Motegi Mamoru, Nojiri Kiyoshi, Hosono Shigeo, Kawamura Kiyoshi
Center for Environmental Science in Saitama, 914 Kamitanadare, Kisaimachi Kitasakitamagun, Saitama 347-0115, Japan.
Environ Sci. 2007;14(3):109-28.
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 is 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 microg/L, from 1.0 to 22.4 microg/L, and from 0.6 to 8.5 microg/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 NP, NPnEOs and NPmECs ranged from 69 to 10,747 microg/kg dry weight (dw), from 74 to 6,101 microg/kg dw, and from 24 to 673 microg/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.
在鸭川河（一条典型的城市河流，已知已受到壬基酚污染）的四个采样点，季节性地测定了河水和沉积物中壬基酚（NP）、壬基酚聚氧乙烯醚（NPnEOs：n = 1 - 15）和壬基酚聚氧乙烯醚乙酸（NPmECs：m = 1 - 10）的浓度。在水中，NP、NPnEOs和NPmECs的浓度分别为0.13至3.65微克/升、1.0至22.4微克/升和0.6至8.5微克/升。水中主要成分是NP、壬基酚单乙氧基化物（NP1EO）、壬基酚二乙氧基化物（NP2EO）、壬基酚聚氧乙烯醚乙酸（NP1EC）和壬基酚单乙氧基乙酸（NP2EC）。在沉积物中，NP、NPnEOs和NPmECs的浓度分别为69至10747微克/千克干重（dw）、74至6101微克/千克dw和24至673微克/千克dw。沉积物中的主要成分是NP、NP1EO和NP2EO。河水和沉积物中NP、NPnEOs和NPmECs的总浓度在冬季和春季高于夏季和秋季。在河水中，NP、NP1EO、NP2EO、NP1EC和NP2EC的总和与整个壬基酚类化合物的浓度比与水温相关。调查结果表明，一些壬基酚类化合物的点源排放位于第一个采样点和第二个采样点之间的流域内。
