Abstract
Abstract: Spider webs were gathered from residential and industrial areas to found the order of heavy suspended metals in the air. The treatment of spider webs were done with nitric acid and digested by atomic absorption spectrophotometer before analysis (AAS). The average value of several heavy metals concentration were observed to be meaningfully great at p < 0.05 in suspended ingredients in industrial zones including, Cadmium (Cd) 0.15 ± 0.05 and Lead (Pb) 0.53 ± 0.09 µgg-1, respectively. The average values of concentration of Copper (Cu), Nickel (Ni) and Zinc (Zn) were not meaningfully changed from residential, industrial and control zones. It was observed that, the heavy metals concentration reduces when the web specimens were collected more away from the road.
Highlights
Controlling trace metals of street dust has prepared an instrument for approximating the contamination degree, habitat and source of industrial and residential commercial zones (Smith and Aust 1997, Trevarthen, Aitken et al 2006)
The goal of the current study is to evaluate the air quality in residential and industrial environment by spider webs as an index
The maximum Pb, Cd, Zn, Cu and Ni concentration respectively are 0.98, 0.42, 0.52, 0.03 and 0.05μgg-1, as documented from zones A, C, A, A, and B that are entire industrial zones (Table 1). This reality was more validated by the statistical analysis results that displayed that the Pb concentrations was meaningfully upper in spider web specimens gathered from industrial zones with the average value of 0.53 ± 0.09 μgg-1, though there was no important variance in the average values of Pb documented from control and residential zones (Table 2)
Summary
Controlling trace metals of street dust has prepared an instrument for approximating the contamination degree, habitat and source of industrial and residential commercial zones (Smith and Aust 1997, Trevarthen, Aitken et al 2006). Spider webs were gathered from residential and industrial areas to found the order of heavy suspended metals in the air. The average value of several heavy metals concentration were observed to be meaningfully great at p < 0.05 in suspended ingredients in industrial zones including, Cadmium (Cd) 0.15 ± 0.05 and Lead (Pb) 0.53 ± 0.09 μgg-1, respectively.
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