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Articles de revues sur le sujet « OPES »

Auteur : Grafiati

Publié le 10 mars 2023

Mis à jour le 31 juillet 2025

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1

Hu, Zhihui, Lingshi Yin, Xiaofeng Wen, et al. "Organophosphate Esters in China: Fate, Occurrence, and Human Exposure." Toxics 9, no. 11 (2021): 310. http://dx.doi.org/10.3390/toxics9110310.

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Organophosphate esters (OPEs) are widely used as flame retardants and plasticizers. OPEs have been released into various environments (e.g., water, sediments, dust and air, and soil). To investigate the occurrence and distribution of OPEs in various environments in China, this review collects and discusses the published scientific studies in this field. Chlorinated OPEs, as flame retardants, are the predominant OPEs found in the environment. The analysis of data revealed large concentration variations among microenvironments, including inflowing river water (range: 0.69–10.62 µgL−1), sediments

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Gong, Cheng, and Hong Liao. "A typical weather pattern for ozone pollution events in North China." Atmospheric Chemistry and Physics 19, no. 22 (2019): 13725–40. http://dx.doi.org/10.5194/acp-19-13725-2019.

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Abstract. Ground-level observations, reanalyzed meteorological fields and a 3-D global chemical and transport model (GEOS-Chem) were applied in this study to investigate ozone (O3) pollution events (OPEs) in North China (36.5–40.5∘ N, 114.5–119.5∘ E) during 2014–2017. Ozone pollution days (OPDs) were defined as days with maximum daily averaged 8 h (MDA8) concentrations over North China larger than 160 µg m−3, and OPEs were defined as periods with 3 or more consecutive OPDs. Observations showed that there were 167 OPDs and 27 OPEs in North China during 2014–2017, in which 123 OPDs and 21 OPEs o

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Zhou, Qi, Zihao Wei, Yanan Xu, and Changhu Xue. "Fibrous and Spherical Aggregates of Ovotransferrin as Stabilizers for Oleogel-Based Pickering Emulsions: Preparation, Characteristics and Curcumin Delivery." Gels 8, no. 8 (2022): 517. http://dx.doi.org/10.3390/gels8080517.

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This study aimed to explore the effects and mechanisms of differently shaped aggregates of ovotransferrin (OVT) particles on oleogel-based Pickering emulsions (OPEs). Medium-chain triglyceride oil-based oleogels were constructed using beeswax, and their gel-sol melting temperatures were investigated. Atomic force microscopy confirmed that both OVT fibrils and OVT spheres were successfully prepared, and the three-phase contact angle measurements indicated that fibrous and spherical aggregates of OVT particles possessed great potential to stabilize the OPEs. Afterward, the oil-in-water OPEs were

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Wang, Yisha, Yanjun Zhao, Xu Han, et al. "A Review of Organophosphate Esters in Aquatic Environments: Levels, Distribution, and Human Exposure." Water 15, no. 9 (2023): 1790. http://dx.doi.org/10.3390/w15091790.

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Organophosphate esters (OPEs) are increasingly used as flame retardants and plasticizers in various products. Most of them are physically mixed rather than chemical bonded to the polymeric products, leading to OPEs being readily released into the surrounding environment. Due to their relatively high solubility and mobility, OPEs are ubiquitous in the aquatic environment and may pose potential hazards to human health and aquatic organisms. This review systematically summarized the fate and distribution of OPEs in the aquatic environment and the potential effects of OPEs on humans. Data analysis

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Dang, Yi, Kexin Tang, Zhihao Wang, et al. "Organophosphate Esters (OPEs) Flame Retardants in Water: A Review of Photocatalysis, Adsorption, and Biological Degradation." Molecules 28, no. 7 (2023): 2983. http://dx.doi.org/10.3390/molecules28072983.

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As a substitute for banned brominated flame retardants (BFRs), the use of organophosphate esters (OPEs) increased year by year with the increase in industrial production and living demand. It was inevitable that OPEs would be discharged into wastewater in excess, which posed a great threat to the health of human beings and aquatic organisms. In the past few decades, people used various methods to remove refractory OPEs. This paper reviewed the photocatalysis method, the adsorption method with wide applicability, and the biological method mainly relying on enzymolysis and hydrolysis to degrade

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Cao, Xuezhi, Bingbing Wang, Xinxin Liu, Jichun Cheng, and Shiliang Wang. "Study of the Spatiotemporal Variations, Source Determination, and Potential Ecological Risk of Organophosphate Esters in Typical Coastal Tourist Resorts in China." Water 15, no. 22 (2023): 3976. http://dx.doi.org/10.3390/w15223976.

