Phenomenological and spectroscopic analysis on the effects of sediment ageing and organic carbon on the fate of a PCB congener spiked to sediment

Choi, Hyeok; Nfodzo, Prince; Lawal, Wasiu A.; Al-Abed, Souhail R.; Seo, Young-Woo

doi:10.1016/j.jhazmat.2012.09.001

Cited by 12 publications

(4 citation statements)

References 22 publications

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“…In addition, a decline in bioavailability of persistent chemicals due to ageing processes is reported in the scientific literature (e.g. Landrum et al, 1992;Alexander, 2000;Choi et al, 2012;Nybom et al, 2015). Since a 7-day equilibrium phase after spiking was used in all toxicity tests described in the present paper, the possible decline in bioavailability due to ageing processes was most likely similar in all tests.…”

Section: Interpreting Results Of Sediment-spiked Toxicity Testsmentioning

confidence: 64%

Toxicity of sediment-bound lufenuron to benthic arthropods in laboratory bioassays

et al. 2018

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This paper deals with species sensitivity distributions (SSDs) for the lipophilic insecticide lufenuron and benthic arthropods based on sediment-spiked laboratory toxicity tests. This compound that inhibits chitin synthesis and moulting of arthropods persists in sediment. Using field-collected sediment, toxicity tests were conducted with three macro-crustaceans and six insects. The Hazardous Concentration to 5% of the tested species, the HC5 (and 95% confidence limit), derived from an SSD constructed with 10d-LC50's was 2.2 (1.2-5.7) μg/g organic carbon (OC) in dry sediment. In addition, HC5 values derived from SSDs constructed with 28d-LC10 and 28-d LC50 values were 0.13 (0.02-1.50) μg/g OC and 2.0 (1.3-5.5) μg/g OC, respectively. In 28d toxicity tests with Chironomus riparius and Hyalella azteca, a higher sensitivity was observed when using lufenuron-spiked field-collected sediment than in lufenuron-spiked artificial sediment. Overall, the non-biting midge C. riparius appeared to be a representative and sensitive standard test species to assess effects of lufenuron exposure in sediment. The Tier-1 (based on standard test species), Tier-2 (based on standard and additional test species) and Tier-3 (model ecosystem approach) regulatory acceptable concentrations (RACs) for sediment-spiked lufenuron did not differ substantially. The Tier-2 RAC was the lowest. Since to our knowledge this study is the first in the open literature that evaluates the tiered approach in the sediment effect assessment procedure for pesticides, we advocate that similar evaluations should be conducted for pesticides that differ in toxic mode-of-action.

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Section: Interpreting Results Of Sediment-spiked Toxicity Testsmentioning

confidence: 64%

Toxicity of sediment-bound lufenuron to benthic arthropods in laboratory bioassays

et al. 2018

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“…The relatively short ageing period in our tests performed in China may have caused an initial higher bioavailability of udioxonil in the total sediment and sediment pore water, compared to that of the sediment used in the tests conducted in the Netherlands. A decline in bioavailability of persistent organic chemicals due to ageing processes is reported in the scienti c literature (Alexander 2000;Choi et al 2012;Landrum et al 1992;Nybom et al 2015).…”

Section: Discussionmentioning

confidence: 98%

Species Sensitivity Distributions of Benthic Macroinvertebrates in Fludioxonil-Spiked Sediment Toxicity Tests

Sun¹,

Xiao

Yin³

et al. 2022

Arch Environ Contam Toxicol

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In China, the fungicide udioxonil, that accumulates and persists in sediments, has a widespread agricultural use to control various fungal diseases. Its residues may cause toxic effects to benthic aquatic fauna, thereby impacting ecosystem service functions of aquatic ecosystems. To assess the potential environmental effects of udioxonil in the sediment compartment of edge-of-eld surface waters, sediment-spiked single-species toxicity tests with benthic macroinvertebrates were performed. In all experiments arti cial sediment was used with an organic carbon content of 2.43% on dry weight basis. The single-species tests were conducted with 8 benthic macroinvertebrates covering different taxonomic groups typical for the Yangtze River Delta, China. The 28d-EC 10 and 28-LC 10 values thus obtained were used to construct species sensitivity distributions (SSDs). In addition, our data were supplemented with similar udioxonil-spiked sediment toxicity data for benthic invertebrates from the Netherlands. Based on SSDs constructed with 28d-EC 10 values of 8 benthic species from our experiments in China, hazardous concentrations to 5% of the species tested (HC 5 's) of respectively 0.57 mg udioxonil/kg dry weight sediment and 5.4 µg udioxonil/L pore water were obtained. Supplementing our data from China with 8 similar toxicity data for other benthic species from the Netherlands, these HC 5 values became respectively 1.2 mg udioxonil/kg dry weight sediment and 11 µg udioxonil/L pore water.

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“…. A decline in bioavailability of persistent organic chemicals due to ageing processes is reported in the scienti c literature (e.g Landrum et al, 1992;Alexander, 2000;Choi et al, 2012;. Nybom et al, 2015).…”

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confidence: 93%

Impact of Sediment-Spiked Fludioxonil On Benthic Macroinvertebrates And Zooplankton From The Yangtze River Delta, China

Sun

Xiao

Xiao-hui

et al. 2021

Preprint

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In China, the fungicide fludioxonil, that accumulates and persists in sediments, has a widespread agricultural use to control various fungal diseases. Its residues may cause toxic effects to benthic and pelagic aquatic fauna, thereby impacting ecosystem service functions of aquatic ecosystems.To assess the environmental risks of fludioxonil, sediment-spiked single-species toxicity tests with benthic macroinvertebrates as well as a sediment-spiked indoor freshwater microcosm experiment were performed. The microcosm test systems were populated with benthic invertebrates also used in the single-species tests. In all experiments artificial sediment was used. The single-species tests were conducted with 8 benthic macroinvertebrates covering different taxonomic groups typical for the Yangtze River Delta, China. The 28d-EC10 values thus obtained were used to construct species sensitivity distributions (SSDs) and the hazardous concentration to 5% of the species tested (HC5) was used to derive a provisional long-term Tier-2 regulatory acceptable concentration (RAC) for benthic invertebrates by applying an assessment factor of 3.The microcosm experiment was conducted to study treatment-related responses of benthic macroinvertebrates and pelagic zooplankton. The lowest No Observed Effect Concentrations (NOECs) of benthic invertebrate and of pelagic zooplankton populations were used to derive provisional long-term Tier-3 RACs for, respectively, benthic and pelagic invertebrates by applying an assessment factor of 2. The RACs thus obtained were compared with Predicted Environmental Concentrations (PECs) of fludioxonil in overlying water and the sediment compartment of edge-of-field ponds after application of this fungicide in rice, grape, wheat, maize and tomato crops. Overall, the risks of long-term exposure of fludioxonil to benthic invertebrates and pelagic zooplankton species in these Chinese edge-of-field ponds appear to be relatively small, but some risks cannot be excluded for ponds adjacent to rice.

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Phenomenological and spectroscopic analysis on the effects of sediment ageing and organic carbon on the fate of a PCB congener spiked to sediment

Cited by 12 publications

References 22 publications

Toxicity of sediment-bound lufenuron to benthic arthropods in laboratory bioassays

Toxicity of sediment-bound lufenuron to benthic arthropods in laboratory bioassays

Species Sensitivity Distributions of Benthic Macroinvertebrates in Fludioxonil-Spiked Sediment Toxicity Tests

Impact of Sediment-Spiked Fludioxonil On Benthic Macroinvertebrates And Zooplankton From The Yangtze River Delta, China

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