Thermodynamic Study of the Extraction of Inorganic Mercury Compounds in Fish Species of the International Anzali Wetland, Iran  

作　　者：Astani, Elahe Vahedpour, Morteza Dolatyari, Leila 

机构地区：[1]Chemistry Department, Zanjan University, Zanjan, Iran [2]Department of Chemistry, Islamic Azad University, Zanjan Branch, P.O. Box 49195-467, Zanjan, Iran

出　　处：《Chinese Journal of Chemistry》2011年第7期1341-1346,共6页中国化学（英文版）

摘　　要：Inorganic mercury concentration was measured in the tional Anzali Wetland ecosystem in Guilan. In the same muscle tissues of four types of fish in the aquatic intemaecosystem, the northern pike is able to concentrate inorganic mercury in its body more than other fish. In each species, a fish with the highest amount of inorganic mercury was selected for determination of thermodynamic parameters of inorganic mercury extraction using calculation of the equilibrium constant and fitting of In Kc versus inverse temperature at the atmospheric pressure. The origins of thermodynamic parameters were discussed. The extraction processes were done in the range of temperatures from 331.15 to 365.15 K and at atmospheric pressure. Results show that the extraction of mercury compounds from SH groups of sulfhydryl proteins in fish muscle tissue is an endothermic process with a positive value for entropy and Gibbs free energy changes at room temperature.Inorganic mercury concentration was measured in the tional Anzali Wetland ecosystem in Guilan. In the same muscle tissues of four types of fish in the aquatic intemaecosystem, the northern pike is able to concentrate inorganic mercury in its body more than other fish. In each species, a fish with the highest amount of inorganic mercury was selected for determination of thermodynamic parameters of inorganic mercury extraction using calculation of the equilibrium constant and fitting of In Kc versus inverse temperature at the atmospheric pressure. The origins of thermodynamic parameters were discussed. The extraction processes were done in the range of temperatures from 331.15 to 365.15 K and at atmospheric pressure. Results show that the extraction of mercury compounds from SH groups of sulfhydryl proteins in fish muscle tissue is an endothermic process with a positive value for entropy and Gibbs free energy changes at room temperature.

关 键 词：MERCURY EXTRACTION THERMODYNAMIC Anzali wetland THERMOCHEMISTRY 

分 类 号：O414.1[理学—理论物理] P931.7[理学—物理]