Organophosphate esters 翻译

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Witryna19 wrz 2024 · Organophosphate esters (OPEs), used as flame retardants and plasticizers, occur at relatively high concentrations in urban air and surface waters. We tested the hypothesis that some OPEs could be considered persistent and mobile organic compounds (PMOCs), using the poly parameter linear free energy relationship … Witryna温州市某污水处理厂设计规模为1.0×104 m3/d,采用AAO-MBR工艺,出水水质达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级A标准.对1年的运营数据进行分析,结果表明:AAO-MBR工艺能够稳定地脱氮除磷并降解有机物,项目实际进水CODCr、TN、NH3-N和TP年平均浓度分别为182、40、13 mg/L和2.5 mg/L,对应出水污染物 ...

Exposure to Organophosphate esters and metabolic …

Witryna20 lis 2024 · Organophosphate esters are characterized with a wide range of physicochemical properties (Table S1), e.g., log K ow ranging from −0.65 for trimethyl phosphate (TMP) to 9.49 for tris(2-ethylhexyl) phosphate (TEHP) (van der Veen and de Boer, 2012). It is quite a challenge to develop a method with high sensitivity and … In organic chemistry, organophosphates (also known as phosphate esters, or OPEs) are a class of organophosphorus compounds with the general structure O=P(OR)3, a central phosphate molecule with alkyl or aromatic substituents. They can be considered as esters of phosphoric acid. Like … Zobacz więcej Alcoholysis of POCl3 Phosphorus oxychloride reacts readily with alcohols to give organophosphates. This is the dominate industrial route and is responsible for almost all organophosphate … Zobacz więcej Guanitoxin is a naturally occurring organophosphate produced by cyanobacteria. The detection … Zobacz więcej History Early pioneers in the field include Jean Louis Lassaigne (early 19th century) and Philippe de Clermont Zobacz więcej Flame retardants (FRs) are chemicals that have been used on diverse consumer materials to prevent combustion and to delay the spread of fire after ignition. The increased demand to satisfy fire safety standards for flammability of plastic materials used … Zobacz więcej The phosphate esters bearing OH groups are acidic and partially deprotonated in aqueous solution. For example, DNA and RNA are polymers of the type [PO2(OR)(OR') … Zobacz więcej Today, organophosphates make up about 50% of the killing agents in chemical pesticides. Organophosphate pesticides (OPPs), like some nerve agents, inhibit acetylcholinesterase (IRAC mode of action 1b), which is … Zobacz więcej Poisoning Many "organophosphates" are potent nerve agents, functioning by inhibiting the action of acetylcholinesterase (AChE) in nerve cells. … Zobacz więcej fighter ranger multiclass

An overview of organophosphate esters and their metabolites in

Witrynaorganophosphate的中文意思：有机磷酸盐酯…，查阅organophosphate的详细中文翻译 ... An organophosphate (sometimes abbreviated OP) is the general name for esters of phosphoric acid. Phosphates are probably … Witryna21 lis 2024 · Purpose of Review Organophosphate esters (OPEs) are applied to a variety of consumer products, primarily as flame retardants and plasticizers. OPEs can leach out of products over time and are consequently prevalent in the environment and frequently detected in human biomonitoring studies. Exposure during pregnancy is of … WitrynaOrganophosphate esters (OPEs), which are frequently used as flame retardants and plasticizers in versatile products, are readily released to the external environment. Although workers at municipal waste incineration plants may be extensively exposed to OPEs, only scarce health monitoring and risk assessments have been conducted in … fighter rampage

Inhibitory effects of organophosphate esters on carboxylesterase ...

Associations between organophosphate esters metabolites and …

WitrynaOrganophosphate esters (OPEs) are widely used as flame retardants and plasticizers in consumer and industrial products. Human exposure to OPEs raises concerns due to their endocrine disruptive potentials. Till now, the effects of OPEs on thyroid hormones (THs) and the mediating role of oxidative stress in pregnant women have not been … Witryna城乡医疗卫生设施的规划与实施作为政府兜底保障的重要民生工程，加强规划用地的保障是提升医疗卫生服务水平的基础。本文从重庆医疗卫生设施现有规划标准及实施存在的现实问题出发，重点在明确分级分类体系、对接行业标准、公共卫生设施用地控制指标、街道及社区级医疗卫生设施标准制定 ... grinding concrete floor high spotsWitrynaAn organophosphate (sometimes abbreviated OP) is the general name for esters of phosphoric acid.Phosphates are probably the most pervasive organophosphorus compounds.Many of the most important biochemicals are organophosphates, including DNA and RNA as well as many cofactors that are essential for life. … grinding concrete floors process

"WitrynaScientists and decision makers need accurate, accessible and fast tools to assess and prioritize the persistence (P OV) and environmental long-range transport potential (LRTP) of chemicals.Here we evaluated the Organisation for Economic Co-operation and Development (OECD) P OV and LRTP Screening Tool (“the Tool”) with respect to the … " - Organophosphate esters 翻译

