keyword
MENU ▼
Read by QxMD icon Read
search

Persistent organic pollutants

keyword
https://www.readbyqxmd.com/read/28918287/steroid-hormones-and-persistent-organic-pollutants-in-plasma-from-north-eastern-atlantic-pilot-whales
#1
Katrin S Hoydal, Bjarne Styrishave, Tomasz M Ciesielski, Robert J Letcher, Maria Dam, Bjørn M Jenssen
Persistent organic pollutants (POPs) are known to have endocrine disruptive effects, interfering with endogenous steroid hormones. The present study examined nine steroid hormones and their relationships with the concentrations of selected POPs in pilot whales (Globicephala melas) from the Faroe Islands, NE Atlantic. The different steroids were detected in 15 to all of the 26 individuals. High concentrations of progesterone (83.3-211.7pmol/g) and pregnenolone (PRE; 4.68-5.69pmol/g) were found in three adult females indicating that they were pregnant or ovulating...
September 14, 2017: Environmental Research
https://www.readbyqxmd.com/read/28917174/potential-effects-of-changes-in-climate-and-emissions-on-distribution-and-fate-of-perfluorooctane-sulfonate-in-the-bohai-rim-china
#2
Chao Su, Shuai Song, Yonglong Lu, Shijie Liu, John P Giesy, Deliang Chen, Alan Jenkins, Andrew J Sweetman, Baninla Yvette
Climate change and emissions rates of contaminants are expected to affect distribution and fate of Persistent Organic Pollutants (POPs) in the environment, however, studies on these combined factors are rare. In this study, Perfluorooctane Sulfonate (PFOS) is used as an example to assess how those two factors synthetically affect fate and disposition of POPs in the Bohai Rim of China by using the Berkeley-Trent-Urban-Rural (BETR-Urban-Rural) model. We set up three climate change scenarios and four emission scenarios to conduct the simulations...
September 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28915320/adipose-tissue-as-a-site-of-toxin-accumulation
#3
Erin Jackson, Robin Shoemaker, Nika Larian, Lisa Cassis
We examine the role of adipose tissue, typically considered an energy storage site, as a potential site of toxicant accumulation. Although the production of most persistent organic pollutants (POPs) was banned years ago, these toxicants persist in the environment due to their resistance to biodegradation and widespread distribution in various environmental forms (e.g., vapor, sediment, and water). As a result, human exposure to these toxicants is inevitable. Largely due to their lipophilicity, POPs bioaccumulate in adipose tissue, resulting in greater body burdens of these environmental toxicants with obesity...
September 12, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28913631/comparative-proteomic-analysis-and-characterization-of-benzo-a-pyrene-removal-by-microbacterium-sp-strain-m-csw3-under-denitrifying-conditions
#4
Wei Qin, FuQiang Fan, Yi Zhu, Yingying Wang, Xiang Liu, Aizhong Ding, Junfeng Dou
High-molecular-weight polycyclic aromatic hydrocarbons are persistent organic pollutants with great environmental and human health risks and the associated bioremediation activities have always been hampered by the lack of powerful bacterial species under redox conditions. A Microbacterium sp. strain capable of using benzo(a)pyrene as sole carbon and energy sources under denitrifying conditions was isolated. The difference in protein expression during BaP removal and removal characterization were investigated...
September 14, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/28911793/passive-air-sampling-of-polybrominated-diphenyl-ethers-in-new-delhi-kolkata-mumbai-and-chennai-levels-homologous-profiling-and-source-apportionment
#5
Paromita Chakraborty, Gan Zhang, Hairong Cheng, Prithiviraj Balasubramanian, Jun Li, Kevin C Jones
Several studies in the recent past reported new sources for industrial persistent organic pollutants (POPs) from metropolitan cities of India. To fill the data gap for atmospheric polybrominated diphenyl ethers (PBDEs), polyurethane foam disk passive air sampling (PUF-PAS) was conducted along urban-suburban-rural transects in four quadrilateral cities viz., New Delhi, Kolkata, Mumbai and Chennai from northern, eastern, western and southern India respectively. Average concentration of Σ8PBDEs in pg/m(3) for New Delhi, Kolkata, Mumbai and Chennai were 198, 135, 264 and 144 respectively...
