Comprehensive assessment of harmful heavy metals in contaminated soil in order to score pollution level

Abstract

Soil-related problems have grown up to be a major threat to human society. Scientific evaluation is helpful to understand the status of soil pollution and provide reference to further work. In this situation, Liaoning Province, a typical industrial and agricultural province in Northeast China, was selected as a case study region. It reviewed 200 studies published between 2010 and 2020 and recorded related data of soil heavy metal. It used model method and index method to evaluate the agricultural region. The comprehensive assessment score of Liaoning pollution level was 0.8998. Dalian was 0.9536, ranking first among the 14 cities. Huludao and Jinzhou were 0.7594 respectively, ranked the last. Heavy metal accumulation in different cities stemmed from different sources, including weathering of parent materials, industrial wastes, sewage irrigation, and mining activities. In general, the pollution level of heavy metal in Liaoning was at low risk level, but it still needs to pay attention to the health risk of heavy metal and the input of heavy metal into the soil, especially cadmium (Cd). This study provides a comprehensive assessment of soil heavy metal pollution in Liaoning, while identifying policy recommendations for pollution mitigation and environmental management.

Copper and cadmium content in Polish soil: Analysis of 25‐year monitoring study

“…Heavy metal pollution poses a serious threat to human health because of the high toxicity, environmental mobility, accumulation in the food chain, and lack of biodegradability of heavy metals (Fei et al, 2022; Szymańska‐Pulikowska et al, 2023; Wdowczyk & Szymańska‐Pulikowska, 2022). In addition, heavy metals persist long term in soil environment and can adversely affect soil fauna and flora through soil–microbial interactions and microbial processes (Kumar et al, 2019; Zhao et al, 2022). Heavy metals are a persistent stress that threatens the local ecosystem; studies have shown their impact on changes in microbial metabolic activity, population diversity, and soil microbiome abundance (Qian et al, 2023; Yang et al, 2022).…”

Adsorption Behavior of Heavy Metal Ions by Hybrid Inulin-TEOS for Water Treatment

“…Mining, textiles, paper, fertilizer, painting, and petroleum refining industries are considered the main drivers of industrial growth that contribute to the economy and enhance human well-being. Nonetheless, adverse industrial practices have heightened concerns related to water pollution since they are one of the primary contributors to heavy metal ion pollution in water bodies [1][2][3]. In order to avoid the contamination of public streams and water resources, heavy metals are only allowed to be disposed of in extremely low amounts in wastewater effluent.…”

Remediation of Cadmium Stress in Strawberry Plants Using Humic Acid and Silicon Applications

“…Biotic and abiotic stresses are the major constraints in agriculture, and many metabolic and physiological changes occur in plant species under these conditions [1,2]. Heavy metals, such as chromium, cadmium, arsenic, lead, mercury, zinc, nickel and copper, are common pollutants in soils, are biologically toxic and could persist long-term in the soil environment [3][4][5]. The soil in various agricultural regions has been partially contaminated with heavy metals, resulting in the reduced availability of farmland [6][7][8].…”