Cu, Pb, Zn,Cr and Cd concentrations in indoor dust in HadithaCity, Western Iraq, measured by washing with EDTANa2 - organic acid

Abstract

In recent years, society's awareness of the presence of heavy metals in home dust has increased. Many cities have various levels of metal in their dust as a result of different regional pollution sources. Heavy metals are generated by both natural and man-made processes. The amount of heavy metals and minerals in the atmosphere is influenced by natural processes such as soil erosion, forest fires, volcanic eruptions, rock fracturing, dust, and forest fires. The sources of heavy metals in household dust include anything that people use or do in their houses, such as heaters, consumer products, building materials, and furniture. They also include activities like indoor smoking and incense burning, the color of the wall paint, as well as the entry of outside pollutants.In order to measure the levels of heavy metals ,the artificial chelating substance ethylenediaminetetraacetic acid disodium (EDTA) and low-molecular-weight organic acids (citric acid, oxalic acid, and tartaric acid) were chosen as the washing reagents. The washing solution utilized in the current study is made up of a mixture of (0.4 M) tartaric, oxyalic, and cetric organic acids and (0.2 M) EDTA. In accordance with the findings, the average amounts of these heavy metals in indoor dust were as follows: Zn (24.10± 15.93 mg/kg), Pb (19.52 ±14.74 mg/kg), Cr(8.73± 3.00 mg/kg), Cu (5.95 ±3.46 mg/kg), and Cd (3.25± 1.24 mg/kg).