September 11, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28910963/placental-transfer-of-persistent-organic-pollutants-and-feasibility-using-the-placenta-as-a-non-invasive-biomonitoring-matrix
#6
Yunsun Jeong, Sunggyu Lee, Sunmi Kim, Jeongim Park, Hai-Joong Kim, Gyuyeon Choi, Sooran Choi, Sungjoo Kim, Su Young Kim, Sungkyoon Kim, Kyungho Choi, Hyo-Bang Moon
The placenta is a crucial organ for the supply of oxygen and nutritional elements from mother to fetus. Several studies have reported evidence of the placental transfer of persistent organic pollutants (POPs). Despite the importance of prenatal exposure to POPs, the transport process of POPs via the human placenta is not well understood. To investigate the transport processes of these contaminants and to assess the feasibility of the placenta as a non-invasive biological matrix, we measured 19 polychlorinated biphenyls (PCBs), 18 organochlorine pesticides (OCPs), and 24 polybrominated diphenyl ethers (PBDEs) in placenta tissues...
September 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28910732/degradation-of-toxic-pahs-in-water-and-soil-using-potassium-zinc-hexacyanoferrate-nanocubes
#7
Uma Shanker, Vidhisha Jassal, Manviri Rani
Polycyclic aromatic hydrocarbons (PAHs) the ubiquitous, persistent and carcinogenic environmental contaminants have raised concern worldwide. Recently, their removal methodologies are advanced after exploring nanomaterials. Therefore, degradation of selected toxic PAHs (3-5 rings) using potassium zinc hexacyanoferrate (KZnHCF) nanocubes was studied. Highly crystalline and sharp KZnHCF nanocubes (∼100 nm) were obtained by green route using sapindus mukorossi. In both water and soil, anthracene and phenanthrene were degraded to maximum extent (80-93%), whereas, the degradation of fluorene, chrysene and benzo (a) pyrene were ∼70-80%...
September 11, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28910589/persistent-organic-pollutants-and-related-biological-responses-measured-in-coastal-fish-using-chemical-and-biological-screening-methods
#8
Zhanna Tairova, Jakob Strand, Rossana Bossi, Martin M Larsen, Lars Förlin, Anders Bignert, Jenny Hedman, Jens Gercken, Thomas Lang, Nicolai F Fricke, Gert Asmund, Manhai Long, Eva C Bonefeld-Jørgensen
The aim of this study was to investigate the spatial distribution, levels of dioxin-like compounds (DLC), and biological responses in two fish species. The viviparous eelpout (Zoarces viviparus) was collected from various locations in the Baltic Sea and in fjords of Kattegat and Skagerrak, while shorthorn sculpin (Myoxocephalus scorpius) was obtained at the polychlorinated biphenyl (PCB) polluted site in North West Greenland. Significant differences were detected both in contaminant levels and relative contributions from either polychlorinated dibenzodioxins (PCDD) or polychlorinated dibenzofurans (PCDF or furans) and mono-ortho- and non-ortho (coplanar) polychlorinated biphenyls (dl-PCB)...
September 14, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28905184/energy-transfer-and-kinetics-in-mechanochemistry
#9
Zhiliang Chen, Shengyong Lu, Qiongjing Mao, Alfons Buekens, Yuting Wang, Jianhua Yan
Mechanochemistry (MC) exerts extraordinary degradation and decomposition effects on many chlorinated, brominated, and even fluorinated persistent organic pollutants (POPs). However, its application is still limited by inadequate study of its reaction kinetic aspects. In the present work, the ball motion and energy transfer in planetary ball mill are investigated in some detail. Almost all milling parameters are summarised in a single factor-total effective impact energy. Furthermore, the MC kinetic between calcium oxide/Al and hexachlorobenzene is well established and modelled...
September 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28901764/equilibrium-passive-sampling-of-pop-in-lipid-rich-and-lean-fish-tissue-quality-control-using-performance-reference-compounds
#10
Tatsiana P Rusina, Pernilla Carlsson, Branislav Vrana, Foppe Smedes
Passive sampling is widely used to measure levels of contaminants in various environmental matrices, including fish tissue. Equilibrium passive sampling (EPS) of persistent organic pollutants (POP) in fish tissue has been hitherto limited to application in lipid-rich tissue. We tested several exposure methods to extend EPS applicability to lean tissue. Thin-film polydimethylsiloxane (PDMS) passive samplers were exposed statically to intact fillet and fish homogenate and dynamically by rolling with cut fillet cubes...
