%0 Journal Article %J J Expo Sci Environ Epidemiol %D 2017 %T Preparation and performance features of wristband samplers and considerations for chemical exposure assessment. %A Kim A Anderson %A Points, Gary L %A Carey E Donald %A Holly Dixon %A Richard P Scott %A Glenn R Wilson %A Lane G Tidwell %A Peter D Hoffman %A Julie Herbstman %A Steven G O'Connell %X

Wristbands are increasingly used for assessing personal chemical exposures. Unlike some exposure assessment tools, guidelines for wristbands, such as preparation, applicable chemicals, and transport and storage logistics, are lacking. We tested the wristband's capacity to capture and retain 148 chemicals including polychlorinated biphenyls (PCBs), pesticides, flame retardants, polycyclic aromatic hydrocarbons (PAHs), and volatile organic chemicals (VOCs). The chemicals span a wide range of physical-chemical properties, with log octanol-air partitioning coefficients from 2.1 to 13.7. All chemicals were quantitatively and precisely recovered from initial exposures, averaging 102% recovery with relative SD ≤21%. In simulated transport conditions at +30 °C, SVOCs were stable up to 1 month (average: 104%) and VOC levels were unchanged (average: 99%) for 7 days. During long-term storage at -20 °C up to 3 (VOCs) or 6 months (SVOCs), all chemical levels were stable from chemical degradation or diffusional losses, averaging 110%. Applying a paired wristband/active sampler study with human participants, the first estimates of wristband-air partitioning coefficients for PAHs are presented to aid in environmental air concentration estimates. Extrapolation of these stability results to other chemicals within the same physical-chemical parameters is expected to yield similar results. As we better define wristband characteristics, wristbands can be better integrated in exposure science and epidemiological studies.Journal of Exposure Science and Environmental Epidemiology advance online publication, 26 July 2017; doi:10.1038/jes.2017.9.

%B J Expo Sci Environ Epidemiol %8 2017 Jul 26 %G eng %R 10.1038/jes.2017.9 %0 Journal Article %J Environ Sci Technol %D 2016 %T PAH and OPAH Flux during the Deepwater Horizon Incident. %A Lane G Tidwell %A Sarah E Allan %A Steven G O'Connell %A Kevin A Hobbie %A Brian W Smith %A Kim A Anderson %X

Passive sampling devices were used to measure air vapor and water dissolved phase concentrations of 33 polycyclic aromatic hydrocarbons (PAHs) and 22 oxygenated PAHs (OPAHs) at four Gulf of Mexico coastal sites prior to, during and after shoreline oiling from the Deepwater Horizon oil spill (DWH). Measurements were taken at each site over a 13 month period, and flux across the water-air boundary was determined. This is the first report of vapor phase and diffusive flux of both PAHs and OPAHs during the DWH. Vapor phase sum PAH and OPAH concentrations ranged between 6.6 and 210 ng/m(3) and 0.02 and 34 ng/m(3) respectively. PAH and OPAH concentrations in air exhibited different spatial and temporal trends than in water, and air-water flux of 13 individual PAHs was shown to be at least partially influenced by the DWH incident. The largest PAH volatilizations occurred at the sites in Alabama and Mississippi at nominal rates of 56 000 and 42 000 ng/m(2) day(-1) in the summer. Naphthalene was the PAH with the highest observed volatilization rate of 52 000 ng/m(2) day(-1) in June 2010. This work represents additional evidence of the DWH incident contributing to air contamination, and provides one of the first quantitative air-water chemical flux determinations with passive sampling technology.

%B Environ Sci Technol %V 50 %P 7489-97 %8 07/2016 %G eng %N 14 %R 10.1021/acs.est.6b02784 %0 Journal Article %J Environ Sci Technol %D 2015 %T Polycyclic Aromatic Hydrocarbon (PAH) and Oxygenated PAH (OPAH) Air-Water Exchange during the Deepwater Horizon Oil Spill. %A Lane G Tidwell %A Sarah E Allan %A Steven G O'Connell %A Kevin A Hobbie %A Brian W Smith %A Kim A Anderson %X

