Speciation, Risk Assessment and Bioavailability of Metals in the Agricultural Soils of the Göksu Delta, Turkey

Demir, Aydeniz

doi:10.1080/15320383.2020.1839740

Cited by 21 publications

(9 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this study, the residual fraction of Cr dominated all contaminated soil profiles, which was consistent with the results of a previous study [ 80 ]. After the entrance of exogenous Cr into the soils, the water-soluble and exchangeable fractions of Cr recovered to the control level after six weeks [ 81 ].…”

Section: Discussionsupporting

confidence: 93%

Distribution and Speciation of Heavy Metal(loid)s in Soils under Multiple Preservative-Treated Wooden Trestles

Zeng

Jin

Wang³

et al. 2023

Toxics

View full text Add to dashboard Cite

The widespread use of wood preservatives, such as chromated copper arsenate (CCA), alkaline copper quaternary (ACQ), and copper azole (CA), may cause environmental pollution problems. Comparative studies on the effect of CCA-, ACQ-, and CA-treated wood on soil contamination are rarely reported, and the behavior of soil metal(loid) speciation affected by preservatives has been poorly understood. Soils under the CCA-, ACQ-, and CA-treated boardwalks were collected to investigate metal(loid) distribution and speciation at the Jiuzhaigou World Natural Heritage site. The results showed that the maximum mean concentrations of Cr, As, and Cu were found in soils under the CCA, CCA, and CCA plus CA treatments and reached 133.60, 314.90, and 266.35 mg/kg, respectively. The Cr, As, and Cu contamination in soils within a depth of above 10 cm was high for all types of boardwalks and limited in the horizontal direction, not exceeding 0.5 m. Cr, As, and Cu in soils were mainly present as residual fractions in all profiles and increased with depth. The proportion of non-residual As in soil profiles under CCA- and CCA plus CA-treatment and exchangeable Cu in CA- and CCA plus CA-treatment were significantly higher than those in the profiles under the other preservative treatments. The distribution and migration of Cr, As, and Cu within soils were influenced by the preservative treatment of trestles, in-service time of trestles, soil properties (e.g., organic matter content), geological disasters (e.g., debris flow), and elemental geochemical behavior. With the CCA treatment for trestles successively replaced by ACQ and CA treatments, the types of contaminants were reduced from a complex of Cr, As, and Cu to a single type of Cu, achieving a reduction in total metal content, toxicity, mobility, and biological effectiveness, thus reducing environmental risks.

show abstract

Section: Discussionsupporting

confidence: 93%

Distribution and Speciation of Heavy Metal(loid)s in Soils under Multiple Preservative-Treated Wooden Trestles

Zeng

Jin

Wang³

et al. 2023

Toxics

View full text Add to dashboard Cite

show abstract

“…We found that 69.37-88.42% of Cr was bound to the non-extractable/residual fraction (F5), indicating low mobility and bioavailability (Ge, Liu, Liu, & Liu, 2021). Therefore, Cr can be argued to pose a low ecological risk in this area (Demir, 2020). Our Cr results concur with those reported by Che et al (2020).…”

Section: Resultssupporting

confidence: 87%

Bioavailability of heavy metals in surface sediment of Anzali International Wetland, Iran

Amini¹,

Hatami-manesh²,

Aazami

et al. 2022

Preprint

View full text Add to dashboard Cite

The study aimed to determine the metal concentration, mobility, bioavailability, ecological risk, and toxicity in the surface sediment of Anzali International Wetland. Pb, As, Cd, Cr, Ni, Zn, and Fe Concentrations in 33 samples are reported here. A five-step sequential extraction technique was used to determine the chemical forms of metals. To assess ecological risk (Er), Risk Index (RI), Toxic Unit (TU), the sum of Toxic Units (ΣTUs), Toxic Risk Index (TRI), and modified Hazard Quotients (mHQ) were calculated. Mean concentrations of heavy metals (mean ± S.D.) were Zn (95.46±20.71) > Cr (19.79±2.79) > Ni (18.49±5.23) > Pb (13.97±3.20) > As (6.45±1.87) > Cd (0.90±0.34). Cd exhibited the highest mobility and bioavailability, while Cr, Pb, Zn, Ni, and As, were found mainly in residual fractions, which are non-bioavailable and pose a little ecological risk. Cd showed the highest levels in the reducible and organic phases; Cr, Pb, Zn, and Ni had the lowest ones. Ecological risk assessment suggested that Cd had “moderate” to “considerable” risk potential at some sampling sites. Risk index indicated that Anzali sediment had “low” to “moderate” risk potential (150 < RI < 300). Based on values of RI, ∑TUs, and mHQ we conclude that sediment of Anzali Wetland has low to moderate risk potential and low toxicity.

show abstract

“…Soil environment, in turn, affects human health in multifarious ways. The poisonous Mo, Cd and Pb metals in soil can be easily absorbed by crops, resulting in a high chronic carcinogenic risk for human beings ( Demir, 2021 ; Xiao et al, 2017 ). The intake of proper quantity of HMs is essential for the living organisms growing, whereas the excessive intake of HMs will provoke detrimental effects on vegetation, animals and human bodies ( Sawut et al, 2018 ; Taylor et al, 2010 ).…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution and ecological risk assessment of heavy metals in karst soils from the Yinjiang County, Southwest China

Han

2022

PeerJ

View full text Add to dashboard Cite

Background Soil heavy metals (HMs) under different land-use types have diverse effects, which may trigger the ecological risk. To explore the potential sources of HMs in karst soils, the spatial distribution and geochemical behavior of HMs based on different land-use types are employed in this study. Methods Soil samples (n = 47) were collected in three suites of karst soil profiles from the secondary forest, abandoned cropland and shrubland in Yinjiang, Southwest China. The concentrations of Ni, Mn, Cr, Pb, Cd and Mo were determined to give a comprehensive understanding of the possible sources of these HMs and evaluate the potential ecological risk in Yinjiang County. Results The mean concentrations of HMs in all profiles followed the same order: Mn > Cr > Ni > Pb > Mo > Cd. Meanwhile, the concentrations of most HMs roughly increased with the depth. Additionally, the concentrations of HMs were mostly correlated with soil pH and SOC, rather than with clay and silt proportions. By contrast, with the enrichment factors (EF), geo-accumulation (Igeo) and potential ecological risk index (PERI) of HMs in soil under different land-use types, the results indicated that these HMs exhibited non-pollution (Igeo < 0) and no ecological risk (PERI < 30) to human health in soils of Yinjiang County. Conclusions The distribution of HMs is dominated by weathering in the karst area, and the effects of agricultural inputs on the enrichment of soil HMs in Yinjiang County are limited. This further state that the arrangement of the local agricultural structure is reasonable.

show abstract

Speciation, Risk Assessment and Bioavailability of Metals in the Agricultural Soils of the Göksu Delta, Turkey

Cited by 21 publications

References 73 publications

Distribution and Speciation of Heavy Metal(loid)s in Soils under Multiple Preservative-Treated Wooden Trestles

Distribution and Speciation of Heavy Metal(loid)s in Soils under Multiple Preservative-Treated Wooden Trestles

Bioavailability of heavy metals in surface sediment of Anzali International Wetland, Iran

Spatial distribution and ecological risk assessment of heavy metals in karst soils from the Yinjiang County, Southwest China

Contact Info

Product

Resources

About