Abstract Metal release rates were measured from four different copper alloy-based materials used by the aquaculture industry: copper sheet machined into a diamond mesh, copper alloy mesh (CAM), silicon bronze welded wire mesh, and copper sheeting, and compared with conventional nylon aquaculture net treated with a cuprous oxide antifouling (AF) coating. Release rates were measured in situ in San Diego Bay using a Navy-developed Dome enclosure system at nine different time points over one year. As expected, copper was the predominant metal released, followed by zinc and nickel, which were fractional components of the materials tested. Release rates followed a temporal trend similar to those observed with copper AF coatings applied to vessel hulls: an initial spike in copper release was followed by a decline to an asymptotic low. Leachate toxicity was consistent with prior studies and was directly related to the metal concentrations, indicating the alloys tested had no additional toxicity above pure metals.

中文翻译：

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铜合金材料环境负荷估算

摘要 测量了水产养殖业使用的四种不同铜合金基材料的金属释放率：加工成金刚石网的铜片、铜合金网 (CAM)、硅青铜电焊网和铜片，并与常规尼龙进行比较。用氧化亚铜防污 (AF) 涂层处理的水产养殖网。使用海军开发的圆顶外壳系统在一年内的九个不同时间点在圣地亚哥湾原位测量释放率。正如预期的那样，铜是释放的主要金属，其次是锌和镍，它们是测试材料的部分成分。释放率遵循类似于在船体上应用铜 AF 涂层所观察到的时间趋势：铜释放的初始峰值随后下降到渐近低点。