Accumulation of arsenic, mercury and heavy metals in lacustrine sediment in relation to eutrophication: Impacts of sources and climate change

Zhang, Hanxiao; Huo, Shouliang; Yeager, Kevin M.; Xi, Beidou; Zhang, Jingtian; He, Zhuoshi; Ma, Chunzi; Wu, Fengchang

doi:10.1016/j.ecolind.2018.05.059

Cited by 51 publications

(15 citation statements)

References 60 publications

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“…PC S14 was considered a component of a nitrogenous fertilizer group, where the application of the fertilizer should promote the BCF of wheat Zn. also reported that nitrogenous fertilizers have a positive influence on BCF and should be controlled to an appropriate level [9]. However, as there are differences between other heavy metals and As in the soil, it is important to explain that N competes with As in the soil solid phase of the study area.…”

Section: Cornmentioning

confidence: 96%

“…Sci. 2019, 9,1902 9 of 20 0.22, 0.0043, 0.01, and 0.004 mg/kg, respectively. The average wheat crop values for Cu, Pb, Zn, Cr, Ni, Cd, As, and Hg are 4.63, 0.06, 32.07, 0.03, 0.10, 0.03, 0.03, and 0.0022 mg/kg, respectively.…”

Section: Concentrations Of Metal(loid)s In Corn and Wheatmentioning

confidence: 96%

“…Sci. 2019, 9,1902 4 of 20 method. The content of Fe, P, K, Mn, Ca, Mg, and other soil properties was determined using the powder tablet XRF method [39].…”

Section: Sample Collection and Analysismentioning

confidence: 99%

“…They can be absorbed by crops and then enter the food chain. Alternatively, metal(loid)s can enter water bodies or the atmosphere and threaten human health and animal reproduction [1][2][3][4][5][6][7][8][9]. Therefore, the treatment of soils contaminated with metal(loid)s is a significant, yet challenging, research topic around the world.…”

Section: Introductionmentioning

confidence: 99%

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Bioconcentration, Potential Health Risks, and a Receptor Prediction Model of Metal(loid)s in a Particular Agro-Ecological Area

Cai

Song

2019

Applied Sciences

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To investigate the bioconcentration and potential health risks of metal(loid)s in a particular agro-ecological area, 230 pairs of soil and corresponding crop grain samples were collected from typical corn and wheat plants. The geo-accumulation index (Igeo), bioconcentration factors (BCF), health risk assessment (the target hazard quotient), and Receptor Prediction Model (PCS-SMLR) analysis were adopted to study the spatial distribution, assess the health risks, and predict the relationship between metal(loid)s and soil properties. It was found that the mean concentrations of Cu, Zn, Pb, Hg, and Cd in the study area’s agricultural soils exceeded the background soil concentrations, especially for Cd (0.2 mg/kg), Meanwhile, the corresponding Cd concentration in wheat samples was higher than the food quality limit. The results of the Igeo showed that the samples with a value higher than 0 for Cd and Hg accounted for 47.83% and 33.48%, respectively. The results of BCF of Cu, Zn, Cd, and As were higher in wheat than in corn, except for Ni. The target hazard quotient (TTHQ) of health risk of wheat, corn, and soil were higher for children (2.48) than adults (1.78), showing a potential health risk for individuals who mostly consume wheat. In addition, the PCS-SMLR analysis of the BCF prediction model for Cu, Zn, As, and soil properties showed differences in terms of the influences from wheat and corn. These results provide valuable information that not only can help local residents improve the staple food structure, but also can get provide a reference metal(loid)s concentration level for agricultural soils in the study area and restore a sustainable agro-ecological environment.

