Acute toxicity and risk assessment of perfluorooctanoic acid (PFOA) and perfluorooctanesulfonate (PFOS) in tropical cladocerans Moina micrura.

Autor: Razak MR; Department of Environment, Faculty of Forestry and Environment, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia., Aris AZ; Department of Environment, Faculty of Forestry and Environment, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; International Institute of Aquaculture and Aquatic Sciences, Universiti Putra Malaysia, 71050 Port Dickson, Negeri Sembilan, Malaysia. Electronic address: zaharin@upm.edu.my., Zainuddin AH; International Institute of Aquaculture and Aquatic Sciences, Universiti Putra Malaysia, 71050 Port Dickson, Negeri Sembilan, Malaysia., Yusoff FM; International Institute of Aquaculture and Aquatic Sciences, Universiti Putra Malaysia, 71050 Port Dickson, Negeri Sembilan, Malaysia; Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia., Balia Yusof ZN; Department of Biochemistry, Faculty of Biotechnology and Biomolecular Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia., Kim SD; School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, 61005 Buk-gu, Gwangju, Republic of Korea., Kim KW; School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, 61005 Buk-gu, Gwangju, Republic of Korea.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2023 Feb; Vol. 313, pp. 137377. Date of Electronic Publication: 2022 Nov 26.
DOI: 10.1016/j.chemosphere.2022.137377
Abstrakt: Per- and polyfluoroalkyl substances (PFAS) are gaining worldwide attention because of their toxicity, bioaccumulative and resistance to biological degradation in the environment. PFAS can be categorised into endocrine disrupting chemicals (EDCs) and identified as possible carcinogenic agents for the aquatic ecosystem and humans. Despite this, only a few studies have been conducted on the aquatic toxicity of PFAS, particularly in invertebrate species such as zooplankton. This study evaluated the acute toxicity of two main PFAS, perfluorooctanoic acid (PFOA) and perfluorooctanesulfonate (PFOS), by using freshwater cladocerans (Moina micrura) as bioindicators. This study aimed to assess the adverse effects at different levels of organisations such as organ (heart size and heart rate), individual (individual size and mortality) and population (lethal concentration, LC 50 ). PFOA was shown to be more hazardous than PFOS, with the LC 50 values (confidence interval) of 474.7 (350.4-644.5) μg L -1 and 549.6 (407.2-743.9) μg L -1 , respectively. As the concentrations of PFOS and PFOA increased, there were declines in individual size and heart rate as compared to the control group. The values of PNECs acquired by using the AF method (PNEC AF ) for PFOA and PFOS were 0.4747 and 0.5496 μg L -1 , respectively. Meanwhile, the PNEC values obtained using the SSD method (PNEC SSD ) were 1077.0 μg L -1 (PFOA) and 172.5 μg L -1 (PFOS). PNEC AF is more protective and conservative compared to PNEC SSD . The findings of this study have significant implications for PFOS and PFOA risk assessment in aquatic environments. Thus, it will aid freshwater sustainability and safeguard the human dependency on water resources.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2022 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: