Effect of soil type on distribution and bioaccessibility of metal contaminants in shooting range soils

Sanderson, Peter; Naidu, Ravi; Bolan, Nanthi; Bowman, Mark; Mclure, Stuart

doi:10.1016/j.scitotenv.2012.08.014

Cited by 96 publications

(69 citation statements)

References 50 publications

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“…Compared to the surface concentrations, the decreasing Sb and Pb concentrations with increasing depth in the soils at Sites B and C indicate that both elements are strongly bound in the OM-rich topsoil and little leached down the soil profile. This decrease in concentration with depth was also found in previous studies [27,[51][52][53][54][55]. Nonetheless, Sb and Pb concentrations were elevated, even at a depth of 30 cm (20 to 130 mg kg −1 Sb and 800 to 5600 mg kg −1 Pb).…”

Section: Total Sb Concentrations In the Shooting Range Soilssupporting

confidence: 88%

Release and Biomethylation of Antimony in Shooting Range Soils upon Flooding

2018

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Antimony (Sb) is an understudied pollutant with potentially toxic effects at particularly low concentrations. The fate of Sb in the environment is complicated because of its many chemical forms at varying oxidation states. Here, we validated an extraction method and an analytical technique to quantify inorganic and methylated Sb in bulk soil and soil solution. We identified and quantified trimethylantimony (TMSb) in shooting range soils for the first time, up to a concentration of 1.35 mg kg −1 . Then, we evaluated the release of Sb species from soil to soil solution as well as the influence of manure addition upon flooding in an incubation experiment with fresh soils from shooting ranges. This incubation experiment showed an immediate and exhaustive Sb release into the soil solution (within 6 h), reaching over 3000 µg L −1 for one site, followed by a sharp decline and again a slow increase at the end of the incubation in Sb concentrations in the soil solution for two of the three sites. TMSb was also formed in the soil solution after 4 to 10 days. High dissolved organic carbon (DOC) concentrations and the dissolution of Fe-and Mn-(oxy-)hydroxides were the main drivers of Sb release, while the addition of organic matter (OM) drove TMSb formation.

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Section: Total Sb Concentrations In the Shooting Range Soilssupporting

confidence: 88%

Release and Biomethylation of Antimony in Shooting Range Soils upon Flooding

2018

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“…Most of our samples exhibited faintly acid. Also, acidic pH could promote dissolution of secondary minerals and movement of Pb in transects (Sanderson et al 2012). In our study, SOC have significant positive correlation with all studied heavy metals.…”

Section: Discussionmentioning

confidence: 99%

Response of rhizosphere microbial community structure and diversity to heavy metal co-pollution in arable soil

Deng

Zeng

Fan

et al. 2015

Appl Microbiol Biotechnol

135

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Due to the emerging environmental issues related to heavy metals, concern about the soil quality of farming lands near manufacturing district is increasing. Investigating the function of soil microorganisms exposed to long-term heavy metal contamination is meaningful and important for agricultural soil utilization. This article studied the potential influence of several heavy metals on microbial biomass, activity, abundance, and community composition in arable soil near industrial estate in Zhuzhou, Hunan province, China. The results showed that soil organic contents (SOC) were significantly positive correlated with heavy metals, whereas dehydrogenase activity (DHA) was greatly depressed by the heavy metal stress. Negative correlation was found between heavy metals and basal soil respiration (BSR), and no correlation was found between heavy metals and microbial biomass content (MBC). The quantitative PCR (QPCR) and polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) analysis could suggest that heavy metal pollution has significantly decreased abundance of bacteria and fungi and also changed their community structure. The results could contribute to evaluate heavy metal pollution level in soil. By combining different environmental parameters, it would promote the better understanding of heavy metal effect on the size, structure, and activity of microbial community in arable soil.

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“…Detailed soil sampling methodology and physicochemistry of these soils is presented in Sanderson et al [39]. In brief, samples were sieved to <2 mm for routine physiochemical characterisation using standard methods.…”

Section: Soilsmentioning

confidence: 99%

“…Previously measured iron oxide concentrations for each soil were used as an input in the model. [39]. The pH and DOC were input based on Table 2 for each treatment and exchangeable Pb(determined by 1 M MgCl 2 extraction) was used as the initial input for Pb in solution.…”

Section: Geochemical Modellingmentioning

confidence: 99%

“…The suitability of chemical stabilisation by P and MgO application depends on site specific conditions, including the nature of soils and the forms of Pb present in the soil, which differs between shooting range sites [39]. While numerous studies have been conducted to investigate the effect of P on immobilisation of Pb, there is limited information comparing the extent of Pb immobilisation in soils with varying physiochemical properties.…”

Section: Introductionmentioning

confidence: 99%

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