Elements in surface and well water from the central North China Plain: Enrichment patterns, origins, and health risk assessment.

Elements in surface and well water from the central North China Plain: Enrichment patterns, origins, and health risk assessment. Environ Pollut. 2019 Dec 06;258:113725 Authors: Long J, Luo K Abstract The principal aim of this study was to understand the enrichment patterns of elements in water from typical coal mine and irrigation areas. For this study, samples of surface water, shallow water, and deep water were collected from Handan, Jining, and Heze cities and their surrounding areas in the central North China Plain. The results showed that the hydrochemical characteristics were dominated by Ca-Mg-Cl and Ca-HCO3. Elements in the studied surface water, including strontium, iron and boron, were anomalously enriched at levels more than 654, 294 and 134 times their global river water averages, respectively. The concentrations of elements in the studied area were influenced by both natural processes and anthropogenic sources, but the dominant origins of the anomalous enriched elements were bedrock weathering and soil leaching. The deep well water quality in the Handan coal mining area was good, while the poor-quality water samples in the study area were mainly distributed in the alluvial plain, which is characterized by Neogene-Quaternary sediments and aquifers. The measured hazard quotient and hazard index values indicate that the arsenic and nickel in the studied samples could pose a noncarcinogenic risk to the health of local reside...
Source: Environmental Pollution - Category: Environmental Health Authors: Tags: Environ Pollut Source Type: research