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https://www.readbyqxmd.com/read/28202359/preliminary-assessment-on-the-bioaccessibility-of-contaminants-of-emerging-concern-in-raw-and-cooked-seafood
#1
Ricardo N Alves, Ana L Maulvault, Vera L Barbosa, Sara Cunha, Christiaan J A F Kwadijk, Diana Álvarez-Muñoz, Sara Rodríguez-Mozaz, Òscar Aznar-Alemany, Ethel Eljarrat, Damià Barceló, Margarita Fernandez-Tejedor, Alice Tediosi, António Marques
A preliminary assessment of the bioaccessibility of contaminants of emerging concern (CeCs), including perfluorinated compounds (PFCs; i.e. PFOS and PFUnA), brominated flame retardants (BFRs; i.e. BDE47, BDE100, α-HBCD) and pharmaceuticals and personal care products (PPCPs; i.e. venlafaxine, methylparaben and UV-filter OC) was performed in seafood species available in the European markets. Additionally, the effect of steaming on CeCs bioaccessibility was also investigated for the first time. Overall, steaming affected differentially contaminants' concentrations, for instance, decreasing PFOS levels in flounder, but increasing both BDE47 and BDE100...
February 12, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28199788/development-of-fluorescence-surrogates-to-predict-the-photochemical-transformation-of-pharmaceuticals-in-wastewater-effluents
#2
Shuwen Yan, Bo Yao, Lushi Lian, Xinchen Lu, Shane A Snyder, Rui Li, Weihua Song
The photochemical transformation of pharmaceutical and personal care products (PPCPs) in wastewater effluents is an emerging concern for environmental scientists. In the current study, the photodegradation of 29 PPCPs was examined in effluents under simulated solar irradiation. Direct photodegradation, triplet state effluent organic matter (3EfOM*)-mediated and hydroxyl radical (HO•)-mediated degradation are three major pathways in the removal process. With the photodegradation of trace levels of PPCPs, the excitation-emission matrix (EEM) fluorescence intensities of the effluents were also gradually reduced...
February 15, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28187390/the-fate-of-pharmaceuticals-and-personal-care-products-ppcps-endocrine-disrupting-contaminants-edcs-metabolites-and-illicit-drugs-in-a-wwtw-and-environmental-waters
#3
Edward Archer, Bruce Petrie, Barbara Kasprzyk-Hordern, Gideon M Wolfaardt
A large number of emerging contaminants (ECs) are known to persist in surface waters, and create pressure on wastewater treatment works (WWTW) for their effective removal. Although a large database for the levels of these pollutants in water systems exist globally, there is still a lack in the correlation of the levels of these pollutants with possible long-term adverse health effects in wildlife and humans, such as endocrine disruption. The current study detected a total of 55 ECs in WWTW influent surface water, 41 ECs in effluent, and 40 ECs in environmental waters located upstream and downstream of the plant...
January 26, 2017: Chemosphere
https://www.readbyqxmd.com/read/28151652/kinetic-study-of-hydroxyl-and-sulfate-radical-mediated-oxidation-of-pharmaceuticals-in-wastewater-effluents
#4
Lushi Lian, Bo Yao, Shaodong Hou, Jingyun Fang, Shuwen Yan, Weihua Song
Advanced oxidation processes (AOPs), such as hydroxyl radical (HO(•))- and sulfate radical (SO4(•-))-mediated oxidation, are alternatives for the attenuation of pharmaceuticals and personal care products (PPCPs) in wastewater effluents. However, the kinetics of these reactions needs to be investigated. In this study, kinetic models for 15 PPCPs were built to predict the degradation of PPCPs in both HO(•)- and SO4(•-)-mediated oxidation. In the UV/H2O2 process, a simplified kinetic model involving only steady state concentrations of HO(•) and its biomolecular reaction rate constants is suitable for predicting the removal of PPCPs, indicating the dominant role of HO(•) in the removal of PPCPs...