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Investigation of the environmental occurrence and behavior of organophosphate esters (OPEs) is very important and is becoming a hot topic in the academic community. In this study, 12 targeted OPEs in the water and sediment from 19 coastal tourist resorts in the Shandong Peninsula in China were analyzed to show their concentrations, spatial variations, and potential ecological risks. The results showed that the total concentrations of OPEs (ΣOPEs) were in the range of 18.52–3069.43 ng/L in the water and 3.20–568.76 ng/g in the sediment. The dominant OPEs in the water and sediment were tris (2-c

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Yin, Hongling, Jinfeng Liang, Di Wu, Shiping Li, Yi Luo, and Xu Deng. "Measurement report: Seasonality, distribution and sources of organophosphate esters in PM<sub>2.5</sub> from an inland urban city in Southwest China." Atmospheric Chemistry and Physics 20, no. 23 (2020): 14933–45. http://dx.doi.org/10.5194/acp-20-14933-2020.

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Abstract. Organophosphate esters (OPEs) are contaminants of emerging concern, and studies have concluded that urban areas are a significant source of OPEs. Samples were collected from six ground-based sites located in Chengdu, a typical rapidly developing metropolitan area in Southwest China, and were analyzed for seven OPEs in atmospheric PM2.5 (Σ7 OPEs). The concentrations of Σ7 OPEs in PM2.5 ranged from 5.83 to 6.91 ng m−3, with a mean of 6.6 ± 3.3 ng m−3, and the primary pollutants were tris-(2-butoxyethyl) phosphate (TBEP), tri-n-butyl phosphate (TnBP), tris-(2-chloroethyl) phosphate (TCE

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Li, Yuening, Faqiang Zhan, Chubashini Shunthirasingham, et al. "Seasonal air concentration variability, gas–particle partitioning, precipitation scavenging, and air–water equilibrium of organophosphate esters in southern Canada." Atmospheric Chemistry and Physics 25, no. 1 (2025): 459–72. https://doi.org/10.5194/acp-25-459-2025.

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Abstract. In response to increasing production and application volumes, organophosphate esters (OPEs) have emerged as pervasively detected contaminants in various environmental media, with concentrations often exceeding those of traditional organic contaminants. Despite the recognition of the atmosphere's important role in dispersing OPEs and a substantial number of studies quantifying OPEs in air, investigations into atmospheric phase distribution processes are rare. Using measurements of OPEs in the atmospheric gas and particle phase, in precipitation, and in surface water collected in south

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Luo, Wangxing, Siyu Yao, Jiahui Huang, et al. "Distribution and Risk Assessment of Organophosphate Esters in Agricultural Soils and Plants in the Coastal Areas of South China." Toxics 12, no. 4 (2024): 286. http://dx.doi.org/10.3390/toxics12040286.

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Organophosphate esters (OPEs) are frequently used as flame retardants and plasticizers in various commercial products. While initially considered as substitutes for brominated flame retardants, they have faced restrictions in some countries due to their toxic effects on organisms. We collected 37 soil and crop samples in 20 cities along the coast of South China, and OPEs were detected in all of them. Meanwhile, we studied the contamination and potential human health risks of OPEs. In soil samples, the combined concentrations of eight OPEs varied between 74.7 and 410 ng/g, averaging at 255 ng/g

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10

Zou, Xiang. "A Review of the Properties, Transport, and Fate of Organophosphate Esters in Polar Snow and Ice." Sustainability 17, no. 6 (2025): 2493. https://doi.org/10.3390/su17062493.

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Organophosphate esters (OPEs) are emerging organic pollutants widely used as industrial flame retardants and plasticizers in recent years. These compounds have been detected in various environmental media. Snow, a fundamental component of glaciers, plays a key role in the effective removal of organic pollutants from the atmosphere. Consequently, glacier accumulation zones receive substantial deposits containing OPEs, making them significant sinks for OPEs. The presence of OPEs in snow and ice serves as a natural archive for studying their environmental behavior and fate. This review examines t

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11

Liu, Wenxin, Hong Zhang, Jiaqi Ding, Wanyu He, Lin Zhu, and Jianfeng Feng. "Waterborne and Dietary Bioaccumulation of Organophosphate Esters in Zooplankton Daphnia magna." International Journal of Environmental Research and Public Health 19, no. 15 (2022): 9382. http://dx.doi.org/10.3390/ijerph19159382.

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Organophosphate esters (OPEs) are widely used as an additive in flame retardants, plasticizers, lubricants, consumer chemicals, and foaming agents. They can accumulate in aquatic organisms from water (waterborne exposure) and food (dietary exposure). However, the bioaccumulation characteristics and relative importance of different exposure routes to the bioaccumulation of OPEs are relatively poorly understood. In this study, Daphnia magna were exposed to fo typical OPEs (tris(2-chloroethyl) phosphate (TCEP), tris(1,3-dichloro-2-propyl) phosphate (TDCIPP), tris(2-butoxyethyl) phosphate (TBOEP),

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12

Zhou, Guorui, Yizhang Zhang, Ziye Wang, Mingrui Li, Haiming Li, and Chen Shen. "Distribution Characteristics and Ecological Risk Assessment of Organophosphate Esters in Surface Soils of China." Toxics 12, no. 9 (2024): 686. http://dx.doi.org/10.3390/toxics12090686.