September 13, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28898957/persistent-organic-pollutants-in-krill-from-the-bellingshausen-south-scotia-and-weddell-seas
#11
Cristóbal J Galbán-Malagón, Gema Hernán, Esteban Abad, Jordi Dachs
Persistent organic pollutants (POPs) reach Antarctica through atmospheric transport, oceanic currents, and to minor extent, by migratory animals. The Southern Ocean is a net sink for many POPs, with a key contribution of the settling fluxes of POPs bound to organic matter (biological pump). However, little is known about POP transfer through the food web in the Southern Ocean and Antarctic waters, where krill is an important ecological node. In this study, we assessed the occurrence of polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs), polybrominated diphenyl ethers (PBDEs), and polychlorinated biphenyls (PCBs) in Antarctic krill (Euphausia superba) from the Bellingshausen, South Scotia and Weddell Seas around the Antarctic Peninsula...
September 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28898947/soil-enzyme-dynamics-in-chlorpyrifos-treated-soils-under-the-influence-of-earthworms
#12
Juan C Sanchez-Hernandez, J Notario Del Pino, Yvan Capowiez, Christophe Mazzia, Magali Rault
Earthworms contribute, directly and indirectly, to contaminant biodegradation. However, most of bioremediation studies using these annelids focus on pollutant dissipation, thus disregarding the health status of the organism implied in bioremediation as well as the recovery of indicators of soil quality. A microcosm study was performed using Lumbricus terrestris to determine whether earthworm density (2 or 4individuals/kg wet soil) and the time of exposure (1, 2, 6, 12, and 18wk) could affect chlorpyrifos persistence in soil initially treated with 20mg active ingredientkg(-1) wet soil...
September 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28898582/spatio-temporal-distribution-and-alpine-behavior-of-short-chain-chlorinated-paraffins-in-air-at-shergyla-mountain-and-lhasa-on-the-tibetan-plateau-of-china
#13
Jing Wu, Wei Gao, Yong Liang, Jianjie Fu, Yan Gao, Yawei Wang, Guibin Jiang
Pristine high-altitude mountains are ideal areas for studying the potential mechanism behind the long-range transport and environmental behavior of persistent organic pollutants (POPs) in remote areas. Short chain chlorinated paraffins (SCCPs) are the most complex halogenated contaminants in the environment, and have attracted extensive worldwide interest in recent years. In this study, the spatio-temporal concentrations and distributions of SCCPs in air collected from Shergyla Mountain (located in the southeast of the Tibetan Plateau) and Lhasa were investigated during 2012-2015...
September 12, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28898241/alterations-in-the-programming-of-energy-metabolism-in-adolescents-with-background-exposure-to-dioxins-dl-pcbs-and-pbdes
#14
Marike M Leijs, Janna G Koppe, Thomas Vulsma, Kees Olie, Wim M C van Aalderen, Pim de Voogt, Juliette Legler, Gavin W Ten Tusscher
OBJECTIVES: Dioxins and PCBs are highly toxic and persistent environmental pollutants that are measurable in humans worldwide. These persistent organic pollutants are associated with a higher incidence of diabetes mellitus. We hypothesise that perinatal (background) exposure to industrial pollutants like dioxins also influences body mass development and energy metabolism in later life. STUDY DESIGN: In The Netherlands, the perinatal exposure (prenatal exposure and postnatal lactational intake) to dioxins has been studied prospectively since 1987...
2017: PloS One
https://www.readbyqxmd.com/read/28892854/tissue-distribution-and-maternal-transfer-of-persistent-organic-pollutants-in-kentish-plovers-charadrius-alexandrines-from-cangzhou-wetland-bohai-bay-china
#15
Shucheng Zheng, Pu Wang, Huizhong Sun, Julius Matsiko, Yanfen Hao, Derong Meng, Yingming Li, Guogang Zhang, Qinghua Zhang, Guibin Jiang
Several persistent organic pollutants, including polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs) and organochlorine pesticides (OCPs), were comprehensively investigated in the egg, muscle and liver samples of Kentish Plover (Charadrius alexandrines) collected from Cangzhou Wetland in western Bohai Bay, China. DDTs were the most abundant contaminants (35.4-9853ngg(-1) lipid weight, lw), followed by HCHs, PCBs, PBDEs and HCB...
