A5053152280- Toxic Organic Pollutants Impact
- Air Quality and Health Impacts
- Atmospheric chemistry and aerosols
- Effects and risks of endocrine disrupting chemicals
- Indoor Air Quality and Microbial Exposure
- Mass Spectrometry Techniques and Applications
- Vehicle emissions and performance
- Analytical Chemistry and Chromatography
- Aquatic Invertebrate Ecology and Behavior
- Advanced Chemical Sensor Technologies
- Marine Bivalve and Aquaculture Studies
- Carcinogens and Genotoxicity Assessment
- Air Quality Monitoring and Forecasting
- Analytical chemistry methods development
- Helminth infection and control
- Parasite Biology and Host Interactions
- Marine Ecology and Invasive Species
- Botany and Plant Ecology Studies
- Demographic Trends and Gender Preferences
- Migration, Identity, and Health
- Bacillus and Francisella bacterial research
- Marine Biology and Environmental Chemistry
- Atmospheric Ozone and Climate
- Vibrio bacteria research studies
- Salmonella and Campylobacter epidemiology
Association pour l'Utilisation du Rein Artificiel dans la région Lyonnaise
2021-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2021-2024
L'Institut Agro
2021-2024
Institut Agro Rennes-Angers
2021
Université de Caen Normandie
2018-2020
Centre National de la Recherche Scientifique
2018-2020
Institut de Recherche pour le Développement
2018-2020
Biologie des Organismes et Écosystèmes Aquatiques
2018-2020
Normandie Université
2018-2020
University of Florida
2016
Polychlorinated biphenyls (PCBs) are persistent pollutants that ubiquitous in the food chain, and detectable amounts blood of almost every person most populations have been examined. Extensive evidence from animal studies shows PCBs neurotoxins, even at low doses. Interpretation human data regarding low-level, early-life PCB exposure subsequent neurodevelopment is problematic because levels were not similarly quantified across studies. We expressed 10 a uniform manner using combination...
Following our first report on elevated polybrominated diphenyl ether (PBDE) concentrations in California women, we expanded investigation to include diverse groups of local women. We analyzed additional adipose and serum samples collected the late 1990s from San Francisco Bay Area women participating a breast cancer study reproductive study, respectively. Adipose (n = 32) were by low-resolution mass spectrometry negative-ion chemical ionization mode, whereas 50) dual-column gas...
We examined predictors of organochlorine concentrations in serum specimens from women who were pregnant the 1960s and participated Child Health Development Study San Francisco Bay Area California. That study enrolled at Kaiser-Permanente Medical Facilities, conducted interviews, drew blood specimens; these centrifuged resulting frozen placed long-term storage. For current investigation, organochlorines measured by dual-column GC-electron capture detection collected 1963-1967 399 during...
Measurements of the biogenic hydrocarbons isoprene and 2‐methyl‐3‐buten‐2‐ol (MBO), their first‐, second‐, third‐generation photooxidation products methacrolein (MACR), methyl vinyl ketone (MVK), acetone, 2‐hydroxy‐2‐methylpropanal (2‐HMPR), glycolaldehyde, hydroxyacetone, methylglyoxal, glyoxal, carbon monoxide (CO), were obtained above a ponderosa pine plantation, near Blodgett Forest Research Station, California on 15–19 August 11–15 September 2000. Diurnal cycles for all compounds...
Polychlorinated biphenyls (PCBs) are industrial chemicals that were used widely for approximately 50 years. Now banned, they still ubiquitous because of their persistence in the environment, food chain, and human fatty tissue. High utero exposures cause developmental deficits accompanied by growth retardation. Studies examining intrauterine at lower have been inconsistent, with most such investigations having relied on surrogate exposure indicators as consumption fish from contaminated...
Gas- and particle-phase emissions from gasoline diesel vehicles operated on chassis dynamometers were collected using annular denuders, quartz filters, PUF substrates. Quinone species measured O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine derivatization in conjunc tion with gas chromatography−mass spectrometry high-performance liquid spectrometry. Nine quinones observed, ranging C6 to C16. New identified motor vehicle exhaust include methyl-1,4-benzoquinone, 2-methyl-1,4-naphthoquinone...
Biogenic volatile organic compound (BVOC) emissions, such as isoprene and terpenes, can be oxidized to form less carbonyls, acids, multifunctional oxygenated products that may condense secondary aerosols (SOA). This research was designed assess the contribution of BVOC emissions SOA in coniferous forests by collecting high‐volume particulate samples for 6 days 5 nights summer 2003. The were analyzed polyols alkanes quantify BVOCs. Terpene oxidation among most abundant chemical species...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTQuantitation of toxaphene in environmental samples using negative ion chemical ionization mass spectrometryDeborah L. Swackhamer, M. Judith. Charles, and Ronald A. HitesCite this: Anal. Chem. 1987, 59, 6, 913–917Publication Date (Print):March 15, 1987Publication History Published online1 May 2002Published inissue 15 March 1987https://pubs.acs.org/doi/10.1021/ac00133a027https://doi.org/10.1021/ac00133a027research-articleACS PublicationsRequest reuse...
