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Benzotriazole UV Stabilizers

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https://www.readbyqxmd.com/read/29501761/uv-h-2-o-2-process-stability-and-pilot-scale-validation-for-trace-organic-chemical-removal-from-wastewater-treatment-plant-effluents
#1
David B Miklos, Rebecca Hartl, Philipp Michel, Karl G Linden, Jörg E Drewes, Uwe Hübner
This study investigated the removal of 15 trace organic chemicals (TOrCs) occurring at ambient concentrations from municipal wastewater treatment plant effluent by advanced oxidation using UV/H2 O2 at pilot-scale. Pseudo first-order rate constants (kobs ) for photolytic as well as combined oxidative and photolytic degradation observed at pilot-scale were validated with results from a bench-scale collimated beam device. No significant difference was determined between pilot- and lab-scale performance. During continuous pilot-scale operation at constant UV fluence of 800 mJ/cm2 and H2 O2 dosage of 10 mg/L, the removal of various TOrCs was investigated...
June 1, 2018: Water Research
https://www.readbyqxmd.com/read/29429338/investigating-the-sources-and-transport-of-benzotriazole-uv-stabilizers-during-rainfall-and-snowmelt-across-an-urbanization-gradient
#2
Abha Parajulee, Ying Duan Lei, Ajitha Kananathalingam, Carl P J Mitchell, Frank Wania
Benzotriazole UV stabilizers (BT-UVs) have attracted increasing attention due to their bioaccumulative nature and ubiquitous presence in surface waters. We apply high-frequency sampling in paired watersheds to describe, for the first time, the behavior of BT-UVs in stream channels during snowmelt and rainfall. Relative to a largely agricultural watershed, concentrations of BT-UVs in an urban watershed were 4-90 times greater during rainfall and 3-21 times greater during snowmelt. During rainfall, a decrease in BT-UV concentrations on particles with increasing suspended sediments and streamflow occurred at all urban sites due to input of relatively clean sediments, while both decreases and increases were observed at rural sites...
March 6, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29286648/substituted-diphenylamine-antioxidants-and-benzotriazole-uv-stabilizers-in-aquatic-organisms-in-the-great-lakes-of-north-america-terrestrial-exposure-and-biodilution
#3
Zhe Lu, Amila O De Silva, Daryl J McGoldrick, Wenjia Zhou, Thomas E Peart, Cyril Cook, Gerald R Tetreault, Pamela A Martin, Shane R de Solla
Substituted diphenylamine antioxidants (SDPAs) and benzotriazole UV stabilizers (BZT-UVs) are industrial additives of emerging environmental concern. However, the bioaccumulation, biomagnification, and spatial distribution of these contaminants in the Great Lakes of North America are unknown. The present study addresses these knowledge gaps by reporting SDPAs and BZT-UVs in herring gull (Larus argentatus) eggs, lake trout (Salvelinus namaycush), and their food web in the Great Lakes for the first time. Herring gull eggs showed much higher detection frequency and concentrations of target SDPAs and 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV328) than that of the whole body fish homogenate...
February 6, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29275272/environmental-occurrence-and-distribution-of-organic-uv-stabilizers-and-uv-filters-in-the-sediment-of-chinese-bohai-and-yellow-seas
#4
Christina Apel, Jianhui Tang, Ralf Ebinghaus
Organic UV stabilizers and UV filters are applied to industrial materials and cosmetics worldwide. In plastics they prevent photo-induced degradation, while in cosmetics they protect human skin against harmful effects of UV radiation. This study reports on the occurrence and distribution of organic UV stabilizers and UV filters in the surface sediment of the Chinese Bohai and Yellow Seas for the first time. In total, 16 out of 21 analyzed substances were positively detected. Concentrations ranged from sub-ng/g dw to low ng/g dw...
