Showing papers on "Bioaccumulation published in 2021"
TL;DR: In this paper, the toxic effects of microplastics in fish through various indicators were examined, including bioaccumulation, hematological parameters, antioxidant responses, immune responses, and neurotoxicity in relation to MP exposure.
147 citations
TL;DR: In this paper, the authors reviewed the research published in the last decade on the global occurrence and distribution of per-and polyfluoroalkyl substances (PFAS) in the aquatic environment and the evolving global regulatory responses to manage and mitigate the adverse human health risks posed by PFAS.
119 citations
TL;DR: In this paper, the status and sources of contamination and phytoremediation capability of Typha latifolia L. in the Bahmanshir River of Iran were determined.
59 citations
TL;DR: A literature search for bioconcentration factors (BCFs) and bioaccumulation factors (BAFs) for PFAS has been done, and data for 22 taxonomic classes were assembled.
Abstract: Per- and polyfluoroalkyl substances (PFAS) are a group of man-made chemicals of concern across the globe, and some of the PFAS chemicals are known to be bioaccumulative in aquatic species. A literature search for bioconcentration factors (BCFs) and bioaccumulation factors (BAFs) for PFAS has been done, and data for 22 taxonomic classes were assembled. The assembled data were evaluated for quality, and for gaps and limitations in bioaccumulation information for the PFAS universe of chemicals. In general, carbonyl and sulfonyl PFAS classes are relatively data rich, whereas phosphate, fluorotelomer, and ether PFAS classes are data limited for fish and nonexistent for most other taxonomic classes. Taxonomic classes with the most measurements were, in descending order, Teleostei (fish), Bivalvia, and Malacostraca. For fish, median whole-body log BAFs (L/kg wet wt) for perfluorooctane sulfonic acid and perfluorooctanoic acid were 3.55 (standard deviation [SD] = 0.83, n = 84) and 2.16 (SD = 0.85, n = 48) using all measurements, respectively. In comparison with freshwater species, data are limited for marine species, and further research is needed to determine whether the BAFs for freshwater and marine species should be the same or different. The BAFs for some PFAS appear to be consistent with the BCFs developed with laboratory experiments, in which values decline with increasing concentrations in water. Environ Toxicol Chem 2021;40:1530-1543. Published 2021. This article is a U.S. Government work and is in the public domain in the USA.
56 citations
TL;DR: Rutile nano- TiO2 (NRT) at 1000 mg/L presented to be a promising candidate for controlling arsenic uptake by the exposed rice seedlings, with no significant oxidative stress by the amended nano-TiO2, thereby mitigating health risk of arsenic to humans via food chain.
56 citations
TL;DR: In this paper, a review spotlights various analytical detection, regulatory, and mitigation considerations for efficiently removing hazardous pesticides from the environment, focusing on detecting and quantifying multiple pesticides and removing the pesticides present in the specific matrix without creating harmful derivatives.
49 citations
TL;DR: In this article, both the single and combined effects of polyethylene (PE, 10 and 40 µm) with the particle size of 100-150 µm and 9-Nitroanthracene (9-NAnt, 5 and 500 µmg/L) on zebrafish (Danio rerio) had been investigated.
46 citations
TL;DR: The human health risks of OPEs associated with fish consumption is at low level and they significantly increased with increasing their log KOW values, results showed.
46 citations
TL;DR: This study summarised and explained the recent applications of surface-modified nanoparticles for the detection of residual pesticides and localised surface plasmon resonance in nanoparticles-based colorimetric assays.
Abstract: Extensive and erratic use of pesticides leads to bioaccumulation of pesticides in soil, food and waterbodies. Exposure to pesticides is associated with a number of serious diseases, including cance...
43 citations
TL;DR: Significantly negative correlation was observed between the log Dow and log BAF values (p < 05), indicating that log Dow is a good predictor of antibiotics bioaccumulation potential in marine organisms.
43 citations
TL;DR: It was found that nZVI-BC exhibited remarkable performance for the stabilization of Cd and As in soil, and their availability decreased, and hence effectively decreased the cancer risks by 38.19-42.93% related with vegetable consumption.