September 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28892796/a-solid-composite-microbial-inoculant-for-the-simultaneous-removal-of-volatile-organic-sulfide-compounds-preparation-characterization-and-its-bioaugmentation-of-a-biotrickling-filter
#16
Dong-Zhi Chen, Xiang-Yu Zhao, Xiao-Ping Miao, Jing Chen, Jie-Xu Ye, Zhuo-Wei Cheng, Shi-Han Zhang, Jian-Meng Chen
Volatile organic sulfide compounds (VOSCs) are usually resistant to biodegradation, thereby limiting the performance of traditional biotechnology dealing with waste gas containing such pollutants especially in mixture. In this study, a solid composite microbial inoculant (SCMI) was prepared to remove dimethyl sulfide (DMS) and propanethiol (PT). Given that the DMS degradation activity of Alcaligenes sp. SY1 is inducible and the PT-degradation activity of Pseudomonas putida S-1 is constitutive, different strategies are designed for cell cultivation to obtain high VOSC removal rates of SCMI...
September 1, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28891638/photochemistry-of-hydrochar-reactive-oxygen-species-generation-and-sulfadimidine-degradation
#17
Na Chen, Yahui Huang, Xiaojing Hou, Zhihui Ai, Lizhi Zhang
Biochar, mainly including pyrochar produced via pyrolysis of biomass at moderate temperatures of 350-700 oC and hydrochar formed by hydrothermal carbonization in a range of 150-350 oC, have received increasing attention because of their significant environmental impacts. It is known that pyrochar can generate reactive oxygen species even in the dark owing to the presence of persistent free radicals, but hydrochar is far less studied. In this study, we systematically investigate the photochemistry of hydrochar and check its effects on the sulfadimidine degradation...
September 11, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28890580/the-role-of-compost-in-stabilizing-the-microbiological-and-biochemical-properties-of-zinc-stressed-soil
#18
Rafał Strachel, Jadwiga Wyszkowska, Małgorzata Baćmaga
The progressive development of civilization and intensive industrialization has contributed to the global pollution of the natural environment by heavy metals, especially the soil. Degraded soils generally contain less organic matter, and thus, their homeostasis is more often disturbed, which in turn manifests in changes in biological and physicochemical properties of the soil. Therefore, new possibilities and solutions for possible neutralization of these contaminations are sought, inter alia, through reclamation of degraded land...
2017: Water, Air, and Soil Pollution
https://www.readbyqxmd.com/read/28889174/individual-and-combined-toxicities-of-benzo-a-pyrene-and-2-2-4-4-tetrabromodiphenyl-ether-on-early-life-stages-of-the-pacific-oyster-crassostrea-gigas
#19
Jia Xie, Dinglong Yang, Xiyan Sun, Ruiwen Cao, Lizhu Chen, Qing Wang, Fei Li, Huifeng Wu, Chenglong Ji, Ming Cong, Jianmin Zhao
Persistent organic pollutants (POPs) are ubiquitous and coexisted in the aquatic environment. Individual and combined toxic effects of benzo[a]pyrene (BaP) and 2,2',4,4'-tetrabromodiphenyl ether (BDE-47) on embryogenesis, and larval survival of the Pacific oyster were investigated. The EC50 values of BaP, BDE-47 and their mixture on embryogenesis were 18.4, 203.3 and 72.0 µg/L respectively, while the LC50 values for 96 h larval mortality were 26.8, 244.5 and 108.9 µg/L respectively. The Marking-Dawson additive toxicity indices were -0...
September 9, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28888117/biotransformation-antioxidant-and-histopathological-biomarker-responses-to-contaminants-in-european-and-american-yellow-eels-from-the-gironde-and-st-lawrence-estuaries
#20
Géraldine Patey, Catherine M Couillard, Fabien Pierron, Magalie Baudrimont, Patrice Couture
Since the early 1980s, populations of American (Anguilla rostrata) and European eels (Anguilla anguilla) have suffered a sharp decline. The causes of their decline are likely multifactorial and include chemical pollution. A field study was conducted in eight sites varying in organic and metal contamination along the St. Lawrence (Eastern Canada) and Gironde (France) systems to investigate the relationships among contaminants, biological characteristics and biotransformation, antioxidant and histopathological biomarkers in eels from both species...
August 28, 2017: Chemosphere
keyword
keyword
37549
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"