Preparation and performance features of wristband samplers and considerations for chemical exposure assessment

Anderson, Kim A.; Points, Gary L.; Donald, Carey E.; Dixon, Holly M.; Scott, Richard P.; Wilson, Glenn R.; Tidwell, Lane G.; Hoffman, Peter D.; Herbstman, Julie B.; O’Connell, Steven G.

doi:10.1038/jes.2017.9

Cited by 99 publications

(152 citation statements)

References 67 publications

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“…Our silicone-air partition coefficients (K silicone − air ) determinations are similar to a previous report of silicone-air partition coefficients (K silicone − air ) in Anderson et al (2017); the percentage difference ranges from 0.97 to 11.4% with larger prediction intervals (Table 2 and Fig. 6).…”

Section: Silicone-air Partitioning Coefficientsupporting

confidence: 89%

“…K sa determination as determined in the present study (red line) andAnderson et al (2017) (blue line)…”

supporting

confidence: 53%

“…Silicone passive samplers were pre-conditioned in a vacuum oven, and 20 μL of a PRC solution applied directly to the surface and air dried as in Anderson et al (2017). Silicone samplers were thermally extracted onto Markes sorbent tubes (C3-AAXX-5304) using a Markes micro-chamber/thermal extractor.…”

Section: Silicone Passive Samplersmentioning

confidence: 99%

“…6). In Anderson et al (2017), the silicone was worn on participants' wrists, so sampling occurred at near-constant temperatures. In contrast, average temperatures in this turf study ranged between 20.5 and 25.2°C, and though this is a small range, even small differences in temperature can result in large changes in partitioning.…”

Section: Silicone-air Partitioning Coefficientmentioning

confidence: 99%

“…Chemicals passively sorb into the material up to equilibrium concentrations, but environmental concentrations can still be determined when the samplers are still in the uptake phase. The polyethylene samplers have been used extensively in environmental monitoring and research, and the silicone samplers described in this work are identical to silicone wristbands in previous publications that measure personal exposure (e.g., Anderson et al 2017;Dixon et al 2019;O'Connell et al 2014). Using two polymers concurrently enables a wider range of compounds to be sampled (O'Connell et al 2014) and analyzed with multiple techniques.…”

Section: Introductionmentioning

confidence: 99%

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Artificial turf: chemical flux and development of silicone wristband partitioning coefficients

Donald

Scott

Wilson

et al. 2019

Air Qual Atmos Health

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This work uses passive samplers to identify PAHs and OPAHs not previously associated with artificial turf, and to provide the first quantitative measure of in situ flux of semi-volatile contaminants on artificial turf fields. Both air (1.5-m height) and turf air (immediately above turf surface) were sampled using two sampling materials: low-density polyethylene and silicone. Utilizing a broad targeted screen, we assess both artificial turf and samples of crumb rubber for over 1530 chemicals including pesticides, phthalates, and personal care products. We report the presence of 25 chemicals that have not yet been reported in artificial turf literature, including some with known human effects. The samplers were also quantitatively analyzed for polycyclic aromatic hydrocarbons yielding gas-phase concentrations at breathing height and surface level-the first such report on an artificial turf outdoor field. Turf pore-air and air chemicals were highly correlated at all sites, and particularly at the recently installed indoor site. Flux of chemicals between air and turf surface appear to follow field age although more research is needed to confirm this trend. The thermal extraction process and silicone passive samplers used are suitable for larger-scale environmental sampling campaigns that aim for less solvent and sample processing. By co-deploying silicone passive samplers and conventional lowdensity polyethylene, partitioning coefficients are derived that can be used for future silicone passive air sampling environmental assessment. This study provides an initial demonstration that passive samplers can be used to quantify volatile and semi-volatile organic chemicals from artificial turf.

