Department of Biochemistry, Microbiology and Physics, Agriculture Faculty, Trakia University, 6000 Stara Zagora, Bulgaria.
Department of Biology and Aquaculture, Agriculture Faculty, Trakia University, 6000 Stara Zagora, Bulgaria.
Int J Environ Res Public Health. 2022 Aug 4;19(15):9600. doi: 10.3390/ijerph19159600.
The purpose of this review is to describe the contents of Pb and Zn in sediments and hydrobionts as ecological markers for the pollution assessment of freshwater objects in Bulgaria, and the data are compared with other countries and regions. Symmetry was found regarding the levels of Zn in the sediment of the Ovcharitsa and Zhrebchevo dams, which were twice the MAC for arable land (Regulation № 3 of Bulgarian legislation). Symmetry was also observed between the results for Zn and Pb in the studied sediments, and the "favorites" in terms of content were the samples from Zhrebchevo Dam and, especially, from Ovcharitsa Dam. Asymmetry was established in the accumulation of Zn in the livers of carps inhabiting Topolnitsa Dam in comparison with these in Ovcharitsa Dam. A similar asymmetry was observed for lead. The analysis of the muscles and livers of the studied fish showed an asymmetry in the accumulation of zinc, and this process was more intense in the liver. Symmetry was found in the accumulation of Pb in the liver and muscle tissues of the carp from the studied water bodies.
本综述的目的是描述保加利亚淡水物体污染评估中沉积物和水生生物中 Pb 和 Zn 的含量，这些数据与其他国家和地区进行了比较。奥瓦恰里察和日夫切沃大坝沉积物中 Zn 的水平存在对称性，是可耕地 MAC 的两倍（保加利亚法规第 3 号）。研究沉积物中 Zn 和 Pb 的结果之间也存在对称性，含量“偏好”的是日夫切沃大坝和奥瓦恰里察大坝的样本。与奥瓦恰里察大坝相比，栖息在托波尔尼察大坝的鲤鱼肝脏中 Zn 的积累存在不对称性。铅也存在类似的不对称性。对研究鱼类的肌肉和肝脏的分析表明，锌的积累存在不对称性，且该过程在肝脏中更为强烈。在研究水体中鲤鱼的肝脏和肌肉组织中 Pb 的积累存在对称性。
