The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Jürgen Bünger - One of the best experts on this subject based on the ideXlab platform.
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exposure of aircraft maintenance technicians to organophosphates from hydraulic fluids and turbine oils a pilot study
International Journal of Hygiene and Environmental Health, 2014Co-Authors: Birgit K Schindler, Stephan Koslitz, Tobias Weiss, Horst Christoph Broding, Thomas Brüning, Jürgen BüngerAbstract:Abstract Hydraulic fluids and turbine oils contain organophosphates like tricresyl phosphate isomers, triphenyl phosphate and tributyl phosphate from very small up to high percentages. The aim of this pilot study was to determine if aircraft maintenance technicians are exposed to relevant amounts of organophosphates. Dialkyl and diaryl phosphate metabolites of seven organophosphates were quantified in pre- and post-shift spot urine samples of technicians ( N = 5) by GC–MS/MS after solid phase extraction and derivatization. Pre- and post shift values of tributyl phosphate metabolites (dibutyl phosphate (DBP): median pre-shift: 12.5 μg/L, post-shift: 23.5 μg/L) and triphenyl phosphate metabolites (diphenyl phosphate (DPP): median pre-shift: 2.9 μg/L, post-shift: 3.5 μg/L) were statistically higher than in a control group from the general population (median DBP: The aircraft maintenance technicians were occupationally exposed to tributyl and triphenyl phosphate but not to tricresyl phosphate, tri-(2-chloroethyl)- and tri-(2-chloropropyl)-phosphate. Further studies are necessary to collect information on sources, routes of uptake and varying exposures during different work tasks, evaluate possible health effects and to set up appropriate protective measures.
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exposure of aircraft maintenance technicians to organophosphates from hydraulic fluids and turbine oils a pilot study
International Journal of Hygiene and Environmental Health, 2014Co-Authors: Birgit K Schindler, Stephan Koslitz, Tobias Weiss, Horst Christoph Broding, Thomas Brüning, Jürgen BüngerAbstract:Hydraulic fluids and turbine oils contain organophosphates like tricresyl phosphate isomers, triphenyl phosphate and tributyl phosphate from very small up to high percentages. The aim of this pilot study was to determine if aircraft maintenance technicians are exposed to relevant amounts of organophosphates. Dialkyl and diaryl phosphate metabolites of seven organophosphates were quantified in pre- and post-shift spot urine samples of technicians (N=5) by GC-MS/MS after solid phase extraction and derivatization. Pre- and post shift values of tributyl phosphate metabolites (dibutyl phosphate (DBP): median pre-shift: 12.5 μg/L, post-shift: 23.5 μg/L) and triphenyl phosphate metabolites (diphenyl phosphate (DPP): median pre-shift: 2.9 μg/L, post-shift: 3.5 μg/L) were statistically higher than in a control group from the general population (median DBP: <0.25 μg/L, median DPP: 0.5 μg/L). No tricresyl phosphate metabolites were detected. The aircraft maintenance technicians were occupationally exposed to tributyl and triphenyl phosphate but not to tricresyl phosphate, tri-(2-chloroethyl)- and tri-(2-chloropropyl)-phosphate. Further studies are necessary to collect information on sources, routes of uptake and varying exposures during different work tasks, evaluate possible health effects and to set up appropriate protective measures.
Birgit K Schindler - One of the best experts on this subject based on the ideXlab platform.
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exposure of aircraft maintenance technicians to organophosphates from hydraulic fluids and turbine oils a pilot study
International Journal of Hygiene and Environmental Health, 2014Co-Authors: Birgit K Schindler, Stephan Koslitz, Tobias Weiss, Horst Christoph Broding, Thomas Brüning, Jürgen BüngerAbstract:Abstract Hydraulic fluids and turbine oils contain organophosphates like tricresyl phosphate isomers, triphenyl phosphate and tributyl phosphate from very small up to high percentages. The aim of this pilot study was to determine if aircraft maintenance technicians are exposed to relevant amounts of organophosphates. Dialkyl and diaryl phosphate metabolites of seven organophosphates were quantified in pre- and post-shift spot urine samples of technicians ( N = 5) by GC–MS/MS after solid phase extraction and derivatization. Pre- and post shift values of tributyl phosphate metabolites (dibutyl phosphate (DBP): median pre-shift: 12.5 μg/L, post-shift: 23.5 μg/L) and triphenyl phosphate metabolites (diphenyl phosphate (DPP): median pre-shift: 2.9 μg/L, post-shift: 3.5 μg/L) were statistically higher than in a control group from the general population (median DBP: The aircraft maintenance technicians were occupationally exposed to tributyl and triphenyl phosphate but not to tricresyl phosphate, tri-(2-chloroethyl)- and tri-(2-chloropropyl)-phosphate. Further studies are necessary to collect information on sources, routes of uptake and varying exposures during different work tasks, evaluate possible health effects and to set up appropriate protective measures.