April 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29262396/benzotriazole-enhances-cell-invasive-potency-in-endometrial-carcinoma-through-ctbp1-mediated-epithelial-mesenchymal-transition
#5
Yiquan Wang, Chencheng Dai, Cheng Zhou, Wenqu Li, Yujia Qian, Juan Wen, Yang Wang, Bing Han, Jingjing Ma, Juan Xu, Ziyi Fu, Hongjie Ruan, Hua Tong, Xuemei Jia
BACKGROUND/AIMS: Benzotriazole (BTR) and its derivatives, such as intermediates and UV stabilizers, are important man-made organic chemicals found in everyday life that have been recently identified as environmental toxins and a threat to female reproductive health. Previous studies have shown that BTR could act as a carcinogen by mimicking estrogen. Environmental estrogen mimics could promote the initiation and development of female cancers, such as endometrial carcinoma, a type of estrogenic-sensitive malignancy...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28756218/occurrence-and-fate-of-substituted-diphenylamine-antioxidants-and-benzotriazole-uv-stabilizers-in-various-canadian-wastewater-treatment-processes
#6
Zhe Lu, Shirley Anne Smyth, Thomas E Peart, Amila O De Silva
Substituted diphenylamine antioxidants (SDPAs) and benzotriazole UV stabilizers (BZT-UVs) are additives used in industrial and consumer products to prevent degradation or color change of materials, but their environmental fate and disposition are not well characterized. In this study, SDPAs and BZT-UVs were analyzed in 68 liquid and 39 solid samples collected from 9 wastewater treatment plants (WWTPs) in Canada to investigate the occurrence and fate of these contaminants. The median concentrations of ΣSDPAs and ΣBZT-UVs was 483 and 76...
November 1, 2017: Water Research
https://www.readbyqxmd.com/read/28708270/transcriptional-and-cellular-effects-of-benzotriazole-uv-stabilizers-uv-234-and-uv-328-in-the-freshwater-invertebrates-chlamydomonas-reinhardtii-and-daphnia-magna
#7
Maeva Giraudo, Guillaume Cottin, Marta Esperanza, Pierre Gagnon, Amila O De Silva, Magali Houde
Benzotriazole ultra violet stabilizers (BZT-UVs) are compounds used in many applications and products to prevent photochemical degradation. Despite their widespread presence in aquatic ecosystems and persistence in the environment, there are very limited data on their effects and toxicity, and their modes of action remain largely unknown. The objectives of the present study were to evaluate the chronic effects of 2 BZT-UVs, 2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol (UV-234) and 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328), on the freshwater green algae Chlamydomonas reinhardtii and the freshwater crustacean Daphnia magna...
December 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28486152/benzotriazole-ultraviolet-stabilizers-alter-the-expression-of-the-thyroid-hormone-pathway-in-zebrafish-danio-rerio-embryos
#8
Xuefang Liang, Jiajia Li, Christopher J Martyniuk, Juan Wang, Yufeng Mao, Huan Lu, Jinmiao Zha
Benzotriazole ultraviolet stabilizers (BUVSs) are widely used in industrial products as well as personal-hygiene products to protect the material or skin from harmful UV-radiation. Due to their persistence and bioaccumulation, BUVSs have been ubiquitously detected in aquatic environments. Although the toxicological effects of BUVSs in aquatic organisms have been previously examined, the effects of BUVSs on the thyroid system have not been adequately addressed. In this study, we assessed putative thyroid disrupting effects of BUVSs (UV-234, UV-326, UV-329 and UV-P) in zebrafish embryos at 1, 10 and 100 μg/L for 96 h...
September 2017: Chemosphere
https://www.readbyqxmd.com/read/27889215/benzotriazole-type-ultraviolet-stabilizers-and-antioxidants-in-plastic-marine-debris-and-their-new-products
#9
Manviri Rani, Won Joon Shim, Gi Myung Han, Mi Jang, Young Kyoung Song, Sang Hee Hong
Ultraviolet stabilizers (UVSs) and antioxidants are the most widely used additives in plastics to enhance the lifetime of polymeric materials. There is growing interest in the roles of plastic marine debris and microplastics as source or vector of toxic substances to marine environment and organisms. However, there is limited information available on plastic associated chemicals, particularly additive chemicals. Therefore, to evaluate their extent of exposure from plastics to the marine environment, we determined UVSs and antioxidants in plastic debris (n=29) collected from beaches along with their corresponding new plastic products in markets (n=27) belonging to food, fisheries, and general use...
