Faculty of Applied Life Sciences, Niigata University of Pharmacy and Applied Life Sciences, 265-1 Higashijima, Niigata, Niigata 956-8603, Japan.
Bull Environ Contam Toxicol. 2012 Oct;89(4):764-9. doi: 10.1007/s00128-012-0792-7. Epub 2012 Aug 21.
Characteristic distributions of Al, Mn, Fe, Ni, Zn, and Pb were investigated in the surface sediments of a small river (Niitsu River) flowing through both urban and agricultural areas, along with comparison with those from the upper main stream (Nodai River). The mean compositions of the most mobile metals were ordered as Zn = Mn > Ni = Pb = Fe > Al in the Niitsu River. They were Mn = Zn = Pb = Fe > Ni = Al in the Nodai River. Mn, Fe, Ni, and Zn in the Niitsu River showed higher compositions of mobile (2.9%-36%) and oxidizable (6.6%-16%) phases than those in the Nodai River. The Ni and Zn in the Niitsu River also had higher reducible phase composition (15% and 16%, respectively). In the Niitsu River, Pb had the higher oxidizable composition (29%). Over 90% of Al was in the lithogenic phase in the two rivers.
研究了流经城市和农业区的小河（仁井川）和上游干流（永代川）表层沉积物中 Al、Mn、Fe、Ni、Zn 和 Pb 的特征分布，并进行了比较。仁井川中最具迁移性的金属的平均组成顺序为 Zn = Mn > Ni = Pb = Fe > Al。而在永代川中则为 Mn = Zn = Pb = Fe > Ni = Al。仁井川中的 Mn、Fe、Ni 和 Zn 具有更高的可移动（2.9%-36%）和可氧化（6.6%-16%）相组成，高于永代川。仁井川中的 Ni 和 Zn 也具有更高的可还原相组成（分别为 15%和 16%）。在仁井川中，Pb 具有更高的可氧化相组成（29%）。两条河流中超过 90%的 Al 都存在于成岩相中。
