Klavins M, Potapovics O, Rodinov V
Department of Environmental Science, University of Latvia, Raina Blvd. 19, Riga 1586, Latvia.
Bull Environ Contam Toxicol. 2009 Jan;82(1):96-100. doi: 10.1007/s00128-008-9510-x. Epub 2008 Aug 15.
The purpose of this study was to evaluate the level of heavy metal contamination of perch (Perca fluviatilis) from inland waters in Latvia. The level of metal (Cd, Cu, Co, Pb, Ni, Mn, Zn, Fe) accumulation in fish tissues (muscle, liver, and gills) relative to contamination level, gender, age, and tissue type were studied in fish samples from 14 bog (dystrophic) lakes and 23 lakes of different trophic status. Samples from some sites in the vicinity of the largest cities had significantly increased metal levels. In contrast, fish tissues from bog lakes had very low metal levels, possibly because of the high concentrations of natural organic matter in these waters.
本研究的目的是评估拉脱维亚内陆水域鲈鱼（河鲈）的重金属污染水平。在来自14个沼泽（营养不良）湖泊和23个不同营养状态湖泊的鱼类样本中，研究了鱼类组织（肌肉、肝脏和鳃）中金属（镉、铜、钴、铅、镍、锰、锌、铁）的积累水平与污染水平、性别、年龄和组织类型的关系。一些大城市附近地点的样本金属含量显著增加。相比之下，沼泽湖泊中的鱼类组织金属含量非常低，这可能是因为这些水域中天然有机物浓度较高。
