Screening of high phytotoxicity priority pollutants and their ecological risk assessment in China’s surface waters

Yan, Zhenguang; Wang, Weili; Zhou, Junli; Yi, Xiaoyan; Zhang, Juan; Wang, Xiaonan; Liu, Zhengtao

doi:10.1016/j.chemosphere.2015.01.015

Cited by 38 publications

(14 citation statements)

References 32 publications

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“…Interestingly, the most sensitive species were two aquatic plants for BBP and DBP, Pseudokirchneriella subcapitata and Lemna minor. The result was in accordance with 225 the previous study, in which aquatic plants showed greater sensitivities to BBP and 226 DBP than others (Yan et al, 2015). All the reproductive toxicity data of aquatic 227 species were used to generate SSD curves and the derived HC5 values for the four 228…”

Section: Derivation Of the Alcs For Four Paes Based On The Reproductisupporting

confidence: 79%

Derivation of aquatic life criteria for four phthalate esters and their ecological risk assessment in Liao River

et al. 2019

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As a critical family of endocrine disruptors, phthalate esters (PAEs) attracted considerable attentions due to increasingly detected worldwide. Aquatic life criteria (ALC) for PAEs are crucial for their accurate ecological risk assessment (ERA) and have seldom been derived before. Given this concern, the purpose of the present study is to optimize the ALCs of four priority PAEs to estimate their ecological risks in Liao River. Reproductive endpoint was found to be more sensitive than other endpoints. Thus, reproduction related toxicity data were screened to derive ALCs applying species sensitivity distribution (SSD) method. ALCs of DEHP, DBP, BBP 2 and DEP were calculated to be 0.04, 0.62, 4.71 and 41.9 μg•L-1 , which indicated decreased toxicity in sequence. Then, the derived ALCs of the four PAEs were applied to estimate their ecological risks in Liao River. A total of 27 sampling sites were selected to detect and analyze the exposure concentrations of PAEs. ERA using the hazard quotient (HQ) method was conducted. The results demonstrated that DEHP exhibited higher risks at 92.6% of sampling sites, and risks posed by DBP were moderate at 63.0% sampling sites. However, risks posed by BBP were low at 70.4% of sampling sites, and there were no risks posed by DEP at 96.3% of sampling sites. The results of probabilistic ecological risk assessment (PERA) indicated that probabilities of exceeding effects thresholds on 5% of species were 60.41%, 0%, 0.12%, 14.28% for DEHP, DEP, BBP and DBP, respectively. The work provides useful information to protect aquatic species in Liao River.

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Section: Derivation Of the Alcs For Four Paes Based On The Reproductisupporting

confidence: 79%

Derivation of aquatic life criteria for four phthalate esters and their ecological risk assessment in Liao River

et al. 2019

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“…In a phosphorus-rich environment, it has been reported that microalgae incorporate phosphorus as polyphosphate granules and these granules can bind metals, protecting the microorganisms from metal toxicity (Twiss & Nalewajko 1992, Rai et al 2001, Lavoie et al 2016. Also high phosphorus levels may alter the biochemical composition of the microalgae, promoting the synthesis of protective molecules such as phytochelatins (Hashemi et al 1994, Wang et al 2015.…”

Section: Generationmentioning

confidence: 99%

“…Ecotoxicological tests are helpful tools to estimate the combined toxic effects of chemicals in aquatic systems. Of the unicellular algal species, the Chlorophyceae Raphidocelis subcapitata (previously named Pseudokirchneriella subcapitata) is one of the most suitable for carrying out toxicity tests, due to its high sensitivity to a variety of contaminants, adequately maintainable in laboratory conditions (Wei et al 2006, Yan et al 2015, Lewis & Thursby 2018 and for being a characteristic species of oligotrophic and eutrophic freshwater systems (Blaise & Vasseur 2005).…”

Section: Introductionmentioning

confidence: 99%

Effect of phosphorus on the toxicity of zinc to the microalga Raphidocelis subcapitata

Rodgher

Contador

Rocha

et al. 2020

An. Acad. Bras. Ciênc.

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The aim of this study was to evaluate the effect of phosphorus (P) on the toxicity of zinc (Zn) for the alga Raphidocelis subcapitata. P was provided in three concentrations: 2.3 x 10-4 mol L-1 , 2.3 x 10-6 mol L −1 and 1.0 x 10-6 mol L −1. Algal cells were acclimated to the specifi c P concentrations before the start of the experiment. The chemical equilibrium software MINEQL + 4.61 was employed to calculate the Zn 2+ concentration. After acclimated, the algal cells were inoculated into media containing different Zn concentrations (0.09 x 10-6 mol L-1 to 9.08 x 10-6 mol L-1). The study showed that besides the reduction in algal growth rates, phosphorus had an important infl uence on the toxicity of zinc for microalga. The inhibitory Zn 2+ concentration values for R. subcapitata were 2.74 x 10-6 mol L-1 , 0.58 x 10-6 mol L-1 and 0.24 x 10-6 mol L-1 for the microalgae acclimated at P concentrations of 2.3 x 10-4 mol L-1 , 2.3 x 10-6 mol L-1 and 1.0 x 10-6 mol L-1 , respectively. Ecotoxicological studies should consider the interaction between metal concentrations and varying P values to provide realistic data of what occurs in phytoplankton communities in environments.

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“…To better assess the removal of wastewater pollutants from biodiesel production, chronic toxicity tests are often applied. Employing the Chlorophyceae unicellular alga Raphidocelis subcapitata, considered to be an important component in the aquatic ecosystem, is a common technique to measure chronic toxicity (Yan et al, 2015). Due to the lack of scientific work that describes effluent toxicity tests in biodiesel wash waters with R. subcapitata, the development of bioassays with this test organism for such effluent is extremely important.…”

Section: Introductionmentioning

confidence: 99%

TREATMENT OF WASTEWATER FROM BIODIESEL GENERATION AND ITS TOXICITY EVALUATION BY Raphidocelis subcapitata

Torres

Lima

Ferreira

et al. 2018

Braz. J. Chem. Eng.

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Biodiesel was developed to solve vast economic and environmental problems related to the use of petroleum as fuel. However, large quantities of water are necessary for biodiesel production, generating a high volume of effluent waste. Therefore, it is important to treat this wastewater in order to meet the environmental legislations according to the Brazilian Resolution Number 430/2011 (CONAMA). This work aimed to treat this effluent by coagulation/flocculation (CF) and an electrochemical advanced oxidation process. The combination of CF techniques (pH = 6.5) and electrochemical oxidation (boron doped diamond-BDD-electrode with NaCl) led to 78.5% removal of total organic carbon. The evaluation of the toxicity with Raphidocelis subcapitata indicated that the treated samples (IC50 72h = 1.66%) had lower chronic toxicity when compared to raw effluent samples (IC50 72h = 0.17%). This indicates that the proposed treatment was effective to decrease the organic load and reduce the environmental impact of these effluents in water bodies.

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Screening of high phytotoxicity priority pollutants and their ecological risk assessment in China’s surface waters

Cited by 38 publications

References 32 publications

Derivation of aquatic life criteria for four phthalate esters and their ecological risk assessment in Liao River

Derivation of aquatic life criteria for four phthalate esters and their ecological risk assessment in Liao River

Effect of phosphorus on the toxicity of zinc to the microalga Raphidocelis subcapitata

TREATMENT OF WASTEWATER FROM BIODIESEL GENERATION AND ITS TOXICITY EVALUATION BY Raphidocelis subcapitata

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