Sandor Z, Csengeri I, Oncsik M B, Alexis M N, Zubcova E
Research Institute for Fisheries, Aquaculture and Irrigation, 5541 Szarvas, POB 47, Hungary.
Environ Sci Pollut Res Int. 2001;8(4):265-8. doi: 10.1007/BF02987404.
The trace metal concentrations in water, sediment and aquatic organisms, such as fish, could indicate the level and tendency of the pollution. This is important not only for the protection of the environment, but for evaluation of the quality of fish meat either captured from natural waters or cultured in fishponds. The total trace metal concentrations in samples of fish from different regions of Hungary and from different species have been determined by using an X-ray fluorescence technique (EDXRF). Water, sediment and fish samples from fishpond systems with different feeding and stocking has also been analyzed. In the case of zinc contents, differences have been traced between the cultured and wild common carp. In the case of common carp reared under different feeding conditions, differences were also observed in the zinc concentration. The retention of the trace metals in the fish has been studied by measuring the levels in sediment, water and feed. The different retention can be explained by the different availability of zinc in the applied feeds, which can be related to the presence of different metal species in the feeds.
水、沉积物以及鱼类等水生生物中的痕量金属浓度可以表明污染的程度和趋势。这不仅对于环境保护很重要，而且对于评估从天然水域捕获或在鱼塘养殖的鱼肉质量也很重要。利用X射线荧光技术（能量色散X射线荧光光谱法）测定了匈牙利不同地区、不同种类鱼类样本中的痕量金属总浓度。还对不同投喂和放养方式的鱼塘系统中的水、沉积物和鱼类样本进行了分析。就锌含量而言，已发现养殖的普通鲤鱼和野生普通鲤鱼之间存在差异。在不同投喂条件下饲养的普通鲤鱼中，也观察到了锌浓度的差异。通过测量沉积物、水和饲料中的含量，研究了鱼类对痕量金属的保留情况。不同的保留情况可以通过所用饲料中锌的不同有效性来解释，这可能与饲料中不同金属种类的存在有关。
