Soil acidification increases metal extractability and bioavailability in old orchard soils of Northeast Jiaodong Peninsula in China

Li, Lianzhen; Wu, Huifeng; Gestel, Cornelis A.M. van; Peijnenburg, Willie J.G.M.; Allen, Herbert E.

doi:10.1016/j.envpol.2014.02.003

Cited by 101 publications

(34 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2). Such low leachate amounts are consistent with Sahuquillo et al (2003) and Li et al (2014) who highlighted the low extraction yields of CaCl 2 extraction, especially in the pH range characterizing the studied soils (Fan et al 2011).…”

Section: Evaluation Of Heavy Metal Extractabilitysupporting

confidence: 88%

Evaluation of single extraction procedures for the assessment of heavy metal extractability in citrus agricultural soil of a typical Mediterranean environment (Argolida, Greece)

et al. 2015

View full text Add to dashboard Cite

Purpose Heavy metals are natural soil constituents; however, the intense use of agrochemicals can increase total contents above background levels as well as the available fractions of the more toxic elements. In this study, the occurrence of some metals was investigated in agricultural soils from an intensely farmed rural area of Greece (Argolida) aiming to evaluate the various available pools and examine their relationship with the reactive and pseudototal soil fraction. Materials and methods Thirty soil samples were selected from a large database of a previous geochemical survey in the study area. The pseudototal (aqua regia), reactive (0.43 M HNO 3 ), potentially phytoavailable (0.05 M EDTA), mobilizable (0.43 M HAc), and mobile (0.01 M CaCl 2 ) pools of Cu, Zn, Cd, and Mn were determined. Soil properties were also examined including pH, total organic carbon, calcium carbonate content, and amorphous Al, Mn, and Fe oxides. In order to combine all geochemical information and elucidate the association between available metal pools and soil chemical characteristics, multiple linear regression was employed. The various proportions of available metal pools (%) were expressed as a function of the pseudototal or reactive metal content and general soil properties. Results and discussionThe mobile pool of trace elements in the studied soils was quite low, while notable amounts of Cu were released by EDTA indicating a greater tendency for complexation. The acetic acid extraction yielded increased percentages of Cd and Mn and for these elements the reactive pools were quite representative of the pseudototal content. Extractable amounts of Zn by all the applied reagents were very low indicating that a considerable part of this metal is of geogenic origin. The empirical regression models showed that prediction of the available pools of Cu, Zn, and Cd from the pseudototal and reactive content is feasible. Although pH is known to be a key factor of at least exchangeable metal pools, its narrow range blurs its influence in the present study. Conclusions The relatively low extraction yields of the studied elements show that the potential hazard of metal transfer to plants in the area is minimal despite some elevated pseudototal concentrations. The geochemical reactive and various available pools of Cu, Zn, and Cd in Mediterranean calcareous citrus soils can be determined by a single soil extraction test using dilute nitric acid.

show abstract

Section: Evaluation Of Heavy Metal Extractabilitysupporting

confidence: 88%

Evaluation of single extraction procedures for the assessment of heavy metal extractability in citrus agricultural soil of a typical Mediterranean environment (Argolida, Greece)

et al. 2015

View full text Add to dashboard Cite

show abstract

“…In contrast, this phenomenon is unfavorable for phytoextraction, which depends on Cu uptake and translocation into the shoot. The lower Cu availability in the soil solution is attributed to the high affinity of Cu for the vermicompost organic compounds and to the formation of lesssoluble complexes in the soil (Jordão et al, 2011;Li et al, 2014). In addition, the increase in soil pH due to vermicompost application resulted in higher Cu complexation by the organic residues added to the soil, thus decreasing Cu bioavailability.…”

Section: Discussionmentioning

confidence: 95%

Interaction between arbuscular mycorrhizal fungi and vermicompost on copper phytoremediation in a sandy soil

Santana

Ferreira

Soriani

et al. 2015

Applied Soil Ecology

View full text Add to dashboard Cite

“…In calcareous soils where Cd-carbonate complexes predominate (Renella et al 2004), a large proportion (e.g., 35 %) of Cd may additionally be present as Cd 2+ and CdHCO 3 + (Hirsch and Banin, 1990). Under conditions of low soil pH, Cd bioavailability and mobility is higher due to Cd transformation from immobile forms such as Fe and Mn oxides and carbonates to more bioavailable and exchangeable forms (Xian and Shokohifard 1989;Li et al 2014). Soil pH may decrease or increase Cd bioavailability in soil indirectly via transformation of Fe and Mn minerals.…”

Section: Effect Of Soil Ph On CD Bioavailabilitymentioning

confidence: 98%

Cadmium Bioavailability, Uptake, Toxicity and Detoxification in Soil-Plant System

Shahid

Dumat

Khalid

et al. 2016

Reviews of Environmental Contamination and Toxicology

232

175

View full text Add to dashboard Cite

This review summarizes the findings of the most recent studies, published from 2000 to 2016, which focus on the biogeochemical behavior of Cd in soil-plant systems and its impact on the ecosystem. For animals and people not subjected to a Cd-contaminated environment, consumption of Cd contaminated food (vegetables, cereals, pulses and legumes) is the main source of Cd exposure. As Cd does not have any known biological function, and can further cause serious deleterious effects both in plants and mammalian consumers, cycling of Cd within the soil-plant system is of high global relevance.The main source of Cd in soil is that which originates as emissions from various industrial processes. Within soil, Cd occurs in various chemical forms which differ greatly with respect to their lability and phytoavailability. Cadmium has a high phytoaccumulation index because of its low adsorption coefficient and high soil-plant mobility and thereby may enter the food chain. Plant uptake of Cd is believed to occur mainly via roots by specific and non-specific transporters of essential nutrients, as no Cd-specific transporter has yet been identified. Within plants, Cd causes phytotoxicity by decreasing nutrient uptake, inhibiting photosynthesis, plant growth and respiration, inducing lipid peroxidation and altering the antioxidant system and functioning of membranes. Plants tackle Cd toxicity via different defense strategies such as decreased Cd uptake or sequestration into vacuoles. In addition, various antioxidants combat Cd-induced overproduction of ROS. Other mechanisms involve the induction of phytochelatins, glutathione and salicylic acid.

show abstract

Soil acidification increases metal extractability and bioavailability in old orchard soils of Northeast Jiaodong Peninsula in China

Cited by 101 publications

References 36 publications

Evaluation of single extraction procedures for the assessment of heavy metal extractability in citrus agricultural soil of a typical Mediterranean environment (Argolida, Greece)

Evaluation of single extraction procedures for the assessment of heavy metal extractability in citrus agricultural soil of a typical Mediterranean environment (Argolida, Greece)

Interaction between arbuscular mycorrhizal fungi and vermicompost on copper phytoremediation in a sandy soil

Cadmium Bioavailability, Uptake, Toxicity and Detoxification in Soil-Plant System

Contact Info

Product

Resources

About