Karlog O, Elvestad K, Clausen B
Nord Vet Med. 1983 Dec;35(12):448-51.
In an examination of 50 Danish common eiders, the liver and kidney content of cadmium, copper, lead and mercury was determined. Eiders were chosen for analysis, because this species feed almost exclusively on the common mussel (Mytilus edulis), which is known to accumulate heavy metals. The concentrations recorded of cadmium, copper, and mercury were lower than what is usually regarded as toxic for birds, except for one eider which carried more than 2000 mg copper/kg liver tissue (dry weight). Of the 42 eiders analysed for lead, four had toxic levels, i.e., more than 7 mg per kg liver wet weight, and two other had increased levels, i.e., 3-7 mg lead per kg liver wet weight. The mean Cd concentration was 3.3 mg/kg liver (ww). This means that by consumption of ab. 160 gram liver from the common eider, the weekly tolerable intake of cadmium suggested by FAO/WHO would be exceeded.
在对50只丹麦普通绒鸭的检测中，测定了其肝脏和肾脏中镉、铜、铅和汞的含量。选择绒鸭进行分析，是因为该物种几乎只以常见贻贝（紫贻贝）为食，而贻贝已知会积累重金属。所记录的镉、铜和汞浓度低于通常认为对鸟类有毒的水平，但有一只绒鸭肝脏组织（干重）中铜含量超过2000毫克/千克。在分析铅含量的42只绒鸭中，有4只达到有毒水平，即肝脏湿重每千克超过7毫克，另有2只铅含量升高，即肝脏湿重每千克为3至7毫克铅。镉的平均浓度为3.3毫克/千克肝脏（湿重）。这意味着，食用约160克普通绒鸭的肝脏，就会超过粮农组织/世界卫生组织建议的镉每周耐受摄入量。