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The chemical flame retardants represented by organophosphate esters (OPEs) are widely used and have a serious impact on the environment. In this study, we collected data on the exposure levels of ten OPEs in Chinese soils in recent years and performed an ecological risk assessment. The results showed that the levels of OPEs varied considerably throughout different regions of China, with high exposure levels in highly urbanized or industrialized areas such as Guangdong Province and Northeast China, where the mean value was >200 ng/g. The content of OPEs in the soil in industrial and commerci

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13

Zhang, Li, Yongze Xing, Peng Zhang, Xin Luo, and Zengyuan Niu. "Organophosphate Triesters and Their Transformation Products in Sediments of Mangrove Wetlands in the Beibu Gulf, South China Sea." Molecules 29, no. 3 (2024): 736. http://dx.doi.org/10.3390/molecules29030736.

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As emerging pollutants, organophosphate esters (OPEs) have been reported in coastal environments worldwide. Nevertheless, information on the occurrence and ecological risks of OPEs, especially the related transformation products, in mangrove wetlands is scarce. For the first time, the coexistence and distribution of OP triesters and their transformation products in three mangrove wetlands in the Beibu Gulf were investigated using ultrasonication and solid-phase extraction, followed by UHPLC-MS/MS detection. The studied OPEs widely existed in all the sampling sites, with the total concentration

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14

Luo, Haiying, Yanping Xian, Xindong Guo, et al. "Dispersive Liquid-Liquid Microextraction Combined with Ultrahigh Performance Liquid Chromatography/Tandem Mass Spectrometry for Determination of Organophosphate Esters in Aqueous Samples." Scientific World Journal 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/162465.

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A new technique was established to identify eight organophosphate esters (OPEs) in this work. It utilised dispersive liquid-liquid microextraction in combination with ultrahigh performance liquid chromatography/tandem mass spectrometry. The type and volume of extraction solvents, dispersion agent, and amount of NaCl were optimized. The target analytes were detected in the range of 1.0–200 µg/L with correlation coefficients ranging from 0.9982 to 0.9998, and the detection limits of the analytes were ranged from 0.02 to 0.07 µg/L(S/N=3). The feasibility of this method was demonstrated by identif

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Viott, R. C., T. A. Menezes, A. P. G. Mellagi, M. L. Bernardi, I. Wentz, and F. P. Bortolozzo. "Performance of low birth-weight piglets upon protein-energy and/or colostrum supplementation." Arquivo Brasileiro de Medicina Veterinária e Zootecnia 70, no. 4 (2018): 1293–300. http://dx.doi.org/10.1590/1678-4162-9798.

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ABSTRACT The study aimed to investigate the effect of oral protein-energy supplement (OPES) and/or extra colostrum within the first few hours of life on the survival and growth performance of low birth-weight piglets during the suckling period. Based upon nutritional strategy, low-birth-weight piglets (804−1309g) were randomly allocated into four groups: C0S0 (control group, n= 300) - no supplementation; C1S0 (n= 299) - supplementation with 50mL of a colostrum pool through an orogastric tube; C0S1 (n= 298) - oral supplementation with 8mL oral OPES; C1S1 (n= 297) - supplementation with both 50m

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Waterstone, Marv. "T(r)Opes: Geographicus Interruptus." Environment and Planning A: Economy and Space 36, no. 3 (2004): 481–89. http://dx.doi.org/10.1068/a3658.

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Ha, Trinh Thu, Nguyen Duc Cuong, Le Thi Huyen, and Le Truong Giang. "Determination of organophosphate ester flame retardants in indoor dust and their potential health exposure risk." Vietnam Journal of Chemistry 58, no. 6 (2020): 723–30. http://dx.doi.org/10.1002/vjch.202000039.

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AbstractThis study was conducted to determine organophosphate ester compounds in indoor dust in Hanoi ‐ a populated city in Vietnam. In the study, the concentration and distribution of fifteen organophosphate esters (OPEs) were analyzed in indoor dust specimen. In general, the recorded total concentrations of OPEs in dust ranged from 2.7 to 14.1 μg/g and the average quantities varied from 0.2 to 1.0 μg/g. Particular, 100 % of survey samples were detected signals of OPEs, indeed, tris‐(2‐chloroisopropyl) phosphate (TCPP) and tris(2‐butoxyethyl)phosphate (TBEP) were two of the OPE substances, wh

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18

Wang, Xiaotong, Trang Luu, Marc A. Beal, Tara S. Barton-Maclaren, Bernard Robaire, and Barbara F. Hales. "The Effects of Organophosphate Esters Used as Flame Retardants and Plasticizers on Granulosa, Leydig, and Spermatogonial Cells Analyzed Using High-Content Imaging." Toxicological Sciences 186, no. 2 (2022): 269–87. http://dx.doi.org/10.1093/toxsci/kfac012.

