%0 Journal Article %J R Soc Open Sci %D 2019 %T Discovery of common chemical exposures across three continents using silicone wristbands. %A Holly Dixon %A Armstrong, Georgina %A Michael L Barton %A Alan J Bergmann %A Melissa Bondy %A Mary L Halbleib %A Winnifred Hamilton %A Erin N Haynes %A Julie Herbstman %A Peter D Hoffman %A Paul C Jepson %A Molly Kile %A Laurel D Kincl %A Paul J Laurienti %A Paula E North %A Paulik, L Blair %A Petrosino, Joe %A Points, Gary L %A Carolyn M Poutasse %A Diana Rohlman %A Richard P Scott %A Brian W Smith %A Lane G Tidwell %A Cheryl Walker %A Katrina M Waters %A Kim A Anderson %X

To assess differences and trends in personal chemical exposure, volunteers from 14 communities in Africa (Senegal, South Africa), North America (United States (U.S.)) and South America (Peru) wore 262 silicone wristbands. We analysed wristband extracts for 1530 unique chemicals, resulting in 400 860 chemical data points. The number of chemical detections ranged from 4 to 43 per wristband, with 191 different chemicals detected, and 1339 chemicals were not detected in any wristband. No two wristbands had identical chemical detections. We detected 13 potential endocrine disrupting chemicals in over 50% of all wristbands and found 36 chemicals in common between chemicals detected in three geographical wristband groups (Africa, North America and South America). U.S. children (less than or equal to 11 years) had the highest percentage of flame retardant detections compared with all other participants. Wristbands worn in Texas post-Hurricane Harvey had the highest mean number of chemical detections (28) compared with other study locations (10-25). Consumer product-related chemicals and phthalates were a high percentage of chemical detections across all study locations (36-53% and 18-42%, respectively). Chemical exposures varied among individuals; however, many individuals were exposed to similar chemical mixtures. Our exploratory investigation uncovered personal chemical exposure trends that can help prioritize certain mixtures and chemical classes for future studies.

%B R Soc Open Sci %V 6 %P 181836 %8 02/2019 %G eng %N 2 %R 10.1098/rsos.181836 %0 Audiovisual Material %D 2019 %T Discovery of common chemical exposures across three continents using silicone wristbands %A Holly Dixon %A Armstrong, Georgina %A Michael L Barton %A Alan J Bergmann %A Melissa Bondy %A Mary L Halbleib %A Erin N Haynes %A Julie Herbstman %A Winnifred Hamilton %A Peter D Hoffman %A Paul C Jepson %A Molly Kile %A Laurel D Kincl %A Paul J Laurienti %A Paula E North %A LB Paulik %A Petrosino, Joe %A Points, Gary L %A Carolyn M Poutasse %A Diana Rohlman %A Richard P Scott %A Brian W Smith %A Lane G Tidwell %A Cheryl Walker %A Katrina M Waters %A Kim A Anderson %B EMT Research Day, Corvallis, OR %C Corvallis, OR %8 01/2019 %G eng %0 Audiovisual Material %D 2018 %T Comparing chemical exposures across diverse communities using silicone wristbands %A Holly Dixon %A Alan J Bergmann %A Mary L Halbleib %A Erin N Haynes %A Julie Herbstman %A Peter D Hoffman %A Paul C Jepson %A Molly Kile %A Laurel D Kincl %A Paul J Laurienti %A Paula E North %A LB Paulik %A Points, Gary L %A Carolyn M Poutasse %A Diana Rohlman %A Richard P Scott %A Smith BW %A Lane G Tidwell %A Katrina M Waters %A Kim A Anderson %B 3rd Tribal Environmental Health Summit, Corvallis, OR %C Corvallis, Oregon %8 06/2018 %G eng %0 Audiovisual Material %D 2018 %T Comparing Chemical Exposures Across Diverse Communities Using Silicone Wristbands %A Holly Dixon %A Bergmann AJ %A Mary L Halbleib %A Erin N Haynes %A Julie Herbstman %A Peter D Hoffman %A Paul C Jepson %A Molly Kile %A Laurel D Kincl %A Paul J Laurienti %A Paula E North %A LB Paulik %A Points, Gary L %A Carolyn M Poutasse %A Diana Rohlman %A Richard P Scott %A Brian W Smith %A Lane G Tidwell %A Katrina M Waters %A Kim A Anderson %B Total Exposure Health Conference, Bethesda, MD %8 09/2018 %G eng %0 Generic %D 2018 %T Discovery of common chemical exposures across three continents using silicone wristbands %A Holly Dixon %A Armstrong, Georgina %A Michael L Barton %A Bergmann AJ %A Melissa Bondy %A Mary L Halbleib %A Erin N Haynes %A Julie Herbstman %A Winnifred Hamilton %A Peter D Hoffman %A Paul C Jepson %A Molly Kile %A Laurel D Kincl %A Paul J Laurienti %A Paula E North %A LB Paulik %A Petrosino, Joe %A Points, Gary L %A Carolyn M Poutasse %A Diana Rohlman %A Richard P Scott %A Brian W Smith %A Lane G Tidwell %A Cheryl Walker %A Katrina M Waters %A Kim A Anderson %B FSES External Advisory Committee Meeting, Yachats, OR %8 10/2018 %G eng %0 Journal Article %J R Soc Open Sci %D 2016 %T Silicone wristbands detect individuals' pesticide exposures in West Africa. %A Carey E Donald %A Richard P Scott %A Kathy L Blaustein %A Mary L Halbleib %A Sarr, Makhfousse %A Paul C Jepson %A Kim A Anderson %X

