Removal of persistent DDT residues from soils by earthworms: A mechanistic study

Xu, Huijuan; Bai, Jing; Li, Wenyan; Zhao, Li‐Xia; Li, Yongtao

doi:10.1016/j.jhazmat.2018.11.043

Cited by 26 publications

(25 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4 (detailed data in Table EMS2 ). The assumption we made was based on the knowledge that many microorganisms which could degrade DDT show higher degradation capability under neutral and alkaline pH (Wang et al 2010 ; Pan et al 2016 ), even though also the composition of the soil microbiome could impact on the degradation capacity of DDT both directly (Regar et al 2019 ; Gaur et al 2018 ) or indirectly, e.g., through the action of earthworms (Xu et al 2019 ). However, the Pearson correlation coefficient ( R = −0.26, p = 0.043) indicated a weak negative correlation between DDT concentration and pH (Fig.…”

Section: Resultsmentioning

confidence: 99%

Monitoring of DDT in Agricultural Soils under Organic Farming in Poland and the Risk of Crop Contamination

Malusà

Tartanus

Danelski

et al. 2020

Environmental Management

View full text Add to dashboard Cite

The analysis of 142 agricultural soil samples collected in organic farms across Poland with the intent to evaluate the level of DDT contamination resulted in more than 80% of the soils containing DDT. The ΣDDT (sum of all metabolites and isomers) concentration ranged between 0.005 and 0.383 mg/kg ΣDDT, with an average value of 0.064 mg/kg ΣDDT. However, the majority of plant samples collected from the crops growing on the sampled soils did not contain detectable DDT residues. The high DDT pollution levels detected in samples from four voivodeships (regions) among those monitored have been hypothesised to be linked to horticultural productions occurring to the sampled fields and typical of those regions, particularly in big-sized farms, during the period of DDT application, as well as the number of pesticides landfills present in these voivodeships. The elaboration of the o,p′-DDT/p,p′-DDT and DDT/(DDE + DDD) ratios to appraise the source or the period of contamination suggested that the contamination originated from past use of DDT rather than from impurities of more recent applications of other formulated substances. Such outcome thus suggests that the risk of contamination of organic products is likely derived from general environmental pollution levels rather than from the use of unauthorised substances in organic farming productions. Data from a trial with artificial contamination of soils indicated that using the DDT/(DDE + DDD) ratio in the presence of a low level of contamination could be less reliable than in highly contaminated soils.

show abstract

Section: Resultsmentioning

confidence: 99%

Monitoring of DDT in Agricultural Soils under Organic Farming in Poland and the Risk of Crop Contamination

Malusà

Tartanus

Danelski

et al. 2020

Environmental Management

View full text Add to dashboard Cite

show abstract

“…As an endogeic species (Lin et al, 2016), A. robustus feeds on soil mineral particles and makes burrows through soil to Table 5 Stepwise regression between DTPA extracted heavy metals, soil organic C and N along with the components as well as BSAF of earthworms. Expand Xiao et al Ecotoxicology and Environmental Safety xxx (xxxx) xxx-xxx move around (Lin et al, 2012;Xu et al, 2019). Not only the biomass of A. robustus individual was higher than that of A. corticis, but also the survival rate of A. robustus was higher than that of A. corticis (Table 1).…”

Section: Characteristics Of Earthworms In Different Speciesmentioning

confidence: 96%

“…Heavy metals combined with soil minerals might be released during intestinal digestion by endogeic earthworms (Sizmur and Hodson, 2009). Compared to epigeic earthworms, endogeic earthworms tend to make burrows and move frequently in soil (Lin et al, 2012;Xu et al, 2019)., and hence have greater impact on heavy metal bioavailability in soil.…”

Section: Influence Of Earthworms On Dtpa Extracted Heavy Metalsmentioning

confidence: 99%

Assessment of earthworm activity on Cu, Cd, Pb and Zn bioavailability in contaminated soils using biota to soil accumulation factor and DTPA extraction

Liu

Dai

et al. 2020

Ecotoxicology and Environmental Safety

View full text Add to dashboard Cite

The study aims to investigate effect of earthworm activity on metal bioavailability in soils using their BSAF-metals. Based on a microcosmic laboratory experiment, epigeic species Amynthas corticis (A. corticis) and endogeic species Amynthas robustus (A. robustus) were cultured in two types of soils contaminated by Cd, Zn, Pb and Cu for 120 days. Earthworm characteristics (i.e. numbers, biomass and BSAF), soil properties (i.e. pH, organic C and N contents along with their components such as mineralization and microbial masses) and DTPA extracted metals in soil were determined. After the incubation, the biomass and survival numbers of both earthworm species decreased significantly (P < 0.05). The accumulation of Cd, Zn and Pb in earthworm tissues and BSAF-metals were earthworm species dependent. According to two-way ANOVA, BSAF-Pb clearly showed the effect of different species of earthworms while BSAF-Cu indicated an interactive effect of earthworms and soil type. Earthworms changed soil properties significantly, especially for mineralized C (C min), dissolved N (N dis) and pH (P < 0.05). Earthworm activity increase DTPA extracted Zn and Cu, and the effect of A. robustus were stronger than for A. corticis. Redundancy analysis (RDA) showed that BSAF-Cu and BSAF-Pb contributed for respectively 51.9% and 51.7% of soil properties and DTPA metal changes, indicating that the effects of BSAF-Cu and BSAF-Pb on soil properties and on metal bioavailability in soil were similar. BSAF-Cu, indicating the interactive effect of earthworms and soil, accounted for 38.5% and 45.1% of soil properties and soil metal bioavailability changes. BSAF-Pb, representing the effect of earthworm species, accounted for 13.3% and 6.6% of soil property and soil metal bioavailability variations. Stepwise regression indicated that earthworm might change soil properties through their activities and interactions with soil, and hence increase heavy metal bioavailability. It suggested that BSAF is an important indicator for evaluating the effect of earthworm activity on soil metal bioavailability and designing remediation strategies.

show abstract

“…The PAHs metabolic rate was significantly related to nidA and nahAc gene contents. Xu, Bai, Li, Bai, Li, Zhao, and Li (2019) reported that earthworms enhanced the removal of DDT residues from the contaminated soil, through the microbial digestion and promotion of DDT by indigenous microorganisms due to improvement of soil properties. Mallick and Chakraborty (2019) studied the biological treatment of wastewater from an automobile service station.…”

Section: Biological Treatmentmentioning

confidence: 99%

Hazardous wastes treatment technologies

Shih

et al. 2020

Water Environment Research

View full text Add to dashboard Cite

show abstract

Removal of persistent DDT residues from soils by earthworms: A mechanistic study

Cited by 26 publications

References 47 publications

Monitoring of DDT in Agricultural Soils under Organic Farming in Poland and the Risk of Crop Contamination

Monitoring of DDT in Agricultural Soils under Organic Farming in Poland and the Risk of Crop Contamination

Assessment of earthworm activity on Cu, Cd, Pb and Zn bioavailability in contaminated soils using biota to soil accumulation factor and DTPA extraction

Hazardous wastes treatment technologies

Contact Info

Product

Resources

About