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Abstract The replacement of regulated brominated flame retardants and plasticizers with organophosphate esters (OPEs) has led to their pervasive presence in the environment and in biological matrices. Further, there is evidence that exposure to some of these chemicals is associated with reproductive toxicity. Using a high-content imaging approach, we assessed the effects of exposure to 9 OPEs on cells related to reproductive function: KGN human granulosa cells, MA-10 mouse Leydig cells, and C18-4 mouse spermatogonial cells. The effects of OPEs were compared with those of 2,2′,4,4′-tetrabromodi

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Wang, Junji, Jianzai Lin, Xi Zhang, et al. "Organophosphate Esters and Polybrominated Diphenyl Ethers in Vehicle Dust: Concentrations, Sources, and Health Risk Assessment." Toxics 12, no. 11 (2024): 806. http://dx.doi.org/10.3390/toxics12110806.

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Background: The primary flame retardants in vehicles, organophosphates (OPEs) and polybrominated diphenyl ethers (PBDEs), volatilize and accumulate in the enclosed vehicle environment, posing potential health risks. Amidst the rising number of vehicles, the scrutiny of persistent organic pollutants like OPEs and PBDEs in vehicles is increasing. This study investigates occupational and nonoccupational population exposure to specific OPEs (TnBP, TBOEP, TEHP, TCEP, TCiPP, TDCiPP, TPhP, EHDPP) and PBDEs (BDE-28, BDE-47, BDE-99, BDE-100, BDE-153, BDE-154, BDE-183, BDE-209) in vehicle dust. Methods:

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Fattori, B., P. Giusti, V. Mancini, et al. "ACTA OTORHINOLARYNGOLOGICA ITALICA." Acta Otorhinolaryngologica Italica 36, no. 5 (2016): 395–402. http://dx.doi.org/10.14639/0392-100x-829.

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L’obiettivo di questo studio era quello di confrontare la Videofluoroscopia (VFS), la valutazione endoscopica a fibre ottiche della deglutizione (FEES) e la scintigrafia oro-faringo-esofagea (OPES) per quanto riguarda la caduta pre-deglutitoria, il ristagno post-deglutitorio e l’aspirazione, al fine di valutare l’attendibilità di questi test nel rilevare la disfagia orofaringea. Sessanta pazienti, affetti da disfagia di varia origine, sono stati arruolati nello studio e sottoposti a VFS, FEES e OPES utilizzando un bolo liquido e uno semi-solido. Abbiamo usato la VFS come esame di riferimento.

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Li, Haihong, Mingli Ye, Fangfang Wu, et al. "Determination of Organophosphorus Esters in Fall Protection Equipment by Accelerated Solvent Extraction and Solid-Phase Extraction Coupled with LC-MS/MS Detection." Journal of Analytical Methods in Chemistry 2021 (January 5, 2021): 1–7. http://dx.doi.org/10.1155/2021/8878247.

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An analysis method was established to determine 14 organophosphorus ester (OPE) flame retardants in fall protection equipment by combining accelerated solvent extraction (ASE) and solid-phase extraction (SPE) with high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). The ASE parameters were optimized as follows: static extraction with acetonitrile at 80°C for 5 min for two cycles. The combined extract was purified with the ENVI-18 cartridge before further analysis. A HILIC column was used to separate the OPEs using an acetonitrile/water mixture as the mobile phase with

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Rahim, Abdur, Sugeng Riyadi, Sugino Sugino, Windah Maesaroh, Wiwin Wiwin, and Mustaji Mustaji. "Peran Filsafat Pendidikan dalam Membangun Sistem Pendidikan Terpadu (One Pipe Education System) di Ma’had Al-Zaytun, Indramayu." JIIP - Jurnal Ilmiah Ilmu Pendidikan 8, no. 4 (2025): 4068–74. https://doi.org/10.54371/jiip.v8i4.7623.

