Delaware River Basin Commission, 25 State Police Drive, West Trenton, New Jersey 08628, USA.
Integr Environ Assess Manag. 2011 Jul;7(3):466-77. doi: 10.1002/ieam.144. Epub 2011 Jan 25.
This study assessed ambient waters in an urbanized area of the Delaware River, to determine whether river water samples exhibited chronic lethal or sublethal toxicity when measured in laboratory experiments. Toxicity was assessed at 16 fixed stations in the main-stem river and 29 stations in tributaries of the tidal Delaware River with salinities from 0 to 15 parts per 1000 (ppt) using Pimephales promelas, Americamysis bahia, Menidia beryllina, and Ceriodaphnia dubia in 7-d tests; Pseudokirchneriella subcapitata in a 96-h test; and Hyalella azteca in a 10-d water-only test. The toxicity tests measured organism survival, growth, and reproduction. Results from testing water samples collected in 4 different y indicated that the samples from sites tested in the main-stem of the Delaware River and from the majority of its tributaries did not produce chronic toxicity. The surveys identified tributaries that warrant further assessment for toxicity.
本研究评估了特拉华河城市化地区的环境水，以确定当在实验室实验中测量时，河水样本是否表现出慢性致死或亚致死毒性。使用 Pimephales promelas、Americamysis bahia、Menidia beryllina 和 Ceriodaphnia dubia 在 7 天试验中，以及 Pseudokirchneriella subcapitata 在 96 小时试验中和 Hyalella azteca 在 10 天仅用水试验中，在干流的 16 个固定站和潮汐特拉华河的 29 个支流站（盐度从 0 到 15 份/千份）评估了毒性；毒性测试测量了生物的生存、生长和繁殖。对在 4 个不同年份采集的水样进行的测试结果表明，来自特拉华河干流和大多数支流站点测试的水样没有产生慢性毒性。调查确定了需要进一步进行毒性评估的支流。
