EVALUATION OF PETROLEUM HYDROCARBONS IN GROUNDWATER PLAINS CITY OF BANDAR ABBAS

The issue of contamination of underground waters by chemicals such as oil hydrocarbons which is originated from contaminating sources and origins is inevitable. From among oil contaminants can one refer to oilwells, underground and ground reservoirs of oil products and or oil transfer pipes. Although leakage rarely happensin the reservoirs, this can have a great impact on the quality of the underground water. In this research carried out from March to October 2007, sampling operations were randomly done on 31 water wells of the villages on the plain of Bandar Abbas (Sarkhoon, Shamil Ghaleh Quazi, Isin, Kahoorestan, Rezvan, Sarzeh, Fin and Gohreh). To measure TPH sampling from agricultural water wells was made on the basis of ASTM D3921 by Spectrofluorophotometry. The result showed that the most amount of TPH in Gohreh plain was 0.0032ppm and the least amount: 0.0012 ppm in Rezvan plain. A comparison on the average results on oil substances in four political divisions (Shamil, Ghaleh Ghazi, Central,Fin) showed that the most amount of TPH exist in Fin for 0.0020 ppm and the least amount belongs to central division for 0.0013 ppm. The map 1/1000000 of the city of Bandar Abbas was divided into 4 regions: region 2 with the most amount of TPH for 0.0020ppm and region 4 with the least amount for 0.0014ppm. The main cause of TPH density in Gohreh plain which is situated at Fin division and region 2 can be the vicinity of the static level of underground waters to the ground level and the vicinity of sampling area to the pumping station of oil substances in Ghotb Abad area. According to the research it became obvious that amount of oil substances in the under ground waters of the city of Bandar Abbas stands lower than standard level but due to the population growth and the increase in contaminating origins the issue of the underground contamination due to oil products is of highly concern and significant so this requires the concerned organizations and companies to do constant measurement in this regard.

کلیدواژه ها:

TPH ، contaminating sources and origins ، plain ، underground water ، the city of Bandar Abbas