Prediction of freshwater ecotoxicological hazardous concentrations of major surfactants using the QSAR–ICE–SSD method

Environment International, Год журнала: 2024, Номер 185, С. 108472 - 108472

Опубликована: Фев. 3, 2024

Synthetic surfactant products are continuously released into the aquatic environment in large quantities, posing a burden on ecosystems as "pseudo–persistent" organic pollutant. Threshold derivation for protecting is challenging due to various homologous components of surfactants. In this study, five commercially available were chosen representative major types Corresponding quantitative structure–activity relationships (QSAR) screened and subsequently combined with interspecific correlation estimation (ICE) develop species sensitivity distributions (SSDs) each component. Then, 5th percentile hazard concentrations (HC5s) calculated. The results indicated that developed QSAR–ICE models demonstrated good toxicity prediction performance. HC5 component showed negatively alkyl chain length positive amount ethylene oxide. HC5s surfactants correlate variations their charged properties. Quaternary ammonium compounds (QAC) exhibited lowest (8.5 ± 18.3 μg/L), followed by alcohol ethoxylates (AE), linear alkylbenzene sulfonates (LAS), ethoxylated sulfates (AES); oxide (AO) highest (15784.2 21552.6 μg/L). For cationic surfactants, invertebrates significantly lower than those fish; conversely, anionic opposite was true, indicating difference toxic mechanisms different properties across taxa. Additionally, among invertebrates, shellfish heightened owing high accumulation low metabolism pollutants. Salmoniformes most sensitive all species, necessity prioritizing these ecological conservation surfactant-contaminated waters.

Язык: Английский

---

Concentration levels and ecological risk assessment of typical organophosphate esters in representative surface waters of a megacity

Environmental Research, Год журнала: 2024, Номер 251, С. 118614 - 118614

Опубликована: Март 8, 2024

Язык: Английский

---

Freshwater water quality criteria for phthalate esters and recommendations for the revision of the water quality standards

Ecotoxicology and Environmental Safety, Год журнала: 2024, Номер 279, С. 116517 - 116517

Опубликована: Май 27, 2024

With increasing urbanization and rapid industrialization, more environmental problems have arisen. Phthalates (PAEs) are the foremost most widespread plasticizers readily emitted from these manufactured products into environment. PAEs act as endocrine-disrupting chemicals (EDCs) can serious impacts on aquatic organisms well human health. In this study, water quality criteria (WQC) of five (dimethyl phthalate (DMP), diethyl (DEP), dibutyl (DBP), butyl benzyl (BBP) di(2-ethylhexyl) (DEHP)) for freshwater were developed using a species sensitivity distribution (SSD) toxicity percentage ranking (TPR) approach. The results showed that long-term (LWQC) SSD method could be 13.7, 11.1, 2.8, 7.8, 0.53 μg/L, respectively. Criteria continuous concentrations (CCC) derived TPR determined to 28.4, 13.1, 1.3, 2.5, 1.6 commonly measured in China surface waters at between ng/L μg/L. DBP, DEHP, di-n-octyl (DnOP) frequently detected PAEs, with occurrence rates ranging 67% 100%. ecological risk assessment decreasing order national level, DMP, DEP, DnOP. study will great benefit other countries revising standards conservation species.

Язык: Английский

---

Predicting environmental risks of pharmaceutical residues by wastewater surveillance: An analysis based on pharmaceutical sales and their excretion data

The Science of The Total Environment, Год журнала: 2024, Номер 916, С. 170204 - 170204

Опубликована: Янв. 21, 2024

Язык: Английский

---

Time Is Ripe for Targeting Per- and Polyfluoroalkyl Substances-Induced Hormesis: Global Aquatic Hotspots and Implications for Ecological Risk Assessment

Environmental Science & Technology, Год журнала: 2024, Номер 58(21), С. 9314 - 9327