TL;DR: In this article, the authors investigated various toxic effects of ammonia nitrogen, including oxidative stress, neurotoxicity and immune response, in fish exposed to toxicants, and concluded that ammonia-induced toxicity is mainly caused by bioaccumulation in certain tissues.
Abstract: Ammonia nitrogen is the major oxygen-consuming pollutant in aquatic environments. Exposure to ammonia nitrogen in the aquatic environment can lead to bioaccumulation in fish, and the ammonia nitrogen concentration is the main determinant of accumulation. In most aquatic environments, fish are at the top of the food chain and are most vulnerable to the toxic effects of high levels of ammonia nitrogen exposure. In fish exposed to toxicants, ammonia-induced toxicity is mainly caused by bioaccumulation in certain tissues. Ammonia nitrogen absorbed in the fish enters the circulatory system and affects hematological properties. Ammonia nitrogen also breaks balance in antioxidant capacity and causes oxidative damage. In addition, ammonia nitrogen affects the immune response and causes neurotoxicity because of the physical and chemical toxicity. Thence, the purpose of this review was to investigate various toxic effects of ammonia nitrogen, including oxidative stress, neurotoxicity and immune response.
TL;DR: The concentration of DTPA extractable heavy metals, Cd, Cu, Cr, Pb, and Zn in vermicasts and tissues of the earthworms collected from the soils of four different industrial sites showed lower heavy metal loads with improved physicochemical properties and elevated humic substances.
TL;DR: In this paper, the impacts of microplastics on bioaccumulation of heavy metals in vegetables in terrestrial environment are seldom investigated, however, batch experiments were carried out, the microplastic (0.001, 0.01%, 0.1%) and heavy metal (50, 100,mg/kg Cu2+ or 25, 50, 50μg/kg Pb2+) were single or combined spiked into soil to cultivate rapes (Brassica napus L.) in greenhouse.
TL;DR: In this article, the effect of PVC MP exposure on increasing the risk of perfluorooctane sulfonate (PFOS) and perfluoric acid bioaccumulation in earthworms in addition to their reproduction was investigated.
Abstract: The accumulation of microplastics (MP) in soil via their continuous release and degradation of large plastics has recently become a serious global problem. The major concern with MP is their potential to sorb pollutants as well as ingestion by living organisms. Hence, this study focused on the effect of PVC MP exposure on increasing the risk of perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) bioaccumulation in earthworms in addition to their reproduction. In general, the bioaccumulation factor (BAF) for PFOA and PFOS increased up to 200% in earthworms exposed to MP-contaminated soil. MP at 500 and 1000 mg kg −1 soil caused enhanced uptake of PFOS and PFOA in earthworms, and a significant reduction in their reproduction. These results have significant implications for risk assessment of MP in soil.
TL;DR: In this article, a review has been conducted with an objective to highlight the concerns surrounding TCS exposure to aquatic organisms, the infiltration routes into the food chain, its persistence and accumulation, teratogenic, biochemical and cytogenic effects on a wide range of aquatic species.
Abstract: Triclosan (TCS), a lipophilic broad-spectrum biocide is widely used in personal care, acrylic, veterinary, medical and household products. It has been observed to be present in aquatic environments, animal and plant tissues around the world, and even in human blood, urine and breast milk. Under natural conditions, TCS degrades photolytically as well as through microbial action into more persistent and toxic byproducts like dioxins. Moreover, accumulation in deep water bodies or soil strata where light is not adequately available makes its degradation even more prolonged. Present review has been undertaken with an objective to highlight the concerns surrounding TCS exposure to aquatic organisms, the infiltration routes into the food chain, its persistence and accumulation, teratogenic, biochemical and cytogenic effects on a wide range of aquatic species. The widespread use of products containing TCS and potential toxicity at lethal concentrations makes it a compound of utmost concern worldwide and hence its use under permissible levels, proper disposal needs to be regulated.
TL;DR: In this article, the physicochemical properties of polystyrene NPs (PS-NPs: 50nm) and microplastics (MPs: 300mm, 600mm, 4μm) in the gastrointestinal tract were investigated.