Passive sampling devices were used to measure air vapor and water dissolved phase concentrations of 33 polycyclic aromatic hydrocarbons (PAHs) and 22 oxygenated PAHs (OPAHs) at four Gulf of Mexico coastal sites prior to, during, and after shoreline oiling from the Deepwater Horizon oil spill (DWH). Measurements were taken at each site over a 13 month period, and flux across the water-air boundary was determined. This is the first report of vapor phase and flux of both PAHs and OPAHs during the DWH. Vapor phase sum PAH and OPAH concentrations ranged between 1 and 24 ng/m(3) and 0.3 and 27 ng/m(3), respectively. PAH and OPAH concentrations in air exhibited different spatial and temporal trends than in water, and air-water flux of 13 individual PAHs were strongly associated with the DWH incident. The largest PAH volatilizations occurred at the sites in Alabama and Mississippi in the summer, each nominally 10 000 ng/m(2)/day. Acenaphthene was the PAH with the highest observed volatilization rate of 6800 ng/m(2)/day in September 2010. This work represents additional evidence of the DWH incident contributing to air contamination, and provides one of the first quantitative air-water chemical flux determinations with passive sampling technology.

%B Environ Sci Technol %V 49 %P 141-9 %8 1/2015 %G eng %N 1 %R 10.1021/es503827y %0 Audiovisual Material %D 2014 %T PAH and OPAH air-water flux and toxicity before, during and after shoreline oiling from the DWH Incident %A Lane G Tidwell %E Kim A Anderson %X

Passive sampling devices were used to measure the air vapor phase and water dissolved phase at four Gulf of Mexico coastal sites. Sampling occurred prior to, during and after shoreline oiling concurrent with the Deepwater Horizon oil spill.  Measurements of 33 polycyclic aromatic hydrocarbons (PAHs) and 22 oxygenated PAHs (OPAHs) were taken across all time points and sites, and flux across the water/air boundary was determined.  While aqueous PAH concentrations have been previously reported, all air concentrations are some of the first to represent both vapor phase PAHs and OPAHs during the Deepwater Horizon incident.  The largest vapor phase Σ33airPAH concentrations in air were 24.1ng/m3 in Gulfport, MS during May 2010 and 22.7ng/m3 in Grand Isle, LA during June of the same year. The largest Σ22OPAH vapor phase concentrations in air were 26.6ng/m3 in Gulf Breeze, Florida during May 2010 and 20.6 in Gulfport, MS in May 2010.  Concentrations in May represented air data prior to shoreline oiling. The direction and magnitude of the time-integrated air-water exchange of 13 individual PAHs were strongly influenced by the Deepwater Horizon oil incident.  The largest Σ13 PAH volatilization was 11,200 ng/m2/day and occurred in Gulf Shores, AL in September 2010, with the largest individual PAH volatilization to air was acenapthene at a rate of 6,820ng/m2/day during the same deployment.  This work represent additional evidence of contamination during the Deepwater Horizon oil spill, but provides one of the first examples of flux determination with passive sampling data. In addition to impacting marine waters, the introduction of this volume of oil into this ecosystem combined with the combustion of this material had quantifiable impacts on Gulf of Mexico air chemistry and quality.

 

%B Superfund EAC %8 05/2014 %G eng %0 Generic %D 2013 %T Passive Sampling Capacity Building with the K.C. Donnelly Externship %A Steven G O'Connell %A Lane G Tidwell %A Glenn R Wilson %A Kim A Anderson %B 26th Superfund Research Program Annual Meeting, Baton Rouge LA %8 10/2013 %G eng %0 Generic %D 2012 %T Pilot Study Using LFT to Assess Bioavailable PAHs During Tradtional Fish Smoking %A Lane G Tidwell %A Norman D Forsberg %A Kim A Anderson %B CTUIR Tribal-University Collaboration to Address Tribal Exposures to PAHs and Improve Community Health, Pendleton, OR %8 04/2012 %G eng %0 Audiovisual Material %D 2011 %T Pre- and post- shoreline oiling assessment of bioavailable PAH compounds in coastal waters of the Gulf of Mexico following the Deepwater Horizon oil spill %A Sarah E Allan %A Steven G O'Connell %A Lane G Tidwell %A Kevin A Hobbie %A Brian W Smith %A Glenn R Wilson %A Kim A Anderson %B SETAC – Gulf Oil Spill Focused Topic Meeting %I SETAC – Gulf Oil Spill Focused Topic Meeting %8 04/2011 %G eng