of NP, NPnEOs and NPmECs in both river water and sediment were higher in winter and spring than in summer and autumn. In the river water, the ratio in concentration of the sum of NP, NP1EO, NP2EO, NP1EC and NP2EC to the whole nonylphenolic compounds was correlated with water temperature. The surveyed results suggested that some point emission sources of nonylphenolic compounds were located in the river basin between the first sampling site and the second sampling site. |
| ■ キーワード | nonylphenol, nonylphenol ethoxylates, nonylphenoxy acetic acids, urban river, seasonal changes |
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