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exposure of aircraft maintenance technicians to organophosphates from hydraulic fluids and turbine oils a pilot study
International Journal of Hygiene and Environmental Health, 2014Co-Authors: Birgit K Schindler, Stephan Koslitz, Tobias Weiss, Horst Christoph Broding, Thomas Brüning, Jürgen BüngerAbstract:Hydraulic fluids and turbine oils contain organophosphates like tricresyl phosphate isomers, triphenyl phosphate and tributyl phosphate from very small up to high percentages. The aim of this pilot study was to determine if aircraft maintenance technicians are exposed to relevant amounts of organophosphates. Dialkyl and diaryl phosphate metabolites of seven organophosphates were quantified in pre- and post-shift spot urine samples of technicians (N=5) by GC-MS/MS after solid phase extraction and derivatization. Pre- and post shift values of tributyl phosphate metabolites (dibutyl phosphate (DBP): median pre-shift: 12.5 μg/L, post-shift: 23.5 μg/L) and triphenyl phosphate metabolites (diphenyl phosphate (DPP): median pre-shift: 2.9 μg/L, post-shift: 3.5 μg/L) were statistically higher than in a control group from the general population (median DBP: <0.25 μg/L, median DPP: 0.5 μg/L). No tricresyl phosphate metabolites were detected. The aircraft maintenance technicians were occupationally exposed to tributyl and triphenyl phosphate but not to tricresyl phosphate, tri-(2-chloroethyl)- and tri-(2-chloropropyl)-phosphate. Further studies are necessary to collect information on sources, routes of uptake and varying exposures during different work tasks, evaluate possible health effects and to set up appropriate protective measures.
Arbuzov B. - One of the best experts on this subject based on the ideXlab platform.
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Preparation and thermal decomposition of 3,3,3-triphenyl-and 3,3,3-trimethyl-7,8-dimethylbenzo[e]-2,4,3-dithiastibepin
2020Co-Authors: Arbuzov B., Fedotova N.Abstract:1. When 1,2-dimethyl-4,5-di (mercaptomethyl) benzene is reacted with the dichlorides or dialkoxides of triphenyl- and trimethylantimony, 3,3,3-triphenyl- and 3,3,3-trimethyl-7,8-dimethylbenzo[e]-2,4,3-dithiastibepins are obtained. 2. Thermolysis of 3,3,3-triphenyl- and 3,3,3-trimethyl-7,8-dimethylbenzo[e]-2,4,3-dithiastibepin results in the formation of 6,7-dimethylbenzo[d]-2,3-dithiin and triphenyl-and trimethylstibine respectively. © 1987 Plenum Publishing Corporation
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Molecular and crystal structure of 6-methyl-3-methoxy-2, 4,4-triphenyl-3-phenylimino-2,3,4,5-tetrahydro-1, 2,3-diazaphosphorine and 3-anilino-6-methyl-3-oxo-2,4, 4-triphenyl-2,3,4,5-tetrahydro-1,2,3-diazaphosphorine
2020Co-Authors: Struchkov Y., Dianova E., Arbuzov B.Abstract:1. 6-Methyl-3-methoxy-2,4,4-triphenyl-3-phenylimino-2,3,4,5-tetrahydro-1,2,3-diazaphosphorine exists as the monomer in the crystalline state. 2. The crystal and molecule structure of the tetrahydrodiazaphosphorine and its solvate with CH3OH added at the P=N bond was determined. © 1983 Plenum Publishing Corporation
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An electron paramagnetic resonance study of the dissociation of di-(2,4,6-triphenyl)phenyl peroxide and di-(2,4,6-triphenyl)diselenide into free radicals
2020Co-Authors: Arbuzov B., Kataeva L., Kataev E., Il'yasov A.Abstract:1. We have made observations on the electron paramagnetic resonance of the free radical triphenylphenoxyl. 2. For di-(2,4,6-triphenyl)phenyl diselenide, synthesized for the first time, no dissociation into free radicals at room temperature in solution has been found by the EPR method. © 1962 Consultants Bureau Enterprises, Inc
Alexandru T Balaban - One of the best experts on this subject based on the ideXlab platform.