February 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/27743791/benzotriazole-uv-328-and-uv-p-showed-distinct-antiandrogenic-activity-upon-human-cyp3a4-mediated-biotransformation
#10
Shulin Zhuang, Xuan Lv, Liumeng Pan, Liping Lu, Zhiwei Ge, Jiaying Wang, Jingpeng Wang, Jinsong Liu, Weiping Liu, Chunlong Zhang
Benzotriazole ultraviolet stabilizers (BUVSs) are prominent chemicals widely used in industrial and consumer products to protect against ultraviolet radiation. They are becoming contaminants of emerging concern since their residues are frequently detected in multiple environmental matrices and their toxicological implications are increasingly reported. We herein investigated the antiandrogenic activities of eight BUVSs prior to and after human CYP3A4-mediated metabolic activation/deactivation by the two-hybrid recombinant human androgen receptor yeast bioassay and the in vitro metabolism assay...
January 2017: Environmental Pollution
https://www.readbyqxmd.com/read/27665778/transcriptome-analyses-demonstrate-that-peroxisome-proliferator-activated-receptor-%C3%AE-ppar%C3%AE-activity-of-an-ultraviolet-absorber-2-2-hydroxy-3-5-di-tert-butylphenyl-benzotriazole-as-possible-mechanism-of-their-toxicity-and-the-gender-differences
#11
COMPARATIVE STUDY
Mutsuko Hirata-Koizumi, Ryota Ise, Hirohito Kato, Takashi Matsuyama, Tomoko Nishimaki-Mogami, Mika Takahashi, Atsushi Ono, Makoto Ema, Akihiko Hirose
2-(2'-Hydroxy-3',5'-di-tert-butylphenyl)benzotriazole (HDBB), the Benzotriazole UV-stabilizer (BUVSs) known as UV-320, is widely used in plastic materials for protection against UV-irradiation. Previously, we reported that oral ingestion of HDBB induce hepatotoxicity including hepatocyte hypertrophy and necrosis in rats and, males was more susceptible compared with females in young rats while no sex-related difference was observed in preweaning rats. Phenotypes observed in our previous study imply involvement of peroxisome proliferator-activated receptor (PPAR) α in HDBB hepatotoxicity, however, direct evidence that HDBB can activate PPARα has not been provided and the mechanism which underlying the gender difference of HDBB hepatotoxicity was not clearly elucidated...
2016: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/27591371/rapid-monitoring-of-residual-uv-stabilizers-in-seawater-samples-from-beaches-using-fabric-phase-sorptive-extraction-and-uhplc-ms-ms
#12
Romualdo B García-Guerra, Sarah Montesdeoca-Esponda, Zoraida Sosa-Ferrera, Abuzar Kabir, Kenneth G Furton, José Juan Santana-Rodríguez
Benzotriazole UV stabilizers (BUVSs) are a group of compounds added to personal care products such as sunscreens, hair dyes, make up formulations, soaps or shampoos, among others. Direct input from beaches or another aquatic recreational areas is the main source of BUVSs incorporation to the environment, where they can be mutagenic, toxic, pseudo-persistent and bioaccumulative. Due to the low levels of concentration of these compounds found in environmental samples, an extraction process is required prior to their determination...
