提出了金属铝(Al)的修订水质指导值(WQGV),镓(Ga)和钼(Mo)在接收海洋环境。这些元素通常在氧化铝精炼厂废物流中的高浓度中发现,然而,目前的WQGV未能准确评估环境风险。这里,我们在几年的过程中产生的慢性生物效应数据与公开文献中的毒性数据相结合,以构建物种敏感性分布(SSD),从而可以计算Al的修订WQGV,海洋环境中的Ga和Mo。这些程序符合国际推荐的推导程序,新计算的WQGV可以纳入旨在可持续开发环境资源和持续保护海洋产业的监管框架。如果可用的数据集允许这种区分,为温带和热带环境建造了单独的SSD,并衍生了特定区域的WQGV。从SSD推断,建议在温带和热带接收环境中实施56μgAlL-1,800μgGaL-1和3.88mgMoL-1(在0.45μm过滤部分中)的WQGV,以实现95%的物种保护。目前,没有足够的验证来区分热带和温带数据,在大多数情况下,建议应用通用WQGV。
Revised water quality
guideline values (WQGVs) are presented for the metals aluminium (Al), gallium (Ga) and molybdenum (Mo) in receiving marine environments. These elements are commonly found in elevated concentrations in alumina refinery waste streams, yet current WQGVs fail to accurately assess the environmental risk. Here, chronic biological effects data we have generated over the course of several years were combined with toxicity data from the open literature to construct species sensitivity distributions (SSDs) which enabled the computation of revised WQGVs for Al, Ga and Mo in marine environments. These procedures are in accordance with internationally recommended derivation procedures, and newly computed WQGVs may be incorporated in regulatory frameworks aimed at sustainable exploitation of environmental resources and ongoing protection of the marine estate. Where the available datasets allowed such distinction, separate SSDs were constructed for temperate and tropical environments and zone-specific WQGVs derived. Extrapolated from the SSDs, WQGVs of 56 μg Al L-1, 800 μg Ga L-1 and 3.88 mg Mo L-1 (in the 0.45-μm filtered fraction) for 95% species protection were recommended for implementation in both temperate and tropical receiving environments. Currently, there is insufficient validation to separate the tropical from the temperate data and in most cases, application of the generic WQGVs is recommended.