February 13, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28122684/enhancement-of-total-nitrogen-removal-through-effluent-recirculation-and-fate-of-ppcps-in-a-hybrid-constructed-wetland-system-treating-urban-wastewater
#5
Cristina Ávila, Catiane Pelissari, Pablo H Sezerino, Massimiliano Sgroi, Paolo Roccaro, Joan García
The effect of effluent recirculation on the removal of total nitrogen (TN) and eight pharmaceuticals and personal care products (PPCPs) was evaluated during 9months in an experimental hybrid constructed wetland (CW) system applied in the treatment of urban wastewater. An Imhoff tank was followed by three stages of CWs (two 1.5-m(2) vertical subsurface flow (VF) beds alternating feed-rest cycles, a 2-m(2) horizontal (HF) and a 2-m(2) free water surface (FWS) wetland in series). A fraction of the final effluent was recycled back to the Imhoff tank with a recirculation rate of 50% (hydraulic loading rate=0...
January 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28108108/pharmaceuticals-and-personal-care-products-in-plants
#6
REVIEW
Mireia Bartrons, Josep Peñuelas
Pharmaceuticals and personal-care products (PPCPs) derived from agricultural, urban, and industrial areas accumulate in plants at concentrations (ng to μg kg(-1)) that can be toxic to the plants. Importantly, the dietary intake of these PPCP-contaminated plants may also pose a risk to human health, but currently little is known about the fate of PPCPs in plants and their effect on or risk to the ecosystem. In this Opinion article we propose that in-depth research on the use of plants as a monitoring device for assessing the use and environmental presence of PPCPs is warranted...
January 17, 2017: Trends in Plant Science
https://www.readbyqxmd.com/read/28089530/algae-mediated-removal-of-selected-pharmaceutical-and-personal-care-products-ppcps-from-lake-mead-water
#7
Xuelian Bai, Kumud Acharya
The persistence and fate of pharmaceutical and personal care products (PPCPs) in the Lake Mead ecosystem are particularly important considering the potential ecological risks and human health impacts. This study evaluated the removal of five common PPCPs (i.e., trimethoprim, sulfamethoxazole, carbamazepine, ciprofloxacin, and triclosan) from Lake Mead water mediated by the green alga Nannochloris sp. The results from the incubation studies showed that trimethoprim and carbamazepine were highly resistant to uptake in the algal cultural medium and were measured at approximately 90%-100% of the applied dose after 14days of incubation...
January 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28076771/screening-and-prioritization-of-micropollutants-in-wastewaters-from-on-site-sewage-treatment-facilities
#8
Meritxell Gros, Kristin M Blum, Henrik Jernstedt, Gunno Renman, Sara Rodríguez-Mozaz, Peter Haglund, Patrik L Andersson, Karin Wiberg, Lutz Ahrens
A comprehensive screening of micropollutants was performed in wastewaters from on-site sewage treatment facilities (OSSFs) and urban wastewater treatment plants (WWTPs) in Sweden. A suspect screening approach, using high resolution mass spectrometry, was developed and used in combination with target analysis. With this strategy, a total number of 79 micropollutants were successfully identified, which belong to the groups of per- and polyfluoroalkyl substances (PFASs), pesticides, phosphorus-containing flame retardants (PFRs) and pharmaceuticals and personal care products (PPCPs)...
December 30, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28073640/pharmaceuticals-in-a-temperate-forest-water-reuse-system
#9
Andrew D McEachran, Damian Shea, Elizabeth Guthrie Nichols
Forest-water reuse systems infiltrate municipal, industrial, and agricultural wastewaters through forest soils to shallow aquifers that ultimately discharge to surface waters. Their ability to mitigate regulated nutrients, metals, and organic chemicals is well known, but the fate of non-regulated chemicals in these systems is largely unstudied. This study quantified 33 pharmaceuticals and personal care products (PPCPs) in soils, groundwaters, and surface waters in a 2000-hectare forest that receives ~1200mm/year of secondary-treated, municipal wastewater in addition to natural rainfall (~1300mm/year)...
March 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28041695/influence-of-ppcps-on-the-performance-of-intermittently-operated-slow-sand-filters-for-household-water-purification
#10
Caroline M E Pompei, Lena Ciric, Melisa Canales, Kersti Karu, Eny M Vieira, Luiza C Campos
Removal of pharmaceuticals and personal care products (PPCPs) from drinking water is usually enhanced by advanced oxidation which is not affordable in low income countries. Slow sand filtration has been found to be capable of removing anti-inflammatory compounds, and its low maintenance costs and easy operation make it an attractive technology for treating drinking water in many parts of the world. In addition, slow sand filters can be used at both large and household scales. The biofilm (i.e. schmutzdecke) developed on the top of the sand and within the upper layers of the sand is acknowledged to be responsible for the water purification...
