Water Quality Section, Illinois State Water Survey, Box 697, 61652, Peoria, IL, USA.
Environ Monit Assess. 1990 Jan;14(1):45-58. doi: 10.1007/BF00394356.
The objective of this study was to use higher plants for detecting effluent toxicity. Eight effluent samples were obtained from three industrial sources prior to their entry into a sewer system. The tests were the duckweed reproduction test, and root growth tests using cabbage and millet. The results of repeated phytotoxicity tests were reproducible. Of the three industrial sources, the effluent samples from a specialty chemical industry were the most toxic. For two samples from this source, the IC50 values (the concentrations which caused 50% inhibitory effect) for duckweed were less than 1.6% effluent concentration. The samples from an agricultural product utilization plant were the least toxic. For these samples, root growth tests failed to obtain IC50 values while the duckweed tests showed IC50 values of 91 and 43% effluent concentration. Among the three types of tests conducted, the duckweed reproduction test showed the greatest sensitivity to effluent toxicity, while root growth tests using cabbage and millet had mixed results. Duckweed is recommended as a part of a battery of tests for effluent toxicity.
本研究旨在利用高等植物来检测废水毒性。在废水进入下水道系统之前，从三个工业源中采集了 8 个废水样本。测试使用了浮萍繁殖测试和白菜及小米根生长测试。重复的植物毒性测试结果具有可重复性。在这三个工业源中，来自特种化学品工业的废水样本毒性最强。对于该来源的两个样本，浮萍的 IC50 值（引起 50%抑制效应的浓度）低于 1.6%的废水浓度。来自农产品利用工厂的样本毒性最小。对于这些样本，根生长测试未能获得 IC50 值，而浮萍测试显示 IC50 值为 91%和 43%的废水浓度。在所进行的三种类型的测试中，浮萍繁殖测试对废水毒性最敏感，而使用白菜和小米的根生长测试结果则喜忧参半。建议将浮萍作为废水毒性综合测试的一部分。
