Estimating low-toxic-effect concentrations in closed-system algal toxicity tests

Chen, Chung Yuan; Wang, Yun Ju; Yang, C.F.

doi:10.1016/j.ecoenv.2009.02.011

Cited by 19 publications

(10 citation statements)

References 27 publications

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“…Ethylbenzene is not expected to be susceptible to phototoxicity so this cannot explain the higher than expected toxicity that is observed. The ethylbenzene value reported by Chen et al [47] deviates from the observed trend with log K OW observed for other aromatic hydrocarbons in their study ( Figure 3A and Supplemental Data, Table S4). In contrast, benz[a]anthracene is known to be phototoxic in algae [50].…”

Section: Comparison Of Test Results With Literature Data and Predicticontrasting

confidence: 78%

“…The remaining 2 compounds (ethylbenzene, 48-h EC10 ¼ 232 mg/L, benz[a]anthracene, EC10 ¼ 0.5 mg/L) that fall below the HC5 prediction are from the study by Chen et al [47]. Ethylbenzene is not expected to be susceptible to phototoxicity so this cannot explain the higher than expected toxicity that is observed.…”

Section: Comparison Of Test Results With Literature Data and Predictimentioning

confidence: 96%

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Chronic toxicity of selected polycyclic aromatic hydrocarbons to algae and crustaceans using passive dosing

Bragin

Parkerton

Redman

et al. 2016

Enviro Toxic and Chemistry

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Because of the large number of possible aromatic hydrocarbon structures, predictive toxicity models are needed to support substance hazard and risk assessments. Calibration and evaluation of such models requires toxicity data with well-defined exposures. The present study has applied a passive dosing method to generate reliable chronic effects data for 8 polycyclic aromatic hydrocarbons (PAHs) on the green algae Pseudokirchneriella subcapitata and the crustacean Ceriodaphnia dubia. The observed toxicity of these substances on algal growth rate and neonate production were then compared with available literature toxicity data for these species, as well as target lipid model and chemical activity-based model predictions. The use of passive dosing provided well-controlled exposures that yielded more consistent data sets than attained by past literature studies. Results from the present study, which were designed to exclude the complicating influence of ultraviolet light, were found to be well described by both target lipid model and chemical activity effect models. The present study also found that the lack of chronic effects for high molecular weight PAHs was consistent with the limited chemical activity that could be achieved for these compounds in the aqueous test media. Findings from this analysis highlight that variability in past literature toxicity data for PAHs may be complicated by both poorly controlled exposures and photochemical processes that can modulate both exposure and toxicity. Environ Toxicol Chem 2016;35:2948-2957. © 2016 SETAC.

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Section: Comparison Of Test Results With Literature Data and Predicticontrasting

confidence: 78%

Section: Comparison Of Test Results With Literature Data and Predictimentioning

confidence: 96%

Chronic toxicity of selected polycyclic aromatic hydrocarbons to algae and crustaceans using passive dosing

Bragin

Parkerton

Redman

et al. 2016

Enviro Toxic and Chemistry

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show abstract

“…By comparison with the reported EC 50 or estimated NOEC using the quantitative structure-activity relationships (QSARs) model of Chen et al (2009), naphthalene and benzo[k]fluoranthene concentrations in CEWAF were lower Fig. 1 Optical density of T. tetrathele exposed to CEWAF and DISP for 72 h. Error bars represent standard error of the mean, n = 3 Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Improvement on the screening of chemical dispersants to be used during oil spills is therefore suggested to the concerned government agencies in the Philippines to ensure that the application of dispersant will not cause greater environmental damage than the oil spill itself. Chen et al (2009) …”

Section: Resultsmentioning

confidence: 99%

Acute Toxicity of Water-Accommodated Fraction and Chemically Enhanced WAF of Bunker C Oil and Dispersant to a Microalga Tetraselmis tetrathele

Santander-Avanceña

Sadaba

Taberna

et al. 2015

Bull Environ Contam Toxicol

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This study assessed the toxicity of water-accommodated fraction (WAF) and chemically enhanced WAF (CEWAF) of bunker C oil and dispersant (DISP) to a microalga, Tetraselmis tetrathele. The 72-h median effective concentration (72-h EC50) of CEWAF and DISP were determined at 3.30% and 2.40%, respectively. The no observed effect concentration (NOEC) of CEWAF to T. tetrathele was at 2.0% and lowest observed effect concentration (LOEC) was at 3.0% while NOEC and LOEC of DISP to T. tetrathele were determined at 1.0% and 2.0%, respectively. The addition of dispersant to oil increased the amount of total PAH present in the CEWAF test solutions. DISP alone was highly toxic, and the toxicity of CEWAF was primarily caused by the presence of dispersant.

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“…These studies focused on various aquatic organisms, such as fish, algae and daphnia (Harbers et al, 2006;Henning-De Jong et al, 2008). The ecological risk of contaminants to microalgae communities can be severely underestimated when based on the limited amount of data available from databases, which are primarily derived by the conventional bioassay protocols (Chen et al, 2009). With the PAM assay, all compounds in an extract that contribute to the effect are included, whereas with traditional monitoring, only a limited set of contaminants is determined.…”

Section: Introductionmentioning

confidence: 99%

Toxic pressure of herbicides on microalgae in Dutch estuarine and coastal waters

Booij

Sjollema

Geest

et al. 2015

Journal of Sea Research

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Estimating low-toxic-effect concentrations in closed-system algal toxicity tests

Cited by 19 publications

References 27 publications

Chronic toxicity of selected polycyclic aromatic hydrocarbons to algae and crustaceans using passive dosing

Chronic toxicity of selected polycyclic aromatic hydrocarbons to algae and crustaceans using passive dosing

Acute Toxicity of Water-Accommodated Fraction and Chemically Enhanced WAF of Bunker C Oil and Dispersant to a Microalga Tetraselmis tetrathele

Toxic pressure of herbicides on microalgae in Dutch estuarine and coastal waters

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