Spatial distribution and ecological risk assessment of soil heavy metals in a typical volcanic area: Influence of parent materials

Gao, Jianweng; Gong, Jingjing; JianzhouYang,; Wang, Zhenliang; Fu, yangang; Tang, Shixin; Ma, Shengming

doi:10.1016/j.heliyon.2023.e12993

Cited by 9 publications

(4 citation statements)

References 30 publications

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“…The main areas with high Cr, Cu, and Hg concentrations were located in the northern part of Hainan (Figure 6). Similar results have been reported, where high concentrations of Cr and Cu in northern Hainan were attributed to parent materials in volcanic rock soil [23][24][25]46] . Hg was partitioned into two principal component axes (components 1 and 2), suggesting the existence of two main sources of Hg inputs in the investigated soils.…”

Section: Pca Of Soil Samplessupporting

confidence: 87%

“…At least eight volcanic eruptions can be discerned in the Quaternary volcanic rocks distributed on northwestern Hainan Island. Intense volcanic activity has formed basalt and basalt-based soils, which reportedly contain high background levels of heavy metal(loid)s [23][24][25] . Soils in the northwestern area are mainly derived from pyroclastic and basic volcanic rocks.…”

Section: Pollution Assessment and Spatial Pattern Of Soil Heavy Metal...mentioning

confidence: 99%

“…Numerous studies on metal accumulation in agricultural soils or crops have been conducted in Hainan [17][18][19][20][21][22][23][24][25][26] , it is a pity that lack of awareness with respect to agricultural activities and uncommon geogenic sources caused heavy metal pollution in the main crop production areas in Hainan, and this accumulation poses a risk to human health [23,25] . For example, several studies have reported the concentrations of Ni, Cr, and Cu in the cropland soils of Northern Hainan, where higher concentrations of heavy metal(loid)s are related to the mother rocks [22][23][24][25] . Studies have reported that As, Cd, Hg, and Pb in soils mainly originate from various anthropogenic sources [19,20] and groundwater in the industry-oriented western region is slightly contaminated with heavy metal(loid)s [27] .…”

Section: Introductionmentioning

confidence: 99%

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Heavy metal(loid)s in fruit-growing soils of tropical Hainan Island in China: Pollution, ecological-health risks, spatial assessment, and source analyses

Wu,

Zhou,

Xie

et al. 2023

International Journal of Agricultural and Biological Engineering

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Hainan Island is the most important tropical fruit production area in China. In this study, 372 soil samples and corresponding fruit and irrigation water samples were collected from Hainan orchards and analysed to determine the concentrations of six heavy metal(loid)s: Cd, Hg, As, Pb, Cr, and Cu. The pollution status, potential risks, possible sources, and spatial distribution patterns of soil heavy metal(loid)s were comprehensively investigated. The fruit and irrigation water samples had negligible amounts of heavy metal(loid)s, and the potential human health risk for fruit consumers was at a safe level. The heavy metal(loid) concentrations in most soil samples were lower than the national risk screening values. However, significant local accumulation of heavy metal(loid)s, especially Cd, Cr, and Cu, relative to their background values was observed. Moreover, the combined effects of the heavy metal(loid)s only led to a mild pollution level and low ecological risk throughout the study area. Noncarcinogenic risks were not observed among the local residents, and carcinogenic risks were within an acceptable range. The acidic soil in the study area increased the risk of soil Cd pollution, and organic matter affected the distribution of the tested metal(loid)s in the soil. Uncommon geogenic sources with high background values were the sources of Cr and Cu, anthropogenic activities primarily led to Cd, Pb, and As contamination, and a combination of anthropogenic and natural sources was responsible for Hg emissions. The research suggested that appropriate strategies must be implemented to track and reduce soil heavy metal contaminants in the northern and western region of the Hainan orchard area. The results can provide valuable information for policies on pollution prevention and management, the environment, and human health protection in the study region.

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Section: Pca Of Soil Samplessupporting

confidence: 87%

Section: Pollution Assessment and Spatial Pattern Of Soil Heavy Metal...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Heavy metal(loid)s in fruit-growing soils of tropical Hainan Island in China: Pollution, ecological-health risks, spatial assessment, and source analyses

Wu,

Zhou,

Xie

et al. 2023

International Journal of Agricultural and Biological Engineering

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“…Freshwater is one of the vital resources for human life, but it is exposed to various types of pollution 1 . Common human activities like farming, industry, and commerce produce heavy metals as pollutants 2 . These complex and non-biodegradable compounds are toxic and remain in the environment, causing significant environmental pollution and posing irreparable risks to human life 3 , 4 .…”

Section: Introductionmentioning

confidence: 99%

Identification of influential parameters and conditions in heavy metals adsorption onto Cal-LDH-PC using optimization approaches of RSM and Taguchi

Mohrazi,

Ghasemi-Fasaei,

Mojiri

et al. 2024

Sci Rep

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Adsorption process plays an important role in the remediation of heavy metals (HMs) from wastewater. A laboratory trial was conducted to investigate effective parameters for improving the bio-adsorption removal of HMs. SEM, EDX, BET, and FTIR techniques were applied to characterize the calcined layer double hydroxide (Cal-LDH), pectin (PC), and Cal-LDH-PC composite prepared from Licorice pomace. The adsorption of zinc (Zn) cadmium, nickel (Ni) and lead (Pb) onto the most efficient sorbent was investigated using RSM methodology with operational factors such as concentration, reaction time, sorbent dose, and pH. The results related to FTIR showed that Cal-LDH-PC had the highest number of functional groups. Based on the SEM results Cal-LDH had a low surface area (9.36 m2 g-1) and a small pore size (9.22 nm). After the modification process (Cal-LDH-PC), the values of surface area and pore size increased by 13-fold (120 m2 g-1) and 1.5-fold (18 nm), respectively. Cal-LDH had high adsorption performance, more cavities, stability, various functional groups, and excessive carbon and oxygen content, which make it efficient and powerful in removing HMs from wastewater. The optimal condition for achieving the removal efficiency (RE%) values of metals was determined to be 80.79 mg L−1, 100 min, 0.167 g L−1, and 9 for concentration, reaction time, sorbent dose, and pH, respectively. Maximum adsorption capacity and RE (%) were 300 mg g−1 and 99% for Zn. According to the results concentration had a major impact on RE% (except for Ni), while for Ni, adsorbent dose had the most significant impact. The present study introduced Cal-LDH-PC prepared from Licorice pomace as a capable, useful and economical sorbent for HMs removal from polluted environments. Taguchi's statistical method is distinguished as an economic method with easier interpretation, while the RSM approach is more accurate, and it can also check the interaction of parameters.

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A Monte Carlo simulation-based health risk assessment of heavy metals in soils of the tropical region in southern China

Huang,

Su,

et al. 2024

Environ Geochem Health

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Spatial distribution and ecological risk assessment of soil heavy metals in a typical volcanic area: Influence of parent materials

Cited by 9 publications

References 30 publications

Heavy metal(loid)s in fruit-growing soils of tropical Hainan Island in China: Pollution, ecological-health risks, spatial assessment, and source analyses

Heavy metal(loid)s in fruit-growing soils of tropical Hainan Island in China: Pollution, ecological-health risks, spatial assessment, and source analyses

Identification of influential parameters and conditions in heavy metals adsorption onto Cal-LDH-PC using optimization approaches of RSM and Taguchi

A Monte Carlo simulation-based health risk assessment of heavy metals in soils of the tropical region in southern China

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