Bioaccumulation of heavy metals in earthworms from field contaminated soil in a subtropical area of China

Wang, Kun; Qiao, Yuhui; Zhang, Huiqi; Yue, Shizhong; Li, Huafen; Ji, Xiaolin; Liu, Longsheng

doi:10.1016/j.ecoenv.2017.11.058

Cited by 93 publications

(45 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Liu et al, 2005;Centofanti et al, 2016), or former mining operations (e.g. Morgan and Morgan, 1990;Sizmur et al, 2011;Wang et al, 2018). Elevated concentrations in soils were also observed in soils artificially amended in the laboratory using metal salts (e.g.…”

Section: Earthworm Trace Metal Concentrationsmentioning

confidence: 99%

Synthesis of earthworm trace metal uptake and bioaccumulation data: Role of soil concentration, earthworm ecophysiology, and experimental design

Richardson

Görres

Sizmur

2020

Environmental Pollution

View full text Add to dashboard Cite

Trace metals can be essential for organo-metallic structures and oxidation-reduction in metabolic processes or may cause acute or chronic toxicity at elevated concentrations. The uptake of trace metals by earthworms can cause transfer from immobilized pools in the soil to predators within terrestrial food chains. We report a synthesis and evaluation of uptake and bioaccumulation empirical data across different metals, earthworm genera, ecophysiological groups, soil properties, and experimental conditions (metal source, uptake duration, soil extraction method). Peer-reviewed datasets were extracted from manuscripts published before June 2019. The 56 studies contained 3513 soil-earthworm trace metal concentration paired data sets across 11 trace metals (As, Cd, Cr, Cu, Hg, Mn, Ni, Pb, Sb, U, Zn). Across all field and laboratory experiments studied, the median concentrations of Hg, Pb, and Cd in earthworm tissues that were above concentrations known to be hazardous for consumption by small mammals and avian predators but not for Cu, Zn, Cr, Ni, and As. Power regressions show only Hg and Cd earthworm tissue concentrations were well-correlated with soil concentrations with R 2 > 0.25. However, generalized linear mixed-effect models reveal that earthworm concentrations were significantly correlated with soil concentrations for log-transformed Hg, Cd, Cu, Zn, As, Sb (p < 0.05). Factors that significantly contributed to these relationships included earthworm genera, ecophysiological group, soil pH, and organic matter content. Moreover, spiking soils with metal salts, shortening the duration of exposure, and measuring exchangeable soil concentrations resulted in significantly higher trace metal uptake or greater bioaccumulation factors. Our results highlight earthworms are able to consistently bioaccumulate toxic metals (Hg and Cd only) across field and laboratory conditions. However, future experiments should incorporate greater suites of trace metals, broader genera of earthworms, and more diverse laboratory and field settings generate data to devise universal quantitative relationships between 48 soil and earthworm tissue concentrations.

show abstract

Section: Earthworm Trace Metal Concentrationsmentioning

confidence: 99%

Synthesis of earthworm trace metal uptake and bioaccumulation data: Role of soil concentration, earthworm ecophysiology, and experimental design

Richardson

Görres

Sizmur

2020

Environmental Pollution

View full text Add to dashboard Cite

show abstract

“…De variatie in gehalte in de bodem is daarbij ongeveer dezelfde als die in de worm. Dit laatste is recentelijk ook weer door Wang et al (2018) gerapporteerd: in een veldstudie in Hunan (China) vinden zij een bioaccumulatiefactor (gehalte worm-gehalte bodem) van 1 à 1.5, wat daarmee ook neerkomt op een vergelijkbaar gehalte in zowel de bodem als in de worm.…”

Section: Resultaten Wormenunclassified

Bodem-, gewas-en ecologische kwaliteit Ilperveld : monitoringsresultaten 2015-2017

Römkens

Linders

2019

View full text Add to dashboard Cite

“…The heavy metal concentrations in earthworms at weekly intervals during the 35‐day test duration was plotted to determine the trends in metal uptake and depuration in the e‐waste‐contaminated soils compared to those in the non‐e‐waste soils. Finally, bioaccumulation factors (BAFs) of metals in A. nilotica earthworms were calculated using Equation 7 (OECD, 2010; Wang et al, 2018).

BAF = \frac{C_{w}}{C_{s}}

…”

Section: Methodsmentioning

confidence: 99%

Soil Contamination and Bioaccumulation of Heavy Metals by a Tropical Earthworm Species (Alma nilotica) at Informal E‐Waste Recycling Sites in Douala, Cameroon

Nfor

Fai

Tamungang

et al. 2022

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

Soil contamination at electronic waste (e‐waste) recycling sites is pervasive, though many locations have yet to be studied. While such contamination can present risks to soil organisms, little is known on the risks to native species. The objective of the present study was to assess soil contamination by heavy metals at e‐waste recycling sites, and the potential of Alma nilotica, a native earthworm species, to bioaccumulate these metals. Soil samples collected from eight informal e‐waste recycling sites and two non‐e‐waste sites in Douala, Cameroon, were analyzed for metal content. Metal concentrations in earthworm juveniles exposed to the soils for 21 days followed by a 14‐day post‐exposure period were measured weekly. Mean soil metal concentrations at e‐waste sites ranked as Cu > Pb > Zn > Hg > Ni > As > Cd > Co > Cr. Based on contamination factors, soil contamination ranged from “moderate” (Cr), through “considerable” (Co and Cd), to “very high” for the rest of the metals. Based on the modified degree of contamination and risk index, all e‐waste sites had “ultra‐high” contamination with Ni, Pb, and Zn posing very high ecological risks and Bonaberi being the most contaminated site. There was a positive correlation between soil metal concentrations and metal accumulation (retention) by eathworms, but Hg and Co had the highest bioaccumulation factors (BAFs) despite having low soil concentrations. These results document that e‐waste sites in Douala are contaminated with metals and that native earthworm species can bioaccumulate the studied metals at levels that could account for the toxic effects earlier recorded. With e‐waste recycling growing worldwide, there is a need for more data, especially from understudied locations. Environ Toxicol Chem 2022;41:356–368. © 2021 SETAC

show abstract

Bioaccumulation of heavy metals in earthworms from field contaminated soil in a subtropical area of China

Cited by 93 publications

References 65 publications

Synthesis of earthworm trace metal uptake and bioaccumulation data: Role of soil concentration, earthworm ecophysiology, and experimental design

Synthesis of earthworm trace metal uptake and bioaccumulation data: Role of soil concentration, earthworm ecophysiology, and experimental design

Bodem-, gewas-en ecologische kwaliteit Ilperveld : monitoringsresultaten 2015-2017

Soil Contamination and Bioaccumulation of Heavy Metals by a Tropical Earthworm Species (Alma nilotica) at Informal E‐Waste Recycling Sites in Douala, Cameroon

Contact Info

Product

Resources

About