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Aqueous secondary formation substantially contributes to organophosphate esters in aerosols

Research output: Working paper › Preprint

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Aqueous secondary formation substantially contributes to organophosphate esters in aerosols. / Zhang, Gan; Lv, Shaojun; Tian, Lele et al.
Research Square, 2024.

Research output: Working paper › Preprint

Harvard

Zhang, G, Lv, S, Tian, L, Zhao, S, Jones, K, Chen, D, ZHONG, G, Li, J, Xu, B & Peng, P 2024 'Aqueous secondary formation substantially contributes to organophosphate esters in aerosols' Research Square. https://doi.org/10.21203/rs.3.rs-5360489/v1

APA

Zhang, G., Lv, S., Tian, L., Zhao, S., Jones, K., Chen, D., ZHONG, G., Li, J., Xu, B., & Peng, P. (2024). Aqueous secondary formation substantially contributes to organophosphate esters in aerosols. Research Square. https://doi.org/10.21203/rs.3.rs-5360489/v1

Vancouver

Zhang G, Lv S, Tian L, Zhao S, Jones K, Chen D et al. Aqueous secondary formation substantially contributes to organophosphate esters in aerosols. Research Square. 2024 Nov 1. doi: 10.21203/rs.3.rs-5360489/v1

Author

Zhang, Gan ; Lv, Shaojun ; Tian, Lele et al. / Aqueous secondary formation substantially contributes to organophosphate esters in aerosols. Research Square, 2024.

Bibtex

@techreport{c14688b26a7b454caf23f62e4dee93e0,
title = "Aqueous secondary formation substantially contributes to organophosphate esters in aerosols",
abstract = "Chemicals of emerging concern (CECs), like organophosphate esters (OPEs), are toxic substances threatening human/wildlife health. Yet the atmospheric transformation of CECs remains poorly understood. Here we combine field measurements and partitioning models to test the hypothesis that the secondary formation of OPEs could be enhanced by heterogenous processes in aerosols. We found that hydrophobic OPEs are absorbed favorably into the organic phase, whereas hydrophilic OPEs preferably partition into the aqueous phase. We provide field evidence that enhanced aqueous secondary formation of OPEs occurs in winter, and the magnitude is strongly dependent on aerosol water content. We suggest that dissolved inorganic salts and transitional metals in aerosols impact positively on the formation of particle-bound hydrophilic OPEs, by facilitating their aqueous partitioning and/or oxidation. Our findings highlight the important role of aqueous oxidation chemistry for the fate of CECs in the atmosphere, urging for a better consideration of transformation products in future risk assessment and chemicals management.",
author = "Gan Zhang and Shaojun Lv and Lele Tian and Shizhen Zhao and Kevin Jones and Duohong Chen and Guangcai ZHONG and Jun Li and Buqing Xu and Ping'an Peng",
year = "2024",
month = nov,
day = "1",
doi = "10.21203/rs.3.rs-5360489/v1",
language = "English",
publisher = "Research Square",
type = "WorkingPaper",
institution = "Research Square",

}

RIS

TY - UNPB

T1 - Aqueous secondary formation substantially contributes to organophosphate esters in aerosols

AU - Zhang, Gan

AU - Lv, Shaojun

AU - Tian, Lele

AU - Zhao, Shizhen

AU - Jones, Kevin

AU - Chen, Duohong

AU - ZHONG, Guangcai

AU - Li, Jun

AU - Xu, Buqing

AU - Peng, Ping'an

PY - 2024/11/1

Y1 - 2024/11/1

N2 - Chemicals of emerging concern (CECs), like organophosphate esters (OPEs), are toxic substances threatening human/wildlife health. Yet the atmospheric transformation of CECs remains poorly understood. Here we combine field measurements and partitioning models to test the hypothesis that the secondary formation of OPEs could be enhanced by heterogenous processes in aerosols. We found that hydrophobic OPEs are absorbed favorably into the organic phase, whereas hydrophilic OPEs preferably partition into the aqueous phase. We provide field evidence that enhanced aqueous secondary formation of OPEs occurs in winter, and the magnitude is strongly dependent on aerosol water content. We suggest that dissolved inorganic salts and transitional metals in aerosols impact positively on the formation of particle-bound hydrophilic OPEs, by facilitating their aqueous partitioning and/or oxidation. Our findings highlight the important role of aqueous oxidation chemistry for the fate of CECs in the atmosphere, urging for a better consideration of transformation products in future risk assessment and chemicals management.

AB - Chemicals of emerging concern (CECs), like organophosphate esters (OPEs), are toxic substances threatening human/wildlife health. Yet the atmospheric transformation of CECs remains poorly understood. Here we combine field measurements and partitioning models to test the hypothesis that the secondary formation of OPEs could be enhanced by heterogenous processes in aerosols. We found that hydrophobic OPEs are absorbed favorably into the organic phase, whereas hydrophilic OPEs preferably partition into the aqueous phase. We provide field evidence that enhanced aqueous secondary formation of OPEs occurs in winter, and the magnitude is strongly dependent on aerosol water content. We suggest that dissolved inorganic salts and transitional metals in aerosols impact positively on the formation of particle-bound hydrophilic OPEs, by facilitating their aqueous partitioning and/or oxidation. Our findings highlight the important role of aqueous oxidation chemistry for the fate of CECs in the atmosphere, urging for a better consideration of transformation products in future risk assessment and chemicals management.

UR - https://doi.org/10.21203/rs.3.rs-5360489/v1

U2 - 10.21203/rs.3.rs-5360489/v1

DO - 10.21203/rs.3.rs-5360489/v1

M3 - Preprint

BT - Aqueous secondary formation substantially contributes to organophosphate esters in aerosols

PB - Research Square

ER -