Our aim in the present study was to characterize and quantify levels of polychlorinated biphenyls (PCBs) specific polychlorobiphenylol (OH-PCB) metabolites maternal sera from women delivering eastern Slovakia.During 2002-2004, blood samples were collected two Slovak locations: Michalovce district, where PCBs formerly manufactured, Svidnik Stropkov districts, about 70 km north.A total 762 341 pregnant sampled Svidnik/Stropkov, respectively, OH-PCBs measured 131 31. EVALUATION/MEASUREMENTS: We...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIdentification of carbonyl compounds in environmental samplesRichard M. Le Lacheur, Lucinda B. Sonnenberg, Philip C. Singer, Russell F. Christman, and Judith CharlesCite this: Environ. Sci. Technol. 1993, 27, 13, 2745–2753Publication Date (Print):December 1, 1993Publication History Published online1 May 2002Published inissue 1 December 1993https://pubs.acs.org/doi/10.1021/es00049a013https://doi.org/10.1021/es00049a013research-articleACS...
Concentrations of polybrominated diphenyl ethers (PBDEs) were determined in air samples from near suspected sources, namely an indoors computer laboratory, and outdoors at electronics recycling facility, automotive shredding metal facility. The results showed that (1) PBDE concentrations the laboratory higher with computers on compared off, (2) indoor facility as high 650 000 pg/m3 for decabromodiphenyl ether (PBDE 209), (3) 209 up to 1900 downwind fenceline shredding/metal inhalation...
En France, les poissons migrateurs amphihalins font l’objet d’une collecte de données le plus souvent décentralisée, généralement à l’échelle des comités gestion (COGEPOMI). Partant du constat qu’il n’existait pas document synthèse récent nationale sur l’état ces populations, Pôle MIAME a entamé depuis une dizaine d’années la réalisation synthèses bibliographiques. À l’heure actuelle, ciblées ont été rédigées pour lamproie marine, fluviatile, grande alose, l’alose feinte, saumon atlantique...
Les aloses et les lamproies anadromes sont menacées dans une grande partie de leur aire réparti-tion. Ce travail vise à déterminer tendances des populations en France identifier pressions plus probables. Des séries temporelles provenant différentes sources (vidéo-comptage, pêche professionnelle amateur, nids, bulls fronts migration) ont été collectées regroupées selon la similarité leurs tendances. Ces groupes révèlent un déclin important au cours dernières an-nées tant pour que lamproies....
Interest in ambient concentrations of acrolein and other α,β-unsaturated aldehydes dicarbonyls (e.g., crotonaldehyde, methyl glyoxal, malonaldehyde (malondialdehyde)) is growing because either they exist at high levels motor vehicle emissions or arise from photooxidation hydrocarbons emitted mobile sources. In addition, their mutagenic, genotoxic, carcinogenic properties are well-established, the results a dispersion-modeling study regarding health risks posed by 188 hazardous air pollutants...
Acrolein, an unsaturated aldehyde found in both indoor and outdoor air, is considered one of the greatest noncancer health risks all organic air pollutants. Current methods for determining acrolein often employ sorbent-filled cartridges containing a carbonyl derivatizing agent (e.g., dinitrophenylhydrazine). These are limited use compounds due to formation unstable derivatives, coelution similar compounds, long sample collection times, ozone interferences that result poor sensitivity,...
The competition between ion dissociation and ejection during resonant excitation in a quadrupole trap is investigated. Ions of similar mass but with range critical energies for the onset have been examined. effects amplitude duration excitation, well depth which ions are trapped, pressure nature collision gas explored. Once reached, rate increases increased signal. decreases or stays constant as function depending upon species being excited. Increasing trapping relative amount versus does...
Liquid chromatography coupled with atmospheric pressure chemical ionization (APCI) ion trap mass spectrometry (ITMS) is applied to aerosol relevant carbonyls. Characterization of positive and negative detection spectra are presented for 24 model compounds analyzed in their underivatized O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine (PFBHA) oxime forms. The addition PFBHA derivatization enhanced the sensitivity many carbonyls investigated. For all but five examined, a pseudomolecular (M + H)+...
Carbonyls from gasoline-powered light-duty vehicles (LDVs) and heavy-duty diesel-powered (HDDVs) operated on chassis dynamometers were measured by use of an annular denuder−quartz filter−polyurethane foam sampler with O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine derivatization chromatography−mass spectrometry analyses. Two internal standards utilized based carbonyl recovery: 4-fluorobenzaldehyde for <C8 carbonyls 6-fluoro-4-chromanone ≥C8 compounds. Gas- particle-phase emissions 39 aliphatic...
Polychlorinated biphenyls (PCBs) are ubiquitous industrial chemicals that persist in the environment and human fatty tissue. PCBs related to a class of compounds known as dioxins, specifically 2,3,7,8-TCDD (tetrachloro-dibenzodioxin), which has been implicated cause altered sex ratio, especially relation paternal exposures. In 1960's, serum specimens were collected from pregnant women participating Child Health Development Study San Francisco Bay Area. The interviewed their samples stored at...
While the atmospheric fate and transport of biogenic anthropogenic hydrocarbons has been extensively studied, little is known about behavior first-, second-, third-generation photo-oxidation products that arise from OH radical oxidation parent species. The results chamber experiments establish •OH yields carbonyls, dicarbonyls, hydroxycarbonyls, keto-acids. However, generation these in ambient environment. This changing because advent methods rely on...
Hydroxy carbonyls and other were measured in air by sampling with impingers filled an aqueous solution of O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine hydrochloride (PFBHA), further reacting the PFBHA derivatives hydroxy bis(trimethylsilyl)trifluoroacetamide (BSTFA), detecting gas chromatography/ion trap mass spectrometry. Molecular weight determinations ultratrace (pptv) levels presence coeluting interferences was made possible using pentafluorobenzyl alcohol (PFBOH) as a chemical...