STUDY SOME PROPERTIES OF LOCAL AND STORM DUST PHENOMENA IN BAGHDAD CITY
Keywords:Storm dust, local dust, properties, magnitude, dust occurrence, correlation coefficient.
This investigation has been conducted to study some properties of local storm dust phenomena in Baghdad city. The monthly average of dust (g/m²) in Baghdad range from 10.2 g/m² in Nov. to 43.7 g/m² in April.
The local dust has a high Aerobic bacteria total count (Abtc) and O.M (% ) compare to the storm dust. This may be due to the contamination of dust particularly the local dust.
The correlation coefficients between Abtc (No./100ml) Organic Matter (O.M)% and EC mmhos/cm, PH, Ca%, Mg%, Na meq/100g, Na meq/100 g, K meq/100 g and dust, g/m² have been done. The results indicate high relationships between Abtc ( No./ 100ml) Organic matter (O.M)%. The local dust (x) has high relationships with Abtc and O.M (% ) as examples. These have the follow Equation s:
1. O.M. % = 3.805 - 0.054 X, r = 0.9534, describe the relation between O.M % and the studied local dust(x).
2. Abtc NO. = -8.725E2 + 56.623 X, r = 0.7733, describe the relation between Abtc NO. and the studied local dust(x). The local dust samples are more contaminated compare to the storm dust samples in the city.
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