We detected between 2 and 10 pesticides per person with novel sampling devices worn by 35 participants who were actively engaged in farming in Diender, Senegal. Participants were recruited to wear silicone wristbands for each of two separate periods of up to 5 days. Pesticide exposure profiles were highly individualized with only limited associations with demographic data. Using a 63-pesticide dual-column gas chromatography-electron capture detector (GC-ECD) method, we detected pyrethoid insecticides most frequently, followed by organophosphate pesticides which have been linked to adverse health outcomes. This work provides the first report of individualized exposure profiles among smallholder farmers in West Africa, where logistical and practical constraints have prevented the use of more traditional approaches to exposure assessment in the past. The wristbands and associated analytical method enabled detection of a broad range of agricultural, domestic, legacy and current-use pesticides, including esfenvalerate, cypermethrin, lindane, DDT and chlorpyrifos. Participants reported the use of 13 pesticide active ingredients while wearing wristbands. All six of the pesticides that were both reportedly used and included in the analytical method were detected in at least one wristband. An additional 19 pesticide compounds were detected beyond those that were reported to be in use, highlighting the importance of measuring exposure in addition to collecting surveys and self-reported use records. The wristband method is a candidate for more widespread use in pesticide exposure and health monitoring, and in the development of evidence-based policies for human health protection in an area where food security concerns are likely to intensify agricultural production and pesticide use in the near future.

%B R Soc Open Sci %V 3 %P 160433 %8 08/2016 %G eng %N 8 %R 10.1098/rsos.160433 %0 Generic %D 2016 %T Silicone wristbands detect individuals' pesticide exposures in West Africa %A Carey E Donald %A Richard P Scott %A Kathy L Blaustein %A Mary L Halbleib %A Sarr, Makhfousse %A Paul C Jepson %A Kim A Anderson %B International Society for Exposure Science Annual Meeting, Utrecht, the Netherlands %8 10/2016 %G eng %0 Audiovisual Material %D 2015 %T Silicone wristbands detect an individual's pesticide exposures in Africa %A Carey E Donald %A Richard P Scott %A Kathy L Blaustein %A Mary L Halbleib %A Sarr, Makhfousse %A Paul C Jepson %A Kim A Anderson %B SETAC North America 36th Annual Meeting. Salt Lake City, Utah %8 10/2015 %G eng %0 Journal Article %J Sci Total Environ %D 2006 %T Selenium accumulation patterns in lotic and lentic aquatic systems. %A Hillwalker, Wendy E %A Paul C Jepson %A Kim A Anderson %K Animals %K Carbon %K Ecosystem %K Environmental Monitoring %K Fishes %K Food Chain %K Geologic Sediments %K Invertebrates %K Rivers %K Selenium %K Time Factors %K Water Movements %K Water Pollutants, Chemical %X

Selenium (Se) concentrations in water column, sediment and insect compartments were measured over 3 years, in conjunction with selected physicochemical parameters, from lotic (flowing water) and lentic (standing water) sites within a single watershed in Utah, USA. There was evidence for steady-state concentrations of total [Se] in the insects, sediment and detritus, while there was no correlation between these concentrations and the concentration in surface water. Insect Se burden may therefore provide a more accurate measurement of food web accumulation risk than surface water Se concentration. The importance of organism-specific factors on Se transfer to higher trophic levels was revealed by the steady-state Se body burden within the same insect taxa occupying similar environmental compartments in both aquatic systems. Additionally, however, insect Se body burdens, even within similar taxa, were up to 7 times greater within the lentic compared with the lotic system, and site-specific biogeochemical processes are also likely to play a role in the pattern and level of Se accumulation between hydrogeochemically different aquatic systems occurring within the same watershed. Though a site-specific relationship was apparent between organic content and sediment and detritus Se concentrations, this factor did not account for insect Se accumulation differences between the lotic and lentic aquatic habitats. If carbon content is to be used as a site-specific predictor of Se accumulation potential, further investigations of it's influence on the food web accumulation rate of Se are required.

%B Sci Total Environ %V 366 %P 367-79 %8 07/2006 %G eng %N 1 %1 http://www.ncbi.nlm.nih.gov/pubmed/16487574?dopt=Abstract %R 10.1016/j.scitotenv.2005.12.024