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Penelitian ini membahas peran filsafat pendidikan dalam membangun sistem pendidikan terpadu melalui One Pipe Education System (OPES) di Ma’had Al-Zaytun, Indramayu. Pendekatan kualitatif digunakan dengan metode studi literatur dan wawancara untuk menganalisis implementasi OPES dan tantangan yang dihadapi. Hasil penelitian menunjukkan bahwa Penerapan filsafat pendidikan dalam One Pipe Education System (OPES) di Ma’had Al-Zaytun memberikan kontribusi signifikan dalam membangun sistem pendidikan yang terpadu dan berkesinambungan. Filsafat pendidikan menjadi dasar dalam menyusun kurikulum yang men

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Wang, Yujie, Ming Yang, Fushun Wang, Xueping Chen, Minghong Wu, and Jing Ma. "Organophosphate Esters in Indoor Environment and Metabolites in Human Urine Collected from a Shanghai University." International Journal of Environmental Research and Public Health 18, no. 17 (2021): 9212. http://dx.doi.org/10.3390/ijerph18179212.

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In China, organophosphate esters (OPEs) are widely used in indoor environments. However, there is little information regarding the internal and external exposure of university students to OPEs. Therefore, in this study, nine OPEs and eight OPE metabolites (mOPEs) were measured in indoor dust and atmospheric PM2.5 samples from a university campus in Shanghai, as well as in urine samples collected from the university students. The total concentration of OPEs in the indoor dust in female dormitories (1420 ng/g) was approximately twice that in male dormitories (645 ng/g). In terms of indoor PM2.5,

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Da, Shuyan, and Jun Wang. "Occurrence, Bioaccumulation, and Risk Assessment of Organophosphate Esters in Rivers Receiving Different Effluents." Toxics 12, no. 8 (2024): 612. http://dx.doi.org/10.3390/toxics12080612.

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Organophosphate esters (OPEs), as alternatives to brominated flame retardants, are extensively used in both production and daily life, with their environmental contamination and toxic effects being a concern. This study investigated the concentration levels, bioaccumulation, and ecological effects of OPEs in five different effluent-receiving rivers. The results demonstrate that the concentration range of Σ13OPEs across the five rivers was between 142.23 and 304.56 ng/L (mean: 193.50 ng/L). The highest pollution levels of OPEs were found in rivers receiving airport and industrial wastewater, fo

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Harino, Hiroya, Emi Yatsuzuka, Chiaki Yamao, Masaaki Ueno, and Madoka Ohji. "Current status of organophosphorus compounds contamination in Maizuru Bay, Japan." Journal of the Marine Biological Association of the United Kingdom 94, no. 1 (2013): 43–49. http://dx.doi.org/10.1017/s002531541300129x.

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The concentrations of organophosphoric acid triesters (OPEs) in water samples from Maizuru Bay were in the range of 3.0–62 ng/l. In general, the concentrations of OPEs were found in the order of TBXP > TDCPP > TCEP > TBP > TCP > TPP > TEP. The organophosphorous pesticides (OPPs) diazinon, fenitrothion, iprobenfos and chlorpyrifos were detected in water samples. The concentrations of OPEs in sediment from Maizuru Bay were in the range of <0.5–56 µg kg−1 dry weight (dw). Among OPPs, diazinon in sediment samples were in the range of 1.8–71 µg kg−1 dw. However, the detection f

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Li, Xiaomin, Nannan Zhao, Jie Fu, et al. "Organophosphate Diesters (Di-OPEs) Play a Critical Role in Understanding Global Organophosphate Esters (OPEs) in Fishmeal." Environmental Science & Technology 54, no. 19 (2020): 12130–41. http://dx.doi.org/10.1021/acs.est.0c03274.

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Rajappan, Sinu C., Olav Vestrheim, Mona Sharafi, Jianing Li, and Severin T. Schneebeli. "Carbonyl-to-Alkyne Electron Donation Effects in up to 10-nm-Long, Unimolecular Oligo(p-phenylene ethynylenes)." Organic Materials 03, no. 02 (2021): 337–45. http://dx.doi.org/10.1055/s-0041-1730899.

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We synthesized some of the longest unimolecular oligo(p-phenylene ethynylenes) (OPEs), which are fully substituted with electron-withdrawing ester groups. An iterative convergent/divergent (a.k.a. iterative exponential growth – IEG) strategy based on Sonogashira couplings was utilized to access these sequence-defined macromolecules with up to 16 repeating units and 32 ester substituents. The carbonyl groups of the ester substituents interact with the triple bonds of the OPEs, leading to (i) unusual, angled triple bonds with increased rotational barrier, (ii) enhanced conformational disorder, a

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Liu, Yunlang, Tingting Zhu, Zuoming Xie, et al. "Human Exposure to Chlorinated Organophosphate Ester Flame Retardants and Plasticizers in an Industrial Area of Shenzhen, China." International Journal of Environmental Research and Public Health 19, no. 5 (2022): 3126. http://dx.doi.org/10.3390/ijerph19053126.