Organophosphate esters 翻译

Organophosphate Esters in China: Fate, Occurrence, and Human …

WitrynaOrganophosphate esters (OPEs) have been reported to occur in various agro-food items worldwide, which has resulted in increasing concerns for effects on health of humans and wildlife, including through agriculture. However, information on presence, sources and transfer routes of OPEs in agro-foods, and consequent health risks … Witryna1 lis 2024 · The effects of aryl-organophosphate esters (aryl-OPEs) on female reproduction health are still unclear owing to the lack of specific exposure biomarkers. Here, we analyzed the hydroxylated metabolites of three aryl-OPEs (phenyl diphenyl phosphate [TPhP], 2-ethylhexyl diphenyl phosphate [EHDPP], and tricresyl phosphate …

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Witryna5 lip 2024 · Surface sediment samples from Taihu Lake in China and its inflow rivers, along with two lake sediment core samples, were collected and analyzed for organophosphate esters (OPEs). The concentrations of total OPEs varied from 28.60 ng/g to 158.72 ng/g (median: 54.25 ng/g) in river surface sediment and from 62.57 … Witryna25 sie 2024 · We investigated the inhibitory effects of 13 organophosphate esters (OPEs) and hydrolytic metabolites on the carboxylesterase activity of rat liver microsomes in vitro in order to examine whether there might be a potential impact on human health, and to elucidate the structure activity relationship. Among the test …

Witryna6 maj 2024 · Organophosphate esters (OPEs) are used widely as flame retardants and plasticizers. However, the associations between OPEs metabolites and sleep outcomes (sleep disorder and trouble sleeping) remain unknown. Data utilized in this cross-sectional study was from the National Health and Nutrition Examination Survey … Witryna11 sty 2024 · Although chlorinated organophosphate esters (Cl-OPEs) have been reported to be ubiquitously distributed in various anoxic environments, little information is available on their fate under anoxic conditions. In this study, we report two Dehalococcoides-containing enrichment cultures that transformed 3.88 ± 0.22 μmol …

WitrynaBackground: Organophosphate esters (OPEs) are increasingly used as flame retardants and plasticizers in various products. In vivo and in vitro studies suggest that OPEs can affect metabolic health but the human evidence is lacking. Objectives: We analyzed data from the U.S. National Health and Nutrition Examination Survey, 2011 … WitrynaOrganophosphate ester flame retardants and plasticizers in a Chinese population: Significance of hydroxylated metabolites and implication for human exposure Environ Pollut. 2024 Feb;257:113633. doi: 10.1016/j.envpol.2024.113633. Epub 2024 Nov 15. Authors Mengqi Li 1 ...

Witryna7 gru 2016 · The concentrations of six organophosphate esters (OPEs) in atmospheric particle phase samples collected once every 12 days at five sites in the North American Great Lakes basin over the period of March 2012 to December 2014, inclusive, are reported. These OPEs include tris(2-chloroethyl) phosphate (TCEP), tris(2 …

Witryna4 wrz 2024 · Numerous studies have reported the environmental contamination with traditional organophosphate triesters (tri-OPEs), but there is very little information on emerging tri-OPEs and organophosphate diesters (di-OPEs), especially in e-waste recycling areas. In this study, we conducted a comprehensive survey to monitor a … grinding concrete floors smoothWitryna以丹皮酚为原料,与乙酸在N,N-二甲基乙酰胺(DMAc)和SOCl2作用下反应制得乙酰丹皮酚酯(1);1中酮羰基与盐酸羟胺反应生成相应的丹皮酚肟(2);在DMAc和CH2 Cl2体系中,取代羧酸(3a～3l)与SOCl2反应生成酰氯后随即与2反应合成了系列新型丹皮酚肟酯(4a～4l),产率80.9％～95.5％,其结构经1 H NMR、13 C NMR、IR和MS表征.以苯 ... grinding concrete floors with angle grinderWitrynaThe limits of detection and quantitation for all the mesylate esters were 0.003mg/L and 0.01mg/L,respectively. The mean recoveries for mesylate esters at three spiked levels (0.16,0.20,0.24mg/L)were 88.43% -104.15% with relative standard deviations of 0.97% -1.82%and with good precisions. The method is simple,rapid,accurate,reliable,highly ... grinding concrete floor for epoxyWitrynaOrganophosphate esters (OPEs) can exhibit various toxicities including endocrine disruption activity. Unfortunately, the low-dose endocrine-disrupting effects mediated by estrogen receptors (ERs) are commonly underestimated for OPEs and their metabolites. Here, structure-oriented research was performed to investigate the … grinding concrete floor diyWitrynaorganophosphate的意思、解释及翻译：1. a chemical used for killing insects and small animals that damage crops: 2. a chemical used for…。了解更多。 grinding concrete floorsWitryna13 lut 2024 · Tris(2-butoxyethyl) phosphate (TBOEP) and tris(n-butyl) phosphate (TNBP) are the most commonly used alkyl organophosphate esters (alkyl-OPEs), and they increasingly accumulate in organisms and create potential health hazards.This study examined the metabolism of TNBP and TBOEP in Carassius carassius liver and … fighter rated to fly in hurricanesWitrynaOrganophosphate triesters (tri-OPEs) have recently been widely identified in aquatic ecosystems, but information on their organophosphate diester (di-OPE) metabolites is sparsely available. Herein, uniform fishmeal products were collected across the globe (the U.S., China, Europe, South America, and Southeast Asia). Sixteen representative … fighter ravi