Hydrogeochemistry and lead contamination of groundwater in the north part of Esfahan province, Iran

Abstract

Geochemical and hydrogeochemical studies were conducted to assess the origin and geochemical mechanisms driving lead enrichment in groundwaters of semi-arid regions in Central Iran. In this study, 149 water samples were analyzed using inductively coupled plasma mass spectrometry (ICP-MS). Concentrations of Pb and As in about 68% and 27% of the samples, respectively, exceeded WHO guidelines. Analyzing the results of ICP-MS of parental rocks and aquifer sediments shows that unweathered volcanic rocks were the primary source for lead mobilizing to groundwaters.

Human Health Risk Assessment of Heavy Metals in Groundwater in the Luan River Catchment within the North China Plain

“…With the rapid industrialization, agriculturalization, and urbanization of the eastern portion of Hebei Province, a series of water problems have emerged, including severe water pollution and water shortages. The study area is located in the lower part of the Luan River catchment in the southeastern portion of Hebei Province and the northwestern region of the Bohai Sea and spreads between 39°30′-39°40′N in latitude and 118°50′-119°00′E in longitude and encompasses an area of approximately 150 km 2 (Figure 1).…”

“…Less than 3% of the Earth's water resources are freshwater, and only one-hundredth of a percent of this is adapted for human consumption [1]. Groundwater makes up 20% of the world's fresh water supply [2,3]. There is no doubt that groundwater plays a significant role in strengthening the economic growth of developing countries [2,4] and where it is also indispensable for drinking, domestic use, industry, and agriculture [5] and therefore directly or indirectly influences daily life.…”

“…Groundwater makes up 20% of the world's fresh water supply [2,3]. There is no doubt that groundwater plays a significant role in strengthening the economic growth of developing countries [2,4] and where it is also indispensable for drinking, domestic use, industry, and agriculture [5] and therefore directly or indirectly influences daily life. Groundwater is also an essential component of the ecological and geological environment and greatly impacts biological growth and human life [6].…”

“…Although some heavy metals (e.g., Cu, Mn, and Cr) are essential for humans, their presence in excess amounts may be toxic. In addition, other metals (e.g., As, Hg, Cd, and Pb) are highly toxic at very low concentrations with no known benefits for human health [2,[16][17][18]. The heavy metals mentioned above cannot be eliminated from aqueous systems and are often recycled via physiochemical and biological processes and continue to pose adverse risks to human health and aqueous ecosystems [19].…”

Experimental Research on Application of Yeast in Heavy Metal Removal From Polluted Water

“…Water can be contaminated with heavy metals (HM), petroleum products, detergents, radioactive isotopes, mineral or organic fertilizers (Pazand et al, 2018). Heavy metals can enter the environment through natural processes, such as volcanic eruptions or weathering of rocks (Motuza, 2013).…”