Assessments of Heavy Metals Accumulation, Bioavailability, Mobility, and Toxicity in Serpentine Soils DOI Open Access
Sheila Rozalia Abdul Rashid, Wan Zuhairi Wan Yaacob, Mohd Rozi Umor

и другие.

Sustainability, Год журнала: 2023, Номер 15(2), С. 1218 - 1218

Опубликована: Янв. 9, 2023

Accumulation of heavy metals is a concerning issue due to their known persistence in the ecosystem, and there are standard limits established for maximum allowable concentrations soils. However, metal accumulation coming from serpentinite soils often exceeds regulatory values, lack knowledge regarding bioavailability, mobility, toxicity environment. This research applied novel selective sequential extraction leaching procedures assess gaps on topsoil derived few states Peninsular Malaysia. Based total digestion method, concentration all studied except Mn exceeded site screening levels issued by Department Environment, Malaysia (DOEM). The Geo-accumulation Index categorized Cr, Cd, Ni, Co as extreme contamination Cu, Pb, Zn, unpolluted moderate contamination. From results, Cd was found bounded 100% residual fraction. Meanwhile, Co, Cr were mostly (≥92%) be bound fraction, with remaining percentages distributed within non-bioavailable fractions (crystalline Fe oxides, poorly crystalline oxides). Nevertheless, contaminants showed an increase (1–9%) bioavailability mobility (soluble–exchangeable, surface-adsorbed, organic matter) which pose threat greatly surpassed DOEM standards; however, it still below global USEPA control. concluded that, even though level topsoils had not limit, needs addressed its high being potentially bioavailable mobile

Язык: Английский

Insights into remediation of cadmium and lead contaminated-soil by Fe-Mn modified biochar DOI

shengfeng Yang,

Qingchao Xiao,

Bin Li

и другие.

Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(3), С. 112771 - 112771

Опубликована: Апрель 13, 2024

Язык: Английский

Процитировано

14

Effect of Soil Aging on Cadmium Bioavailability and Bioaccessibility at a Contaminated Site DOI Open Access
G. Petruzzelli, Meri Barbafieri, Elisabetta Franchi

и другие.

Environments, Год журнала: 2023, Номер 10(6), С. 105 - 105

Опубликована: Июнь 20, 2023

The effect of aging on cadmium (Cd) bioavailability and bioaccessibility was investigated in naturally aged field soil within a contaminated site. results, which are based comparison investigations carried out 2018 2022 the same samples, provide realistic evaluation variation Cd chemical forms due to long-term aging. data obtained show significant reduction (from approximately 30% 60%) mobile bioavailable cadmium, while total quantity did not change significantly. fractions is also reflected amount metal absorbed by plants. On one hand, this indicates potential contamination food chain, other, it highlights limitations use phytoextraction as clean-up technology specific In case under study, should be noted that there no decrease over time, remained very high even after four years soil, about 60% content most samples. This health risks related incidental ingestion Cd-contaminated could become main exposure route final site park or public green area.

Язык: Английский

Процитировано

5

Assessments of Heavy Metals Accumulation, Bioavailability, Mobility, and Toxicity in Serpentine Soils DOI Open Access
Sheila Rozalia Abdul Rashid, Wan Zuhairi Wan Yaacob, Mohd Rozi Umor

и другие.

Sustainability, Год журнала: 2023, Номер 15(2), С. 1218 - 1218

Опубликована: Янв. 9, 2023

Accumulation of heavy metals is a concerning issue due to their known persistence in the ecosystem, and there are standard limits established for maximum allowable concentrations soils. However, metal accumulation coming from serpentinite soils often exceeds regulatory values, lack knowledge regarding bioavailability, mobility, toxicity environment. This research applied novel selective sequential extraction leaching procedures assess gaps on topsoil derived few states Peninsular Malaysia. Based total digestion method, concentration all studied except Mn exceeded site screening levels issued by Department Environment, Malaysia (DOEM). The Geo-accumulation Index categorized Cr, Cd, Ni, Co as extreme contamination Cu, Pb, Zn, unpolluted moderate contamination. From results, Cd was found bounded 100% residual fraction. Meanwhile, Co, Cr were mostly (≥92%) be bound fraction, with remaining percentages distributed within non-bioavailable fractions (crystalline Fe oxides, poorly crystalline oxides). Nevertheless, contaminants showed an increase (1–9%) bioavailability mobility (soluble–exchangeable, surface-adsorbed, organic matter) which pose threat greatly surpassed DOEM standards; however, it still below global USEPA control. concluded that, even though level topsoils had not limit, needs addressed its high being potentially bioavailable mobile

Язык: Английский

Процитировано

4