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Human exposure to organophosphate esters (OPEs) is more pervasive in industrial areas manufacturing OPE-related products. OPE exposure is of great concern due to its associations with adverse health effects, while studies on OPE exposure in industrial districts are scarce. This study aimed to assess human exposure to OPEs in a typical industrial area producing large amounts of OPE-related products in Shenzhen, China. Tris (2-chloroethyl)-phosphate (TCEP), tris (2-chloroisopropyl) phosphate (TCPP) and other common OPEs were analyzed in urine (n = 30) and plasma (n = 21) samples. Moreover, we me

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Shimazu, Haruki. "Characteristics of Organophosphate Ester Formation during Smoking." Environment and Pollution 7, no. 2 (2018): 32. http://dx.doi.org/10.5539/ep.v7n2p32.

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This study examines the occurrence of organophosphate esters (OPEs) in cigarettes and sidestream cigarette smoke and to see the OPE formation characteristics during smoking. All seven OPEs in both gas and particulate phases were measured in sidestream cigarette smoke for four brands of cigarettes. Tributyl phosphate (TBP), tris(2-butoxyethyl) phosphate (TBEP), tris(2-chloroethyl) phosphate (TCEP), and triphenyl phosphate (TPP) were found frequently. Median total OPE increases in the air samples during smoking were 56.2 ng per cigarette for gas-phase OPEs and 2360 ng per cigarette for particula

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Fukushima, M., S. Kawai, and Y. Yamaguchi. "Behavior of Organophosphoric Acid Triesters in Japanese Riverine and Coastal Environment." Water Science and Technology 25, no. 11 (1992): 278. http://dx.doi.org/10.2166/wst.1992.0302.

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The long-term monitoring of organophosphoric acid triesters started in 1976 in the Yodo River basin; Lake Biwa, Yodo River and the rivers in Osaka City. An extensive survey was also conducted in the Yamato River and Osaka Bay, Japan. This report presents the current levels and distributions of OPEs as well as the historical trend of TDCPP. Some or all of OPEs studied here have been detected in the entire water samples over the monitoring period. It was clear that OPEs were ubiquitous pollutants in the river and coastal waters. Total OPE levels ranged from 0.4 to 2.4 µgl−1 in the Yodo River bas

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Chen, Charlise Xinyi, Han Yan, and Barbara Hales. "Gestational and early postnatal exposure to a mixture of organophosphate ester flame retardants found in Canadian house dust on hindlimb skeletal development in postnatal day 4 rats." McGill Science Undergraduate Research Journal 15, no. 1 (2020): 18–23. http://dx.doi.org/10.26443/msurj.v15i1.5.

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Background: Ever since organophosphate esters (OPEs) became the mainstream replacement for organobromine compounds in fire retardants (FRs), numerous studies have explored their potential as endocrine disruptors and developmental toxicants. The purpose of this study is to investigate the impact of gestational and early postnatal exposure of OPE mixtures on the ossification of hindlimb phalangeal in postnatal day 4 (PND4) rat pups, as the amount of OPEs within the diet mixture is relative to its composition in Canadian household dust.Methods: Male and female adult Charles River Sprague-Dawley r

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Solanke, Adebayo, Lukasz Talalaj, Claire Graham, and Henry Alegria. "Organophosphate Flame Retardants in Indoor Dust in the Tampa Bay (Florida) Area." Toxics 13, no. 6 (2025): 508. https://doi.org/10.3390/toxics13060508.

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As polybrominated diphenyl ethers were phased out as flame retardants and plasticizers, increasing quantities of organophosphate triesters (OPEs) have been used as replacements. Despite a surge in reports on levels and profiles of OPEs, especially in indoor environments, and the potential exposure, there are still understudied areas with no data on the levels of these chemicals. We carried out the first study investigating levels and profiles of OPEs in indoor dust from such an area, the Tampa Bay (Florida) area. ∑13OPEs measured at each site ranged from 545 to 502,086 ng g−1, with overall med

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Mcconnell, Patrick. "Prime loss: A case study in operational risk." Journal of Risk Management in Financial Institutions 3, no. 1 (2010): 84. http://dx.doi.org/10.69554/uiej4815.

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In march 2008, opes prime, a small stockbroker in melbourne, australia, was placed into administration. this set off a chain of events that caused anz, one of australia’s largest banks, to become involved in a series of messy legal actions. by the end of 2008, losses at the bank had been estimated to exceed a$250m, with litigation still pending. the losses sustained by anz in the opes case constitute an ‘operational risk loss event’ as defined under new banking regulations, basel ii. unlike significant operational risk losses at other banks, such as those sustained by the national australia ba

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Monge, Florencia A., Adeline M. Fanni, Patrick L. Donabedian, et al. "Selective In Vitro and Ex Vivo Staining of Brain Neurofibrillary Tangles and Amyloid Plaques by Novel Ethylene Ethynylene-Based Optical Sensors." Biosensors 13, no. 2 (2023): 151. http://dx.doi.org/10.3390/bios13020151.

