水质 水样对日本牡蛎（Magallana gigas）和蓝贻贝（Mytilus edulis 或 M. galloprovincialis）胚胎 幼体发育毒性的测定

[中文适用范围]： 本文件规定了评估化学和水样对海洋双壳类胚胎幼虫发育影响的方法。该方法可测定导致胚胎幼虫发育异常的浓度水平。本试验适用于盐度范围： — 贻贝为20至40 PSU（实用盐度单位）， — 牡蛎为25至35 PSU。 本文件中的方法适用于： — 化学物质和制剂， — 海洋和半咸水， — 只要调整盐度或限制稀释以符合上述盐度范围，即可适用于河流和水性废水（城市、农业、工业废水等）， — 沉积物和石油产品的水性提取物（孔隙水、洗脱液、浸出液和淋洗液）， — 以及污染沉积物或疏浚材料样品（见附录C）。 [外文原描述]： This document specifies a method for assessing the effects of chemical and aqueous samples on the embryo-larval development of marine bivalves. This method allows the determination of the concentration levels that result in an abnormality in embryo-larval development. This test is suitable for salinity ranges: — between 20 PSU (practical salinity unit) and 40 PSU for mussels, and — between 25 PSU and 35 PSU for oysters. This method in this document applies to: — chemical substances and preparations, — marine and brackish waters, — streams and aqueous effluents (urban, agricultural, industrial effluents, etc.) as long as the salinity is adjusted or dilution is limited so that the aforementioned salinity ranges are respected, — aqueous extracts (pore water, elutriates, eluates and leachates) from sediments and petroleum products, and — samples of contaminated sediment or dredged material (see Annex C).