December 29, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/28012668/diclofenac-in-arabidopsis-cells-rapid-formation-of-conjugates
#11
Qiuguo Fu, Qingfu Ye, Jianbo Zhang, Jaben Richards, Dan Borchardt, Jay Gan
Pharmaceutical and personal care products (PPCPs) are continuously introduced into the soil-plant system, through practices such as agronomic use of reclaimed water and biosolids containing these trace contaminants. Plants may accumulate PPCPs from soil, serving as a conduit for human exposure. Metabolism likely controls the final accumulation of PPCPs in plants, but is in general poorly understood for emerging contaminants. In this study, we used diclofenac as a model compound, and employed (14)C tracing, and time-of-flight (TOF) and triple quadruple (QqQ) mass spectrometers to unravel its metabolism pathways in Arabidopsis thaliana cells...
March 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28008648/evaluating-the-effects-of-triclosan-on-three-field-crops-grown-in-four-formulations-of-biosolids
#12
René S Shahmohamadloo, Linda Lissemore, Ryan S Prosser, Paul K Sibley
A growing body of evidence suggests that amending soil with biosolids can be an integral component of sustainable agriculture. Despite strong evidence supporting its beneficial use in agriculture, there are concerns that chemicals, such as pharmaceuticals and personal care products (PPCPs), could present a risk to terrestrial ecosystems and human health. Triclosan (TCS) is one of the most commonly detected compounds in biosolids. To date, laboratory studies indicate that TCS likely poses a de minimis risk to field crops; however, these studies were either conducted under unrealistic exposure conditions or only assessed one or two formulations of biosolids...
December 23, 2016: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/27931386/fate-of-environmental-pollutants
#13
Lokesh P Padhye
This annual review covers the literature published in 2015 on topics related to the occurrence and fate of emerging environmental pollutants in wastewater. Due to the vast amount of literature published on this topic, I have discussed only a fraction of the quality research publications, up to maximum 20 relevant articles per section, due to limitation of space. The abstract search was carried out using Web of Science, and the abstracts were selected based on their relevance. In few cases, full-text articles were referred to better understand new findings...
October 2016: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/27836351/characterizing-pharmaceutical-personal-care-product-and-hormone-contamination-in-a-karst-aquifer-of-southwestern-illinois-usa-using-water-quality-and-stream-flow-parameters
#14
L K Dodgen, W R Kelly, S V Panno, S J Taylor, D L Armstrong, K N Wiles, Y Zhang, W Zheng
Karst aquifers are drinking water sources for 25% of the global population. However, the unique geology of karst areas facilitates rapid transfer of surficial chemicals to groundwater, potentially contaminating drinking water. Contamination of karst aquifers by nitrate, chloride, and bacteria have been previously observed, but little knowledge is available on the presence of contaminants of emerging concern (CECs), such as pharmaceuticals. Over a 17-month period, 58 water samples were collected from 13 sites in the Salem Plateau, a karst region in southwestern Illinois, United States...
February 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/27810576/effects-of-pharmaceuticals-and-personal-care-products-ppcps-on-multixenobiotic-resistance-mxr-related-efflux-transporter-activity-in-zebrafish-danio-rerio-embryos
#15
V Cunha, K Burkhardt-Medicke, P Wellner, M M Santos, P Moradas-Ferreira, T Luckenbach, M Ferreira
Certain ATP binding cassette (ABC) transporter proteins, such as zebrafish Abcb4, are efflux pumps acting as a cellular defence against a wide range of different, potentially toxic chemical compounds thus mediating so called multixenobiotic resistance (MXR). Certain chemicals target MXR proteins and, as so called chemosensitisers, inhibit the activity of these proteins thus increasing the toxicity of other chemicals that would normally be effluxed. In this study 14 pharmaceuticals and personal care products (PPCPs) that are being increasingly detected in aquatic systems, were assessed for interference with the MXR system of zebrafish (Danio rerio)...