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The identification of protein aggregates as biomarkers for neurodegeneration is an area of interest for disease diagnosis and treatment development. In this work, we present novel super luminescent conjugated polyelectrolyte molecules as ex vivo sensors for tau-paired helical filaments (PHFs) and amyloid-β (Aβ) plaques. We evaluated the use of two oligo-p-phenylene ethynylenes (OPEs), anionic OPE12- and cationic OPE24+, as stains for fibrillar protein pathology in brain sections of transgenic mouse (rTg4510) and rat (TgF344-AD) models of Alzheimer’s disease (AD) tauopathy, and post-mortem brai

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THIELEMANS, K. "A MATHEMATICA™ PACKAGE FOR COMPUTING OPERATOR PRODUCT EXPANSIONS." International Journal of Modern Physics C 02, no. 03 (1991): 787–98. http://dx.doi.org/10.1142/s0129183191001001.

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A general purpose Mathematica™ package for computing Operator Product Expansions of composite operators in meromorphic conformal field theory is described. Given the OPEs for a set of “basic” fields, OPEs of arbitrarily complicated composites can be computed automatically. Normal ordered products are always reduced to a standard form. Two explicit examples are presented: the conformal anomaly for superstrings and a free field realization for the [Formula: see text] Kač-Moody-algebra.

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Gangemi, Chiara Maria Antonietta, Anna Barattucci, and Paola Maria Bonaccorsi. "A Portrait of the OPE as a Biological Agent." Molecules 26, no. 11 (2021): 3088. http://dx.doi.org/10.3390/molecules26113088.

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Oligophenylene ethynylenes, known as OPEs, are a sequence of aromatic rings linked by triple bonds, the properties of which can be modulated by varying the length of the rigid main chain or/and the nature and position of the substituents on the aromatic units. They are luminescent molecules with high quantum yields and can be designed to enter a cell and act as antimicrobial and antiviral compounds, as biocompatible fluorescent probes directed towards target organelles in living cells, as labelling agents, as selective sensors for the detection of fibrillar and prefibrillar amyloid in the prot

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Reine, Pablo, Araceli G. Campaña, Luis Alvarez de Cienfuegos, et al. "Chiral double stapled o-OPEs with intense circularly polarized luminescence." Chemical Communications 55, no. 72 (2019): 10685–88. http://dx.doi.org/10.1039/c9cc04885e.

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Matarranz, Beatriz, Goutam Ghosh, Ramesh Kandanelli, Angel Sampedro, Kalathil K. Kartha, and Gustavo Fernández. "Understanding the role of conjugation length on the self-assembly behaviour of oligophenyleneethynylenes." Chemical Communications 57, no. 40 (2021): 4890–93. http://dx.doi.org/10.1039/d1cc01054a.

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Radić, Kristina, Bisera Jurišić Dukovski, and Dubravka Vitali Čepo. "Influence of Pomace Matrix and Cyclodextrin Encapsulation on Olive Pomace Polyphenols’ Bioaccessibility and Intestinal Permeability." Nutrients 12, no. 3 (2020): 669. http://dx.doi.org/10.3390/nu12030669.

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Olive pomace is a rich source of biologically active compounds, mainly polyphenols. Recently, an efficient and sustainable cyclodextrin (CD)-enhanced extraction was developed. It enabled a relatively simple formulation of high-quality olive pomace extracts (OPEs) that can be used as alternative sources of olive-derived polyphenols in the nutrition and pharma industries. However, biological effects and nutraceutical potential of OPEs are primarily limited by generally low oral bioavailability of major polyphenols (hydroxytyrosol and its derivatives) that can be significantly influenced by OPE m

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Resa, Sandra, Pablo Reiné, Luis Álvarez de Cienfuegos, et al. "Optically active Ag(i): o-OPE helicates using a single homochiral sulfoxide as chiral inducer." Organic & Biomolecular Chemistry 17, no. 36 (2019): 8425–34. http://dx.doi.org/10.1039/c9ob01573f.

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Milwan, Milwan, Amud Sunarya, and Tora Akadira. "Strengthening Indonesia's Open Proportional Electoral System: A SOAR Analysis for 2024 Implementation Strategy." Ilomata International Journal of Social Science 6, no. 1 (2025): 165–85. https://doi.org/10.61194/ijss.v6i1.1528.

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This research investigates the enhancement of Indonesia's Open Proportional Electoral System (OPES) through a SOAR (Strengths, Opportunities, Aspirations, Results) analysis to strategize its implementation for the 2024 elections. Utilizing a comprehensive literature review method, the study analyzed 984 articles from Google Scholar and 1000 from Crossref, narrowing down to eight pertinent studies published within the last three years. The SOAR analysis revealed key strengths of the OPES, including increased political plurality and direct voter engagement, while identifying opportunities for re

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Ruan, Xinchao, Qian Lu, and Zeyu Yang. "Analytical method development for determining polycyclic aromatic hydrocarbons and organophosphate esters in indoor dust based on solid phase extraction and gas chromatography/mass spectrometry." Analytical Methods 8, no. 7 (2016): 1690–98. http://dx.doi.org/10.1039/c5ay02789f.