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Section: Cornmentioning

confidence: 96%

Section: Concentrations Of Metal(loid)s In Corn and Wheatmentioning

confidence: 96%

“…Sci. 2019, 9,1902 4 of 20 method. The content of Fe, P, K, Mn, Ca, Mg, and other soil properties was determined using the powder tablet XRF method [39].…”

Section: Sample Collection and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bioconcentration, Potential Health Risks, and a Receptor Prediction Model of Metal(loid)s in a Particular Agro-Ecological Area

Cai

Song

2019

Applied Sciences

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“…Pb remains and accumulates in the food chain after entering the environment, which causes serious toxicity to organisms. Moreover, Pb affects plant photosynthesis and transpiration capacity [5,6]; therefore, Pb remediation has become the focus of many studies worldwide. Eichhornia crassipes is an aquatic floating plant that is widely distributed all over the world and occurs in large quantities in karst areas in China.…”

mentioning

confidence: 99%

Effects and Mechanisms of Calcium Ion Addition on Lead Removal from Water by Eichhornia crassipes

Zhou

Jiang

Qin

et al. 2020

IJERPH

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Karst water is rich in calcium ions (Ca 2+ ) and exhibits poor metal availability and low biodegradation efficiency. This study sought to analyze the effects and mechanisms of Ca 2+ on lead (Pb) removal and absorption by Eichhornia crassipes (a floating plant common in karst areas). Moreover, the morphology and functional groups of E. crassipes in water were characterized via SEM, and FTIR. The results demonstrated that the removal rate of Pb in karst water (85.31%) was higher than that in non-karst water (77.04%); however, the Pb bioconcentration amount (BCA) in E. crassipes roots in karst water (1763 mg/kg) was lower than that in non-karst water (2143 mg/kg). With increased Ca 2+ concentrations (60, 80, and 100 mg/L) in karst water, the Pb removal rate increased (85.31%, 88.87%, and 92.44%), the Pb BCA decreased (1763, 1317, and 1095 mg/kg), and the Ca BCA increased (6801, 6955, and 9368 mg/kg), which was attributed to PbCO 3 and PbSO 4 precipitation and competitive Ca and Pb absorption. High Ca 2+ concentrations increased the strength of cation exchange, alleviated the fracture degree of fibrous roots, reduced the atrophy of vascular bundles, protected the cell wall, promoted C-O combined with Pb, enhanced the strength of O-H, SO 4 2− , C=O, and reduced the oxidization of alkynyl acetylene bonds.industrial wastewater discharged by the lead smelting industry. Pb remains and accumulates in the food chain after entering the environment, which causes serious toxicity to organisms. Moreover, Pb affects plant photosynthesis and transpiration capacity [5,6]; therefore, Pb remediation has become the focus of many studies worldwide. Eichhornia crassipes is an aquatic floating plant that is widely distributed all over the world and occurs in large quantities in karst areas in China. E. crassipes has broad, thick, glossy, ovate leaves and stems, which are important for photosynthesis, food production, gas exchange, and water transpiration [7]. This plant is known to adapt to a wide variety of environmental conditions and even grows well in sewage water. Importantly, E. crassipes possesses a high heavy metal tolerance and uptake efficiency and has therefore become popular for water phytoremediation [8]. E. crassipes can reproduce quickly and absorb various pollutants [9]. Suryandari et al.[10] also demonstrated Pb removal efficiencies of up to 99.71% in E. crassipes harvested after nine days.Calcium (Ca) is an essential element for plants; it is an important regulator of plant growth and supports the structure and stability of cell walls, membranes, and membrane-binding proteins. Ca is also a second messenger that regulates the response of plants to environmental changes [11]. Moreover, certain Ca 2+ concentrations could promote growth and development, metabolism, cell structure, and adaptability to heavy metal stress [12][13][14]. Ca 2+ could also inhibit the transport of heavy metals from underground to aboveground plant structures [15]. Increased Ca 2+ concentrations could reduce heavy metal solubility [16] and allevia...

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Water and Sanitation: A Global Priority

Usha,

Nithiya

2024

Water Resources Development and Management

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Accumulation of arsenic, mercury and heavy metals in lacustrine sediment in relation to eutrophication: Impacts of sources and climate change

Cited by 51 publications

References 60 publications

Bioconcentration, Potential Health Risks, and a Receptor Prediction Model of Metal(loid)s in a Particular Agro-Ecological Area

Bioconcentration, Potential Health Risks, and a Receptor Prediction Model of Metal(loid)s in a Particular Agro-Ecological Area

Effects and Mechanisms of Calcium Ion Addition on Lead Removal from Water by Eichhornia crassipes

Water and Sanitation: A Global Priority

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