| Abstrakt: |
Variations of black carbon concentration and its sources identification were studied in Ar-Ramtha District, north of Jordan, using the aetlalometer model AE33. Measurements at six sites showed that the black carbon concentrations almost have the same behavior due to the uniform nature of the region. The average value of the black carbon concentration in the six sites was 1778 ng/m³, 2288 ng/m³, 1605 ng/m³, 1785 ng/m³, 2267 ng/m³, and 2606 ng/m³ respectively. Analysis of the measurements and Angstrom exponents, pre-calibrated in the instrument, revealed the ability of these variations to apportion black carbon from its sources. The largest contribution of black carbon was from fossil fuels at all sites. The absorption coefficients for each wavelength were measured at all sites. For a wavelength of 370 nm, it was discovered that the absorption coefficient had a maximum value of 58. 27Mm-1 while it it was 20.25 Mm-1 at 880 nm. In all sites, the average absorption coefficients reached their highest value at a wavelength of 370 nm, demonstrating the inverse relationship between wavelength and absorption coefficient. [ABSTRACT FROM AUTHOR] |