Опубликована: Май 6, 2024

Globally implemented ecological risk assessment (ERA) guidelines marginalize hormesis, a biphasic dose–response relationship characterized by low-dose stimulation and high-dose inhibition. The present study illuminated the promise of hormesis as scientific model for ERA per- polyfluoroalkyl substances (PFAS) represented perfluorooctanoic acid (PFOA) perfluorooctanesulfonic (PFOS). A total 266 hormetic relationships were recompiled from 1237 observations, covering 30 species nine representative taxonomic groups. standardized amplitudes followed log-normal probability distribution, being subject to limits biological plasticity but independent stress inducers. SHapley Additive exPlanations algorithm revealed that target endpoint was most important variable explaining amplitudes. Subsequently, quantitative frameworks established incorporate into predicted no-effect concentration levels, with lower induction dose zero-equivalent point broader zone PFOS. Realistically, 10,117 observed concentrations PFOA PFOS gathered worldwide, 4% which fell within zones, highlighting environmental relevance hormesis. Additionally, potential identified in other legacy emerging PFAS well their alternatives mixtures. Collectively, it is time concept studies facilitate more realistic characterizations.

Язык: Английский

---

Occurrence and potential environmental risk assessment of alkylphenols and bisphenols in surface water collected in rivers flowing through Bac Ninh, Vietnam

Journal of Water and Health, Год журнала: 2024, Номер 22(7), С. 1235 - 1247

Опубликована: Май 25, 2024

ABSTRACT In recent decades, increasing attention has been directed toward the effects of alkylphenols and bisphenols due to their demonstrated endocrine-disruptive effects. This study investigated occurrence potential risk assessment two seven in surface water collected from rivers (Cau River, Duong Thai Binh River) flowing through Bac Ninh province, one pivotal economic regions North Vietnam. The results that these compounds were widely distributed rivers. average concentrations ranked as follows: 4-tert-octylphenol (4-t-OP) (91.2 ng/L) > 4-nonylphenol (4-NP) (78.9 bisphenol S (BPS) (72.4 A (BPA) (5.6 F (BPF) (below method detection limit) with frequencies 100% (except for BPF 23%). presence aquatic environments closely correlates anthropogenic activity. environmental was carried out based on Risk Quotient (RQ) evaluation, indicating 4-NP poses medium all three addition, 4-t-OP, which is more toxic than 4-NP, high organisms River (RQ = 1.1), while BPA BPS show low < 0).

Язык: Английский

---

ICE-SSD Model: Bridging the Ecological Risk Assessment Gap between Plasticizer and the Substitute

ACS ES&T Water, Год журнала: 2025, Номер unknown

Опубликована: Янв. 6, 2025

The eco-safety of plasticizer alternative di-isobutyl phthalate (DiBP) has received continued concerns owing to its large usage as a and high detection frequency in environments. concentrations dibutyl (DBP) DiBP the surface waters ranged from ng/L μg/L. However, accurate ecological risk assessment alternatives is limited by data on toxic effects potencies. interspecies correlation estimation (ICE) model combined with species sensitivity distribution (SSD) was used assess DBP DiBP. acute reproductive predicted no-effect (PNECs) were derived 0.05 mg/L 1.23 μg/L for 0.16 0.51 based ICE-SSD models. Our results showed that risks (risk quotient (RQ) < 0.1) mainland China waterbodies, except Hangzhou Bay, acceptable. quotients indicated Yangtze River (RQ = 1.55 0.48), Hun 1.74 6.03), Bay 7.33 13.49) had relatively levels PNECs Furthermore, joint probability curves needed further concern. Thus, could effectively compensate lack toxicity assessment.

Язык: Английский

---

The global research trends and hotspots on phthalate esters (PAEs): A comprehensive visualization and bibliometric analysis (2000-2023)

Environmental Chemistry and Ecotoxicology, Год журнала: 2025, Номер 7, С. 381 - 393

Опубликована: Янв. 1, 2025

Язык: Английский

---

Worst case scenario for chronic mixed ecotoxicity, assessment of ecological and human health risks from contaminants in an important economic harbor connected to the Mediterranean Sea, Egypt

The Science of The Total Environment, Год журнала: 2025, Номер 970, С. 178975 - 178975

Опубликована: Март 1, 2025

Язык: Английский

---

Advancing aquatic ecological risk assessment of imidacloprid in global surface water with mesocosm-based thresholds

Water Research, Год журнала: 2025, Номер 282, С. 123728 - 123728

Опубликована: Апрель 26, 2025

Язык: Английский

---