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CHEMICAL, PHYSICAL CHARACTERISTIC AND HYDROCARBONS POLLUTANT IN TIGRIS RIVER (BAGHDAD | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 2014, Issue 2, 2009, Pages 0-0 | ||
| Authors | ||
| T. Y. F. Al-Khafagy; H. A. Ahmed; B. A. Al-Kaisy | ||
| Abstract | ||
| Petroleum hydrocarbons are one of the most important pollutant spilled to the main body of water in the Tigris River. The present study included the measurement of physical, chemical characteristic and oil hydrocarbons concentration and involved the selection of four stations of the river passing through Baghdad city from May 2003 to April 2004.Water temperature ranged from 14C during January and February 2004 in all stations to 29C during August 2003.Turbidity measurement ranged from 52.71+7.18–116.594 +16.74 NTU. Seasonal changes in turbidity showed significant differences. Values were high during January and April (raining period) and lower June, July and August. Electrical conductivity did not show seasonal changes during the study. Conductivity ranged from 754.722 + 11.34 to 1515.83 + 7.54 µs/cm. Results showed seasonal fluctuations is pH values. A higher pH value was recorded during November (8.79+0.14) and the lowest were during May7.6 + 0.13. Dissolved oxygen were lowest in station 2(7.57 + 0.19) mg/l and highest in station 1(8.77 + 0.17) mg/l. In addition as significant difference were found seasonally. Oxygen was highest during January (9.95 + 0.13) mg/l and lowest during July (6.95 + 0.23) mg/l. There was no regular pattern for both Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD). The range of COD was 8.76 + 0.46 – 132.98 + 14.89 mg/l and that for BOD was 1.77+0.12–27+2.97 mg/l. Concentration of petroleum hydrocarbons in these four stations indicated that it ranged from 0 to 54.3 + 3.23 mg/l. Seasonal changes in concentration of the petroleum hydrocarbon was highest during January 2004(46.08 + 10.16) mg/l and lowest during August 2003 (8.41 + 2.78) mg/l. | ||
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