Study of Environmental Chemistry and Therapeutic Properties of Ramsar Thermal Spring and Radiations from Thermal Springs of the Area on the Residents

摘要

There are many thermal springs in Ramsar area located in north of Iran, having therapeutic properties for high concentration of sulfate, calcium, and radon.. Quaternary and Alluvium deposits are exposed and extending on the Jurassic formations In Ramsar plain and Is composed of fan and debris deposits and have thickness lower than 10 m in show springs. The annual precipitation in the Ramsar region is 976 mm. Khazar fault is normally and longest fault In south of Caspine sea, and has NW- SE trend, in junction locally fault with NS trend and khazar fault thermal waters issue through these faults. There are increasing of usage of natural resources due to the population growth rate and convenient instruments used In everyday life. So there will be serious problems on sustainabllity and environment. They have been used for several years for treatment of diseases such as Rheumatism, Dermatologic and digestive complications. On the other hand, Ramsar is one of residential areas of the world which has naturally high radiations (HLNRA) (High Level Natural Radiation Area). In this regard, Yangjiang In China, Kerala in India and Guarpari in Brazil are some cases to be mentioned. In Ramsar area, the amount of annual radiation is 260mGy y~(-1) while the radiation rate is 10Gy y~(-1) for Its 2000 population. Such radiation can be due to high radium rate in available thermal springs, rocks and soil of Ramsar area. For the presence of such thermal springs in the area and usage of radiating rocks in residential and administrative buildings, settlers In the area are subjected to radiations from radium and isotopes caused by destruction of radium as well as high rate of radon (more than 1000 MBqm~(-3)). Some believe that there is a linear, no-threshold relation between radiation rate and carcinogenic effects, while no such effect has been definitely found yet in Ramsar area and all HNLRA areas. Therefore, more and thorough studies are required on the subject to fill in the gaps. The present research deals with the relationship between natural radiations of the springs and radiating materials used In buildings with different diseases and therapeutic and healing effects of Ramsar thermal springs.