December 2016: Chemosphere
https://www.readbyqxmd.com/read/27477395/distribution-partitioning-and-bioaccumulation-of-substituted-diphenylamine-antioxidants-and-benzotriazole-uv-stabilizers-in-an-urban-creek-in-canada
#13
Zhe Lu, Amila O De Silva, Thomas E Peart, Cyril J Cook, Gerald R Tetreault, Mark R Servos, Derek C G Muir
Substituted diphenylamine antioxidants (SDPAs) and benzotriazole UV stabilizers (BZT-UVs), previously under reported classes of organic contaminants, were determined in sediment, water, and freshwater biota in an urban creek in Canada. SDPAs and BZT-UVs were frequently detected in all matrices including upstream of the urban area in a rural agricultural/woodlot region, suggesting a ubiquitous presence and bioaccumulation of these emerging contaminants. Spatial comparisons were characterized by higher levels of SDPAs downstream compared with the upstream, implying a possible influence of the urban activities on the antioxidant contamination in the sampling area...
September 6, 2016: Environmental Science & Technology
https://www.readbyqxmd.com/read/27425756/simultaneous-determination-of-substituted-diphenylamine-antioxidants-and-benzotriazole-ultra-violet-stabilizers-in-blood-plasma-and-fish-homogenates-by-ultra-high-performance-liquid-chromatography-electrospray-tandem-mass-spectrometry
#14
Zhe Lu, Thomas E Peart, Cyril J Cook, Amila O De Silva
Analytical methods were developed for the determination of eight substituted diphenylamines (SDPAs) and six benzotriazole UV stabilizers (BZT-UVs) in blood plasma and fish homogenate matrices. Liquid-liquid extraction by methyl tert-butyl ether and denaturation by KOH following silica gel packed column clean-up was employed for blood plasma preparation. For the fish homogenate samples, ultrasonic assisted solvent extraction combined with automated gel permeation chromatography and silica gel packed column clean-up was used...
August 26, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/27209124/persistence-temporal-and-spatial-profiles-of-ultraviolet-absorbents-and-phenolic-personal-care-products-in-riverine-and-estuarine-sediment-of-the-pearl-river-catchment-china
#15
Xianzhi Peng, Songsong Xiong, Weihui Ou, Zhifang Wang, Jianhua Tan, Jiabin Jin, Caiming Tang, Jun Liu, Yujuan Fan
A variety of personal care products have been classified as emerging contaminants (ECs). Occurrence, fate, spatial and vertical profiles of 13 ultraviolet absorbents, triclocarban (TCC) and its dechlorinated products, triclosan (TCS), 2-phenylphenol and parabens were investigated in riverine and estuarine sediment of the Pearl River catchment, China. Bisphenol A (BPA), a widely applied plasticizer, was also investigated. The ECs were widely present in the bed sediment. TCC was the most abundant with a maximum concentration of 332ngg-1 dry weight...
February 5, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/26874322/benzotriazole-uv-stabilizers-in-sediments-suspended-particulate-matter-and-fish-of-german-rivers-new-insights-into-occurrence-time-trends-and-persistency
#16
Arne Wick, Björn Jacobs, Uwe Kunkel, Peter Heininger, Thomas A Ternes
Benzotriazole UV stabilizers (BUVSs) are widely applied in plastics to prevent discoloration and to enhance product stability. This study describes for the first time the occurrence of nine different lipophilic BUVSs (UV-326, UV-320, UV-329, UV-350, UV-328, UV-327, UV-928, UV-234 and UV-360) in sediment, suspended particulate matter (SPM) and bream liver samples of German rivers. All investigated BUVSs were detected in sediments and SPM at concentrations in the low ng/g dry weight (dw) range. The so far rarely analyzed compound UV-360 as well as UV-326 were the predominant BUVSs in sediments and SPM from the river Rhine reaching maximum concentrations of 62 and 44 ng/g dw, respectively...