TL;DR: The current study is pioneer in showing that PS NPs can affect the health of the investigated larvae, even at small concentrations, for short exposure-time; this outcome reinforces the ecotoxicological risk of these pollutants for freshwater benthic macroinvertebrates.
TL;DR: The results showed limited adverse effects due to the consumption of these products with an exception of fluoroquinolone antibiotics, and a relatively unsteady status in terms of bioaccumulation potential of cultured freshwater ponds yearly.
TL;DR: In this article, the authors integrated a GIS-based survey of metal concentrations in soil and a probabilistic quantitative risk assessment of Pb through the food chain, and highlighted the significance of limiting Pb concentrations in the vegetable producing agricultural soil.
TL;DR: In this article, a review was performed aiming to identify the Gd concentrations in marine and freshwater environments, revealing concentrations from 0.347 to 80 μg/L, with the highest Gd anomalies found close to highly industrialized areas.
TL;DR: The modeled steady-state concentrations of PBDEs in cod tissue lipid through ingestion of MPs under the most likely conditions were below the lower end of the global PBDE concentration, implicating that ingestion of MP by organisms remains a negligible pathway in general.
TL;DR: Information summarized in this study highlights the importance to re-consider the current straw return policy, particularly in metal-contaminated farmlands, because poor understanding of straw return-induced increases in metal bioavailability would add uncertainty in assessing or mitigating risks of metals in contaminated farming soils.
TL;DR: In this paper, heavy metal content in water, sediment, and tissues of six commonly used edible fishes from Adyar estuary, southeast coast of India, was assessed for metal bioaccumulation.
TL;DR: Positive relationships were found between TBBPA concentrations and trophic levels of the biota species with troPHic magnification factors of 2.17 for the PRE and 1.22 for the JRE, suggesting that T BBPA biomagnifies in the mangrove food webs.
TL;DR: Comparing two bioaccumulation pathways of the additive hexabromocyclodododecane (HBCD) by exposing mussels to two different sizes of expanded polystyrene shows that uptake through the aqueous phase is a more significant pathway for bio Accumulation of HBCD from EPS to mussels than particle ingestion.
TL;DR: Results support urgent action on managing the impact of pharmaceuticals in coastal environments, striving for improved monitoring schemes tailored to the dynamic nature and ecological diversity of estuaries and coastal ecosystems.
TL;DR: Overall results suggest, mercury species found in different AGMPs compartments should be monitored in this region, and bioaccumulation and biomagnification of MeHg were higher in the carnivores representing a source of exposure and potential threat to human health.
TL;DR: In this paper, the authors present the first known published data on the bioaccumulation and trophic transfer characteristics of PFECAs in a source-impacted estuary.
Abstract: As novel alternatives to legacy poly- and perfluoroalkyl substances (PFAS), perfluoroalkyl ether carboxylic acids (PFECAs) have been widely detected in the environment; however, there is limited information and knowledge regarding their bioaccumulation and trophic transfer behavior along the food chain. This research presents the first known published data on the bioaccumulation and trophic transfer characteristics of PFECAs in a source-impacted estuary. Elevated PFECA concentrations were observed in organisms (for instance, conch, with perfluoro-2-methoxyacetic acid (PFMOAA) concentration reaches up to 16 700 ng/g dry weight (dw)), indicating exposure risks to the consumers. Conch can be acted as a potential environmental bioindicator of PFMOAA. PFMOAA, hexafluoropropylene oxide trimer acid (HFPO-TrA) and PFOA were predominant detected in biotas. On the basis of trophic magnification factors (TMFs), PFECAs with ≥6 perfluorinated carbons (HFPO-TrA, hexafluoropropylene oxide tetramer acid (HFPO-TeA) and perfluoro (3, 5, 7, 9, 11-pentaoxadodecanoic) acid (PFO5DoA)) could be biomagnified along the food chain (TMF > 1), while PFMOAA with the least perfluorinated carbons undergone biodilution (TMF < 1). As seafood is an important dietary source of protein to human, there is a potential health risk related to the consuming polluted aquatic products.
TL;DR: The results of principal component analysis indicate that Cr, Ni, Cu, Zn, As and Hg are derived from natural sources but Cd and Pb seems to be of anthropogenic sources.