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Section: Silicone-air Partitioning Coefficientsupporting

confidence: 89%

“…K sa determination as determined in the present study (red line) andAnderson et al (2017) (blue line)…”

supporting

confidence: 53%

Section: Silicone Passive Samplersmentioning

confidence: 99%

Section: Silicone-air Partitioning Coefficientmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Artificial turf: chemical flux and development of silicone wristband partitioning coefficients

Donald

Scott

Wilson

et al. 2019

Air Qual Atmos Health

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Pesticide exposure among Latinx child farmworkers in North Carolina

Arcury

Chen

Arnold

et al. 2021

American J Industrial Med

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Background Although pesticides have adverse effects on child health and development, little research has examined pesticide exposure among child farmworkers. This analysis addresses two specific aims: (1) describes pesticide exposure among Latinx child farmworkers in North Carolina, and (2) delineates factors associated with this pesticide exposure. Methods In 2018 (n = 173) and 2019 (n = 156) Latinx child farmworkers completed interviews and wore silicone wristbands for a single day to measure pesticide exposure. Wristbands were analyzed for 70 pesticides. Results Most Latinx child farmworkers were exposed to multiple pesticides; the most frequent were pyrethroids (69.9% in 2018, 67.9% in 2019), organochlorines (51.4% in 2018, 55.1% in 2019), and organophosphates (51.4% in 2018, 34.0% in 2019). Children were exposed to a mean of 2.15 pesticide classes in 2018 and 1.91 in 2019, and to a mean of 4.06 pesticides in 2018 and 3.34 in 2019. Younger children (≤15 years) had more detections than older children; children not currently engaged in farm work had more detections than children currently engaged in farm work. Migrant child farmworkers had more detections than nonmigrants. For specific pesticides with at least 20 detections, detections and concentrations were generally greater among children not currently engaged in farm work than children currently engaged. Conclusions Children who live in farmworker communities are exposed to a plethora of pesticides. Although further research is needed to document the extent of pesticide exposure and its health consequences, sufficient information is available to inform the policy needed to eliminate this pesticide exposure in agricultural communities.

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Reliable Prediction of the Octanol–Air Partition Ratio

Baskaran

Lei

Wania

2021

Enviro Toxic and Chemistry

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The octanol-air equilibrium partition ratio, K OA , is frequently used to describe the volatility of organic chemicals, whereby n-octanol serves as a substitute for a variety of organic phases ranging from organic matter in atmospheric particles and soils, to biological tissues such as plant foliage, fat, blood and milk, and to polymeric sorbents.Because measured K OA values exist for just over 500 compounds, most of which are nonpolar halogenated aromatics, there is a need for tools that can reliably predict this parameter for a wide range of organic molecules, ideally at different temperatures. The ability of five techniques, specifically poly-parameter linear free energy relationships (ppLFERs) with either experimental or predicted solute descriptors, EPISuite's This article is protected by copyright. All rights reserved. Accepted ArticleKOAWIN, COSMOtherm, and OPERA, to predict the K OA of organic substances, either at 25 °C or at any temperature, was assessed by comparison with all K OA values measured to date. In addition, three different ppLFER equations for K OA were evaluated and a new modified equation is proposed. A technique's performance was quantified with the mean absolute error (MAE), the root mean square error (RMSE), and the estimated uncertainty of future predicted values, i.e. the prediction interval. We also considered each model's applicability domain and accessibility. With an RMSE of 0.37 and a MAE of 0.23 for predictions of log K OA at 25 °C and RMSE of 0.32 and MAE of 0.21 for predictions made at any temperature, the ppLFER equation using experimental solute descriptors predicted the K OA the best. Even if solute descriptors must be predicted in the absence of experimental values, ppLFERs are the preferred method, also because they are easy to use and freely available.

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Preparation and performance features of wristband samplers and considerations for chemical exposure assessment

Cited by 99 publications

References 67 publications

Artificial turf: chemical flux and development of silicone wristband partitioning coefficients

Artificial turf: chemical flux and development of silicone wristband partitioning coefficients

Pesticide exposure among Latinx child farmworkers in North Carolina

Reliable Prediction of the Octanol–Air Partition Ratio

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