Effects of Mercury (Hg) on Soil Nematodes: A Microcosm Approach

Martinez, Joey Genevieve; Quiobe, Shiela Pearl; Moens, Tom

doi:10.1007/s00244-019-00652-7

Cited by 6 publications

(2 citation statements)

References 69 publications

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“…These nematodes are affected by the high concentration of Hg. Exposure to human leading to defects in immune response, vital organs, nervous system and reproduction 60 .…”

Section: Resultsmentioning

confidence: 99%

Toxic and heavy metals contamination assessment in soil and water to evaluate human health risk

Ahmad

Alharthy

Zubair

et al. 2021

Sci Rep

225

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Due to urbanization and industrialization, there has been an increase in solid waste generation and has become a global concern and leakage of leachate from landfills contaminate the soil and groundwater and hence can have a severe impact on human health. The present study aimed to determine the composition of toxic metals (Cr, Mn, Cu, As) and heavy metals (Cd, Ba, Hg, Pb) in soil and water by an inductively coupled plasma optical emission spectrometer (ICP-OES). To ensure accuracy during the analysis of Cr, Mn, Cu, As, Cd, Ba, Hg, and Pb in real samples, certified reference material (CRM, SRM 2709a) of San Joaquin soil and water (SRM 1640a) were analyzed and results were presented in terms of % recovery studies. The mean concentration of all the metals in soil and water did not exceed the limit set by the European Community (EU), WHO, and US EPA except Cu where the permissible limit defined by the EU is 50–140 mg/kg in soil. The soil is uncontaminated to moderately contaminated with respect to all metals except the Cu and Pb. Among the average daily dose (ADD) of soil, ADDing and ADDinh for children had the maximum dose for all metals than adults while ADDderm was higher in adults. Hazard quotient (HQ) trend in both adults and children was found in order HQing > HQderm > HQinh of soil for all metals except Ba which followed HQing > HQinh > HQderm. Hazard index (HI) values of soil for Cr and Pb in children were 7 and 7.5 times higher than adults respectively. Lifetime cancer risk (LCR) value for Cr by different exposure pathways of soil was 5.361 × 10−4 for children which are at the lower borderline of risk for cancer.

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“…These nematodes are affected by the high concentration of Hg. Exposure to human leading to defects in immune response, vital organs, nervous system and reproduction 60 .…”

Section: Resultsmentioning

confidence: 99%

Toxic and heavy metals contamination assessment in soil and water to evaluate human health risk

Ahmad

Alharthy

Zubair

et al. 2021

Sci Rep

225

View full text Add to dashboard Cite

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“…Nematode diversity (H') and evenness (J') were lower at Cd-5 and Cd-Hg 5+20 than the control and Hg-20 (Table 3), which suggested single Cd and mixing of Cd and Hg create worse effects on nematode communities than single Hg. Martinez et al (2019) proposed that nematode-based environmental evaluations should be interpreted in a context-dependent way. Acidic soils can inhibit the diffusion of cadmium (Lu et al, 2005) and enhance its bioavailability (Kim et al, 2009), but the bioavailability of Hg tends to be lower in acidic soils (Mahbub et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Short-term effects of cadmium and mercury on soil nematode communities in a pot experiment

Lu¹,

Chen

Xue

et al. 2020

Helminthologia

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SummaryAnalysis of soil nematode feeding groups and functional guilds were used as a valuable tool to detect heavy metal pollution. Effects of cadmium (Cd) at 5 mg/kg, mercury (Hg) at 20mg/kg, combined Cd and Hg at 5+20mg/kg on the nematode communities were studied after three months application. Nematodes were collected from soil in rhizosphere of Morning glories (Pharhiris nil) which were applied as heavy metal accumulators and were grown in the experimental pots. Both single and combined heavy metals had marked effects on the nematode abundance, life-history strategies and feeding type composition. Bacteriovores and c-p 2 group were found to be the most abundant trophic group and functional guild, respectively. Acrobeloides and Pratylenchus were the most two abundant genera, decreasing number of them was responsible for the significant difference between control and polluted treatments. Cd-5 and Cd-Hg 5+20 presented lower values of nematode diversity index (H’) and evenness index (J’) than Hg-20. The combination of Cd and Hg showed lower nematode trophic diversity (TD), in comparison with single Cd or Hg. Conversely, heavy metals addition exhibited no pronounced effect on Maturity index (MI), structural index (SI) and enrichment index (EI). Our results demonstrate that genera composition is a better indicator to short-term heavy metal effects than some common indicator indices and emphasize that deeper assemblage analyses are needed for a correct interpretation of short-term disturbance on soil nematodes.

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Assessment of potentially toxic metal(loid)s contamination in soil near the industrial landfill and impact on human health: an evaluation of risk

Ahmad

Zubair

Ahmed

et al. 2023

Environ Geochem Health

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Effects of Mercury (Hg) on Soil Nematodes: A Microcosm Approach

Cited by 6 publications

References 69 publications

Toxic and heavy metals contamination assessment in soil and water to evaluate human health risk

Toxic and heavy metals contamination assessment in soil and water to evaluate human health risk

Short-term effects of cadmium and mercury on soil nematode communities in a pot experiment

Assessment of potentially toxic metal(loid)s contamination in soil near the industrial landfill and impact on human health: an evaluation of risk

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