February 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/27807790/magnetic-cobalt-ferrite-composite-as-an-efficient-catalyst-for-photocatalytic-oxidation-of-carbamazepine
#16
Yongzhen He, Chaomeng Dai, Xuefei Zhou
A magnetic spinel cobalt ferrite nanoparticle composite (CFO) was prepared via an ultrasonication-assisted co-precipitation method. The morphological structure and surface composition of CFO before and after reaction were investigated by using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray, and Fourier transform infrared spectroscopy, indicating the consumption of iron oxide during photodegradation. X-ray photoelectron spectroscopy and vibrating sample magnetometry confirm the preparation of the ferrite nanoparticle composite and its magnetic properties...
November 3, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27775436/ecotoxicity-interspecies-qaar-models-from-daphnia-toxicity-of-pharmaceuticals-and-personal-care-products
#17
A Sangion, P Gramatica
Pharmaceutical and Personal Care Products (PPCPs) became a class of contaminants of emerging concern because are ubiquitously detected in surface water and soil, where they can affect wildlife. Ecotoxicological data are only available for a few PPCPs, thus modelling approaches are essential tools to maximize the information contained in the existing data. In silico methods may be helpful in filling data gaps for the toxicity of PPCPs towards various ecological indicator organisms. The good correlation between toxicity toward Daphnia magna and those on two fish species (Pimephales promelas and Oncorhynchus mykiss), improved by the addition of one theoretical molecular descriptor, allowed us to develop predictive models to investigate the relationship between toxicities in different species...
October 2016: SAR and QSAR in Environmental Research
https://www.readbyqxmd.com/read/27750166/mass-loading-and-removal-of-pharmaceuticals-and-personal-care-products-including-psychoactives-antihypertensives-and-antibiotics-in-two-sewage-treatment-plants-in-southern-india
#18
Bikram Subedi, Keshava Balakrishna, Derrick Ian Joshua, Kurunthachalam Kannan
Environmental contamination by pharmaceuticals and personal care products (PPCPs) is barely studied in India despite being one of the largest global producers and consumers of pharmaceuticals. In this study, 29 pharmaceuticals and six metabolites were determined in sewage treatment plants (STPs) in Udupi (STPU: population served ∼150,000) and Mangalore (STPM: population served ∼450,000); the measured mean concentrations ranged from 12 to 61,000 ng/L and 5.0 to 31,000 ng/L, respectively. Atorvastatin (the most prescribed antihypercholesterolemic in India), mefenamic acid, and paraxanthine were found for the first time in wastewater in India at the mean concentrations of 395 ng/L, 1100 ng/L, and 13,000 ng/L, respectively...
January 2017: Chemosphere
https://www.readbyqxmd.com/read/27734948/colloid-mediated-transport-of-pharmaceutical-and-personal-care-products-through-porous-media
#19
Yingna Xing, Xijuan Chen, Xin Chen, Jie Zhuang
Pharmaceutical and personal care products (PPCPs) enter soils through reclaimed water irrigation and biosolid land applications. Colloids, such as clays, that are present in soil may interact with PPCPs and thus affect their fate and transport in the subsurface environment. This study addresses the influence of soil colloids on the sorption and transport behaviors of PPCPs through laboratory column experiments. Results show that the affinities of PPCPs for colloids vary with their molecular chemistry and solution ionic strength...
October 13, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27695005/adsorptive-removal-of-pharmaceuticals-and-personal-care-products-from-water-with-functionalized-metal-organic-frameworks-remarkable-adsorbents-with-hydrogen-bonding-abilities
#20
Pill Won Seo, Biswa Nath Bhadra, Imteaz Ahmed, Nazmul Abedin Khan, Sung Hwa Jhung
Adsorption of typical pharmaceuticals and personal care products (PPCPs) (such as naproxen, ibuprofen and oxybenzone) from aqueous solutions was studied by using the highly porous metal-organic framework (MOF) MIL-101 with and without functionalization. Adsorption results showed that MIL-101s with H-donor functional groups such as -OH and -NH2 were very effective for naproxen adsorption, despite a decrease in porosity, probably because of H-bonding between O atoms on naproxen and H atoms on the adsorbent. For this reason, MIL-101 with two functional groups capable of H-bonding (MIL-101-(OH)2) exhibited remarkable adsorption capacity based on adsorbent surface area...
October 3, 2016: Scientific Reports
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