May 2016: Environmental Pollution
https://www.readbyqxmd.com/read/26828949/-co5tp-4-me2bta-6-a-highly-symmetrical-pentanuclear-kuratowski-complex-featuring-tris-pyrazolyl-borate-and-benzotriazolate-ligands
#17
Tamas W Werner, Stephan Reschke, Hana Bunzen, Hans-Albrecht Krug von Nidda, Joachim Deisenhofer, Alois Loidl, Dirk Volkmer
The pentanuclear Co(II) complex [Co5Tp*4(Me2bta)6] containing N-donor ligands (5,6-dimethyl benzotriazolate; Me2bta6) and N-donor capping ligands (tris(3,5-dimethyl-1-pyrazolyl)borate; Tp*) was prepared by a simple and efficient ligand exchange reaction from [Co5Cl4(Me2bta)6] and tetra-n-butyl ammonium tris(3,5-dimethyl-1-pyrazolyl)borate. Compared to the precursor complex [Co5Cl4(Me2bta)6], which contains one Co(II) ion in octahedral and four Co(II) ions in tetrahedral coordination geometry, the title compound features all five Co(II) ions in an octahedral coordination environment while keeping a high complex symmetry...
February 1, 2016: Inorganic Chemistry
https://www.readbyqxmd.com/read/26561444/source-determination-of-benzotriazoles-in-sediment-cores-from-two-urban-estuaries-on-the-atlantic-coast-of-the-united-states
#18
Mark G Cantwell, Julia C Sullivan, David R Katz, Robert M Burgess, J Bradford Hubeny, John King
Benzotriazoles (BZTs) are used in a broad range of commercial and industrial products, particularly as metal corrosion inhibitors and as ultraviolet (UV) light stabilizer additives in plastics and polymers. In this study, dated sediment cores from two east coast estuaries were analyzed for commonly used BZTs. In Narragansett Bay, UV stabilizing BZTs (UV-BZTs) were present at high levels from 1961 on, reflecting their patent date, local production and long-term preservation in sediment. In Salem Sound, UV-BZTs were present at concentrations consistent with other coastal marine locations not influenced by BZT production...
December 15, 2015: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/26536759/-simultaneous-determination-of-ten-benzotriazole-ultraviolet-stabilizers-in-food-contact-plastic-materials-by-solid-phase-extraction-and-ultra-performance-liquid-chromatography-with-tandem-mass-spectrometry
#19
Xinlei Gou, Xinying Zhao, Haitao Chi, Xia Gao, Mingqiang Zhou, Weili Liu
A sensitive method was developed for the simultaneous determination of ten benzotriazole ultraviolet stabilizers in food contact plastic materials by ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). The sample was extracted by methanol-dichloromethane, and purified by a C18 solid-phase extraction (SPE) column. The separation was performed by using water containing 0. 1% (v/v) formic acid and methanol as the mobile phases with gradient elution at a flow rate of 0. 3 mL/min. The electrospray ionization (ESI) source in positive ion mode was used for the analysis of the ten benzotriazole ultraviolet stabilizers in multiple reaction monitoring (MRM) mode...
June 2015: Se Pu, Chinese Journal of Chromatography
https://www.readbyqxmd.com/read/26454115/interactions-of-benzotriazole-uv-stabilizers-with-human-serum-albumin-atomic-insights-revealed-by-biosensors-spectroscopies-and-molecular-dynamics-simulations
#20
Shulin Zhuang, Haifei Wang, Keke Ding, Jiaying Wang, Liumeng Pan, Yanli Lu, Qingjun Liu, Chunlong Zhang
Benzotriazole UV stabilizers (BZTs) belong to one prominent group of ultraviolet (UV) stabilizers and are widely used in various plastics materials. Their large production volumes, frequent detections in the environment and potential toxicities have raised increasing public concern. BZTs can be transported in vivo by transport proteins in plasma and the binding association to transport proteins may serve as a significant parameter to evaluate the bioaccumulative potential. We utilized a novel HSA biosensor, circular dichroism spectroscopy, fluorescence spectroscopy to detect the dynamic interactions of six BZTs (UV-326, UV-327, UV-328, UV-329, UV-P, and BZT) with human serum albumin (HSA), and characterized the corresponding structure-activity relationships (SAR) by molecular dynamics simulations...
February 2016: Chemosphere
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