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Wu, Zhijiang, Jinping Liu, and Ying Peng. "QuEChERS purification prior to stable isotope dilution-ultra-high performance liquid chromatography tandem mass spectrometry to determine organophosphate esters of trace amounts in dairy products." Analytical Methods 9, no. 15 (2017): 2290–98. http://dx.doi.org/10.1039/c6ay03162e.

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Si, Hua-Yan, Le-Jia Wang, Wen-Jie Feng, et al. "Facilely controlling the Förster energy transfer efficiency of dendron encapsulated conjugated organic molecular wire–CdSe quantum dot nanostructures." New Journal of Chemistry 39, no. 3 (2015): 1916–21. http://dx.doi.org/10.1039/c4nj01888e.

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Wang, Yiping, Zhenxia Du, Yun Zhang, Lili Zhou, and Wenlian Yu. "Development of a rapid detection method for eight organophosphate esters in plastic samples from automobile interiors using ultra-performance liquid chromatography tandem mass spectrometry with microwave assisted extraction." Analytical Methods 7, no. 23 (2015): 9861–66. http://dx.doi.org/10.1039/c5ay02077h.

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Percy, Zana, Ann M. Vuong, Yingying Xu, et al. "Maternal Urinary Organophosphate Esters and Alterations in Maternal and Neonatal Thyroid Hormones." American Journal of Epidemiology 190, no. 9 (2021): 1793–802. http://dx.doi.org/10.1093/aje/kwab086.

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Abstract Production of organophosphate esters (OPEs), which represent a major flame-retardant class present in consumer goods, has increased over the past 2 decades. Experimental studies suggest that OPEs may be associated with thyroid hormone disruption, but few human studies have examined this association. We quantified OPE metabolites in the urine of 298 pregnant women from Cincinnati, Ohio, in the Health Outcomes and Measures of the Environment Study (enrolled 2003–2006) at 3 time points (16 and 26 weeks’ gestation, and at delivery), and thyroid hormones in 16-week maternal and newborn cor

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Ding, Jiaqi, Wenxin Liu, Hong Zhang, Lingyan Zhu, Lin Zhu, and Jianfeng Feng. "Liver-Based Probabilistic Risk Assessment of Exposure to Organophosphate Esters via Dust Ingestion Using a Physiologically Based Toxicokinetic (PBTK) Model." International Journal of Environmental Research and Public Health 18, no. 23 (2021): 12469. http://dx.doi.org/10.3390/ijerph182312469.

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Organophosphate esters (OPEs) are widely used and harmful to organisms and human health. Dust ingestion is an important exposure route for OPEs to humans. In this study, by integrating ToxCast high-throughput in vitro assays with in vitro to in vivo extrapolation (IVIVE) via physiologically based Toxicokinetic (PBTK) modeling, we assessed the hepatocyte-based health risk for humans around the world due to exposure to two typical OPEs (TPHP and TDCPP) through the dust ingestion exposure route. Results showed that the health guidance value of TPHP and TCDPP obtained in this study was lower than

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Gathof, Annie, Tess Bonanno, Paige Rossicone, and Adelaide E. Clark. "Improved and Novel Methods for Investigating Organophosphate Esters in Particulate Matter." Analytica 5, no. 4 (2024): 471–80. http://dx.doi.org/10.3390/analytica5040032.

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A pressurized liquid extraction (PLE) method for the extraction of 31 organophosphate esters (OPEs) and novel organophosphate esters (NOPEs) has been developed. Unlike previously published methods, this method utilizes the high-throughput nature of PLE (as opposed to Soxhlet or sonication methods) without using potentially harmful organic solvents like methylene chloride. Combinations of hexane and acetone and hexane and ethyl acetate at various temperatures were examined. Extracts were concentrated and analyzed via gas chromatography–mass spectrometry. The final optimized method utilized 1:1

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Morcillo, Sara P., Delia Miguel, Luis Álvarez de Cienfuegos, et al. "Stapled helical o-OPE foldamers as new circularly polarized luminescence emitters based on carbophilic interactions with Ag(i)-sensitivity." Chemical Science 7, no. 9 (2016): 5663–70. http://dx.doi.org/10.1039/c6sc01808d.

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Herzog, Christopher P. "OPEs and 4-point functions in AdS/CFT correspondence." Journal of High Energy Physics 2001, no. 02 (2001): 038. http://dx.doi.org/10.1088/1126-6708/2001/02/038.

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