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serendipitous one pot formation of 2 3 7 triphenylcyclopenta c pyran from 1 2 diphenylethanedione benzil and cyclopentadiene
New Journal of Chemistry, 2001Co-Authors: M Banciu, Eduardo E Castellano, Javier Ellena, Ionel Haiduc, Constantin Draghici, Alexandru T BalabanAbstract:The reaction of 1,2-diphenylethanedione (“benzil”) with cyclopentadiene in the presence of sodium methoxide unexpectedly afforded a novel 2,3,7-triphenyl derivative of the bicyclic cyclopenta[c]pyran. The structure was elucidated by physical methods (IR, UV/VIS, 1H-NMR, 13C-NMR MS) and a single-crystal X-ray analysis.
Stephan Koslitz - One of the best experts on this subject based on the ideXlab platform.
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exposure of aircraft maintenance technicians to organophosphates from hydraulic fluids and turbine oils a pilot study
International Journal of Hygiene and Environmental Health, 2014Co-Authors: Birgit K Schindler, Stephan Koslitz, Tobias Weiss, Horst Christoph Broding, Thomas Brüning, Jürgen BüngerAbstract:Abstract Hydraulic fluids and turbine oils contain organophosphates like tricresyl phosphate isomers, triphenyl phosphate and tributyl phosphate from very small up to high percentages. The aim of this pilot study was to determine if aircraft maintenance technicians are exposed to relevant amounts of organophosphates. Dialkyl and diaryl phosphate metabolites of seven organophosphates were quantified in pre- and post-shift spot urine samples of technicians ( N = 5) by GC–MS/MS after solid phase extraction and derivatization. Pre- and post shift values of tributyl phosphate metabolites (dibutyl phosphate (DBP): median pre-shift: 12.5 μg/L, post-shift: 23.5 μg/L) and triphenyl phosphate metabolites (diphenyl phosphate (DPP): median pre-shift: 2.9 μg/L, post-shift: 3.5 μg/L) were statistically higher than in a control group from the general population (median DBP: The aircraft maintenance technicians were occupationally exposed to tributyl and triphenyl phosphate but not to tricresyl phosphate, tri-(2-chloroethyl)- and tri-(2-chloropropyl)-phosphate. Further studies are necessary to collect information on sources, routes of uptake and varying exposures during different work tasks, evaluate possible health effects and to set up appropriate protective measures.
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exposure of aircraft maintenance technicians to organophosphates from hydraulic fluids and turbine oils a pilot study
International Journal of Hygiene and Environmental Health, 2014Co-Authors: Birgit K Schindler, Stephan Koslitz, Tobias Weiss, Horst Christoph Broding, Thomas Brüning, Jürgen BüngerAbstract:Hydraulic fluids and turbine oils contain organophosphates like tricresyl phosphate isomers, triphenyl phosphate and tributyl phosphate from very small up to high percentages. The aim of this pilot study was to determine if aircraft maintenance technicians are exposed to relevant amounts of organophosphates. Dialkyl and diaryl phosphate metabolites of seven organophosphates were quantified in pre- and post-shift spot urine samples of technicians (N=5) by GC-MS/MS after solid phase extraction and derivatization. Pre- and post shift values of tributyl phosphate metabolites (dibutyl phosphate (DBP): median pre-shift: 12.5 μg/L, post-shift: 23.5 μg/L) and triphenyl phosphate metabolites (diphenyl phosphate (DPP): median pre-shift: 2.9 μg/L, post-shift: 3.5 μg/L) were statistically higher than in a control group from the general population (median DBP: <0.25 μg/L, median DPP: 0.5 μg/L). No tricresyl phosphate metabolites were detected. The aircraft maintenance technicians were occupationally exposed to tributyl and triphenyl phosphate but not to tricresyl phosphate, tri-(2-chloroethyl)- and tri-(2-chloropropyl)-phosphate. Further studies are necessary to collect information on sources, routes of uptake and varying exposures during different work tasks, evaluate possible health effects and to set up appropriate protective measures.
