Chemical Composition of Wet Precipitation in Irbid, Jordan |
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Authors: | I F Al-Momani K A Momani Q M Jaradat |
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Institution: | (1) Chemistry Department, Yarmouk University, Irbid, Jordan;(2) Chemistry Department, Mu'tah University, Al Karak, Jordan |
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Abstract: | Rainwater samples were collected in Irbid city using 24 hour sampling periods from December 1996 to April 1998. All samples were analyzed for major cations (Na+, K+, Ca2+ and Mg2+), major anions (Cl–, NO3
– and SO4
2–) and pH. High levels of Ca2+ and SO4
2– were observed. Together, Ca2+ and SO4
2– made up more than 52.4% of the total ion mass, while Ca2+ alone contributed over 39.0% of the total cation. The majority of the rain samples collected had pH values higher than 5.6. The average pH was 6.4±0.9. High values of pH are attributed to the neutralization by natural alkaline local dusts which contain large fractions of calcite. Correlation and mineralogical analyses indicated that Ca2+, K+ and fractions of Na+, SO4
2– and Mg2+ are of crustal origin. Results of the present study suggested that the atmospheric composition in the city is strongly influenced by natural sources rather than anthropogenic. |
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Keywords: | chemical composition precipitation acidity neutralization mineralogical analysis Jordan |
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