قياس تراكيز عناصر الرصاص و المنغنيز و النيكل في حواف طرق مدينة أربيل

الملخص EN

This study has addressed monitoring the change in the concentration of some heavy metals on the side of some of the main roads in Irbil city-North of Iraq.

Sixteen sites distributed on the main roads we selected for data collection.

The chosen main roads were the 60 m road situated in the city centre, the 100 m road (arterial road) and the peripheral road.

Soil samples were collected from the aforementioned sites for a period between December 2016 and February 2017.

The concentration of seven heavy metals namely Lead, Manganese, Chromium, Nickel, Copper, Zinc and Cadmium were measured in the samples along with the pH.

The study has shown that there was a noticeable change in the concentration of the heavy metals in the selected sites during the measurement period.

The observed changes can be summarised as follows: There was a pronounced and statistically significant change in the concentration of Lead in all the 16 sites during the period of data collection.

The concentration varied between 6.18 and 28.7 ppm.

The first road (the 60 m one) has the highest concentration of this metal (19 ppm), while month wise, December registered the highest concentration of 15.87 ppm.

The concentration of Manganese varied between 281.87 and 364.31 ppm for all the selected sites during the data collection period.

The first road had the highest concentration of this metal followed by the second road and then the third one.

Month wise, January registered the highest concentration of this metal followed by December then February, which was significantly different from the aforementioned months.

The collected data has also shown that the observed highest concentration of Nickel in this study was about 233.06 ppm.

The 100 m street had the highest average concentration of this metal whilst the peripheral road had the lowest.

December had witnessed the highest concentration of this metal among all the months of the study.