Heavy metal contamination risk assessment and correlation analysis of heavy metal contents in soil and crops

Xiang, Mingtao; Li, Yan; Yang, Jiayu; Lei, Kaige; Li, Yang; Li, Feng; Zheng, Daofu; Fang, Xiaoqian; Cao, Yusheng

doi:10.1016/j.envpol.2021.116911

Cited by 274 publications

(93 citation statements)

References 41 publications

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“…Some are considered essential, in minimal amounts, for normal plant growth, (e.g., Cu 2+ , Mo 4+ , Ni 2+ , Se 2+ , Co 2+ , Zn 2+ and Mn 2+ ), while others have no known benefits to plants (e.g., Cd 2+ , Sb 3+ , Cr 3+ , As 3+ , Pb 2+ , Ag 1+ and Hg 2+ ) [ 209 , 210 ]. The high-level uptake of heavy metals in general is harmful [ 211 ], and in crops it can cause a reduction in yield [ 212 , 213 ]. There are several E3 ligases that have been described to be involved in the regulation of HMs stress tolerance ( Table 1 ).…”

Section: Heavy Metal Stressmentioning

confidence: 99%

Plant E3 Ligases and Their Role in Abiotic Stress Response

Al-Saharin

Hellmann

Mooney

2022

Cells

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Plants, as sessile organisms, have limited means to cope with environmental changes. Consequently, they have developed complex regulatory systems to ameliorate abiotic stresses im-posed by environmental changes. One such system is the ubiquitin proteasome pathway, which utilizes E3 ligases to target proteins for proteolytic degradation via the 26S proteasome. Plants ex-press a plethora of E3 ligases that are categorized into four major groups depending on their structure. They are involved in many biological and developmental processes in plants, such as DNA repair, photomorphogenesis, phytohormones signaling, and biotic stress. Moreover, many E3 ligase targets are proteins involved in abiotic stress responses, such as salt, drought, heat, and cold. In this review, we will provide a comprehensive overview of E3 ligases and their substrates that have been connected with abiotic stress in order to illustrate the diversity and complexity of how this pathway enables plant survival under stress conditions.

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Section: Heavy Metal Stressmentioning

confidence: 99%

Plant E3 Ligases and Their Role in Abiotic Stress Response

Al-Saharin

Hellmann

Mooney

2022

Cells

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“…The potential ecological risk index method [ 27 , 45 ] was used to evaluate the potential ecological risks of soil PHEs obtained through sedimentation from coking waste gas in BTH (Equations (8) and (9)).

where

is the potential ecological risk index of a single PHE i ;

is the toxicity coefficient of PHE i , and the coefficients of As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn are 10, 30, 2, 5, 40, 5, 5, and 1, respectively [ 45 , 46 , 47 ];

is the concentration of a single PHE i , mg·kg −1 ;

is a reference for a single PHE i , mg·kg −1 , which was the background value of PHEs in BTH; RI is the comprehensive potential ecological risk index of PHEs.…”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, PHE emissions from coking plants may bring certain carcinogenic and non-carcinogenic risks to surrounding residents; and the health risks of As, Cr, and Ni are relatively high [ 25 ]. Moreover, soils with a high level of PHEs may result in the accumulation of PHEs in plants, which will reduce soil economic benefits and increase human health risks [ 15 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Discharge Patterns of Potentially Harmful Elements (PHEs) from Coking Plants and Its Relationship with Soil PHE Contents in the Beijing–Tianjin–Hebei Region, China

Wan

Zeng

et al. 2022

Toxics

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The Beijing–Tianjin–Hebei (BTH) region in China is a rapid development area with a dense population and high-pollution, high-energy-consumption industries. Despite the general idea that the coking industry contributes greatly to the total emission of potentially harmful elements (PHEs) in BTH, quantitative analysis on the PHE pollution caused by coking is rare. This study collected the pollutant discharge data of coking enterprises and assessed the risks of coking plants in BTH using the soil accumulation model and ecological risk index. The average contribution rate of coking emissions to the total emissions of PHEs in BTH was ~7.73%. Cross table analysis indicated that there was a close relationship between PHEs discharged by coking plants and PHEs in soil. The accumulation of PHEs in soil and their associated risks were calculated, indicating that nearly 70% of the coking plants posed a significant ecological risk. Mercury, arsenic, and cadmium were the main PHEs leading to ecological risks. Scenario analysis indicated that the percentage of coking plants with high ecological risk might rise from 8.50% to 20.00% as time progresses. Therefore, the control of PHEs discharged from coking plants in BTH should be strengthened. Furthermore, regionalized strategies should be applied to different areas due to the spatial heterogeneity of risk levels.

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“…Heavy metals are lethal, resistant, insoluble, non-biodegradable and can cause serious concern to the environment and humans through biological or chemical processes [1,2]. The deposited heavy metals may re-enter and remobilized from the sediments into the marine water system and bioaccumulate in bodies of marine organisms.…”

Section: Introductionmentioning

confidence: 99%

Geochemical Assessment of Heavy Metal Contamination in Coastal Sediment Cores from Usukan Beach, Kota Belud, Sabah, Malaysia

Ling

Junaidi

Harun

et al. 2022

J. Phys.: Conf. Ser.

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This article discussed on the status of heavy metals (As, Cr, Cu, Mn, Ni, Pb and Zn) pollution in coastal sediment cores and assess the sediment quality from Usukan Beach, Kota Belud. Several geochemical parameter analyses such as pH, moisture content (MC), organic matter (OM) and granulometric size were performed to identify the physico-chemical properties of sediments that affect the assessment of metal pollution. Heavy metals in the sediment samples were extracted using aqua regia methods and Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) were employed for determination of heavy metals in extracted sediment solutions. The results show that the coastal sediment changes from acidic to alkaline when heading from inland to seaward direction, with an average pH of 5.6-8.5. The moisture content and organic matter fluctuate from low to moderately high, within the range of 4.9-21.9% and 0.30-6.73%, respectively. The coastal sediments are dominated by a sandy texture near the marine environment and change to sandy loam and sandy clay loam when heading toward the inland. The hierarchical average metal concentration shows Fe>Mn>Ni>Cr>Zn>Cu>Pb>As. Sediment quality assessment is evaluated based on the sediment quality guidelines (SQGs) and from the pollution indices such as geoaccumulation index (Igeo), enrichment factor (EF), contamination factor (CF), modified degree of contamination (mCd) and pollution load index (PLI). The results indicated the sediment has only low degree of contamination by anthropogenic sources and the current status of the study area is safe from pollution.

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Heavy metal contamination risk assessment and correlation analysis of heavy metal contents in soil and crops

Cited by 274 publications

References 41 publications

Plant E3 Ligases and Their Role in Abiotic Stress Response

Plant E3 Ligases and Their Role in Abiotic Stress Response

Discharge Patterns of Potentially Harmful Elements (PHEs) from Coking Plants and Its Relationship with Soil PHE Contents in the Beijing–Tianjin–Hebei Region, China

Geochemical Assessment of Heavy Metal Contamination in Coastal Sediment Cores from Usukan Beach, Kota Belud, Sabah, Malaysia

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