Significant input of organophosphate esters through particle-mediated transport into the Pearl River Estuary, China

Jia-Yong Lao; Rongben Wu; Yongsheng Cui; Shiwen Zhou; Yuefei Ruan; Kenneth M.Y. Leung; Jiaxue Wu; Eddy Y. Zeng; Paul K.S. Lam

doi:10.1016/j.jhazmat.2022.129486

Significant input of organophosphate esters through particle-mediated transport into the Pearl River Estuary, China

Jia-Yong Lao
, Rongben Wu
, Yongsheng Cui
, Shiwen Zhou
, Yuefei Ruan^*
, Kenneth M.Y. Leung
, Jiaxue Wu
, Eddy Y. Zeng
, Paul K.S. Lam^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

20 Citations (Scopus)

Abstract

Most organophosphate esters (OPEs) enter the marine environment through atmospheric deposition and surface runoff, yet the role of particle-mediated transport in their inputs and loss processes remains poorly understood. To fill this knowledge gap, samples of size-segregated atmospheric particles, suspended particulate matter (SPM) in seawater, and sediments in the Pearl River Estuary (PRE) were collected and analyzed for OPEs. Total concentrations of atmospheric particulate OPEs showed a decreasing trend with increasing offshore distance in the PRE. The spatial and vertical distribution patterns of OPEs in SPM were diverse, which could be largely affected by physicochemical properties of SPM, marine microbial activities, hydrodynamic conditions, and environmental factors. Sediment in the region close to Modaomen outlet was subject to relatively high OPE concentrations. Approximately 24,100 and 65,100 g d⁻¹ of particulate OPEs were imported into the PRE through atmospheric deposition and surface runoff, respectively; 83,200 g d⁻¹ of which were exported to the open sea. The input and environmental fate of particulate OPEs were found to be dependent on sources, particulate media, and chemical species. The present study provides insights into the influence of OPEs in the PRE through particle-mediated transport and calls for more concern on anthropogenic impact on the estuary.

Original language	English
Article number	129486
Journal	Journal of Hazardous Materials
Volume	438
Online published	27 Jun 2022
DOIs	https://doi.org/10.1016/j.jhazmat.2022.129486
Publication status	Published - 15 Sept 2022

Funding

The present study was supported by the Science, Technology, and Innovation Commission of Shenzhen Municipality (JCYJ20190812155805559), the Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) (No. 311020004), and the Research Grants Council of the Hong Kong SAR Government via the Theme-Based Research Scheme (T21-602/16-R).

Research Keywords

Atmospheric deposition
Mass budget
Organophosphate esters
Particulate phase
Sedimentation

RGC Funding Information

RGC-funded

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10.1016/j.jhazmat.2022.129486

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@article{ca09a7371c614107ba41205bbf74180a,

title = "Significant input of organophosphate esters through particle-mediated transport into the Pearl River Estuary, China",

abstract = "Most organophosphate esters (OPEs) enter the marine environment through atmospheric deposition and surface runoff, yet the role of particle-mediated transport in their inputs and loss processes remains poorly understood. To fill this knowledge gap, samples of size-segregated atmospheric particles, suspended particulate matter (SPM) in seawater, and sediments in the Pearl River Estuary (PRE) were collected and analyzed for OPEs. Total concentrations of atmospheric particulate OPEs showed a decreasing trend with increasing offshore distance in the PRE. The spatial and vertical distribution patterns of OPEs in SPM were diverse, which could be largely affected by physicochemical properties of SPM, marine microbial activities, hydrodynamic conditions, and environmental factors. Sediment in the region close to Modaomen outlet was subject to relatively high OPE concentrations. Approximately 24,100 and 65,100 g d−1 of particulate OPEs were imported into the PRE through atmospheric deposition and surface runoff, respectively; 83,200 g d−1 of which were exported to the open sea. The input and environmental fate of particulate OPEs were found to be dependent on sources, particulate media, and chemical species. The present study provides insights into the influence of OPEs in the PRE through particle-mediated transport and calls for more concern on anthropogenic impact on the estuary.",

keywords = "Atmospheric deposition, Mass budget, Organophosphate esters, Particulate phase, Sedimentation",

author = "Jia-Yong Lao and Rongben Wu and Yongsheng Cui and Shiwen Zhou and Yuefei Ruan and Leung, \{Kenneth M.Y.\} and Jiaxue Wu and Zeng, \{Eddy Y.\} and Lam, \{Paul K.S.\}",

year = "2022",

month = sep,

day = "15",

doi = "10.1016/j.jhazmat.2022.129486",

language = "English",

volume = "438",

journal = "Journal of Hazardous Materials",

issn = "0304-3894",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Significant input of organophosphate esters through particle-mediated transport into the Pearl River Estuary, China

AU - Lao, Jia-Yong

AU - Wu, Rongben

AU - Cui, Yongsheng

AU - Zhou, Shiwen

AU - Ruan, Yuefei

AU - Leung, Kenneth M.Y.

AU - Wu, Jiaxue

AU - Zeng, Eddy Y.

AU - Lam, Paul K.S.

PY - 2022/9/15

Y1 - 2022/9/15

N2 - Most organophosphate esters (OPEs) enter the marine environment through atmospheric deposition and surface runoff, yet the role of particle-mediated transport in their inputs and loss processes remains poorly understood. To fill this knowledge gap, samples of size-segregated atmospheric particles, suspended particulate matter (SPM) in seawater, and sediments in the Pearl River Estuary (PRE) were collected and analyzed for OPEs. Total concentrations of atmospheric particulate OPEs showed a decreasing trend with increasing offshore distance in the PRE. The spatial and vertical distribution patterns of OPEs in SPM were diverse, which could be largely affected by physicochemical properties of SPM, marine microbial activities, hydrodynamic conditions, and environmental factors. Sediment in the region close to Modaomen outlet was subject to relatively high OPE concentrations. Approximately 24,100 and 65,100 g d−1 of particulate OPEs were imported into the PRE through atmospheric deposition and surface runoff, respectively; 83,200 g d−1 of which were exported to the open sea. The input and environmental fate of particulate OPEs were found to be dependent on sources, particulate media, and chemical species. The present study provides insights into the influence of OPEs in the PRE through particle-mediated transport and calls for more concern on anthropogenic impact on the estuary.

AB - Most organophosphate esters (OPEs) enter the marine environment through atmospheric deposition and surface runoff, yet the role of particle-mediated transport in their inputs and loss processes remains poorly understood. To fill this knowledge gap, samples of size-segregated atmospheric particles, suspended particulate matter (SPM) in seawater, and sediments in the Pearl River Estuary (PRE) were collected and analyzed for OPEs. Total concentrations of atmospheric particulate OPEs showed a decreasing trend with increasing offshore distance in the PRE. The spatial and vertical distribution patterns of OPEs in SPM were diverse, which could be largely affected by physicochemical properties of SPM, marine microbial activities, hydrodynamic conditions, and environmental factors. Sediment in the region close to Modaomen outlet was subject to relatively high OPE concentrations. Approximately 24,100 and 65,100 g d−1 of particulate OPEs were imported into the PRE through atmospheric deposition and surface runoff, respectively; 83,200 g d−1 of which were exported to the open sea. The input and environmental fate of particulate OPEs were found to be dependent on sources, particulate media, and chemical species. The present study provides insights into the influence of OPEs in the PRE through particle-mediated transport and calls for more concern on anthropogenic impact on the estuary.

KW - Atmospheric deposition

KW - Mass budget

KW - Organophosphate esters

KW - Particulate phase

KW - Sedimentation

UR - https://www.scopus.com/pages/publications/85133538630

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85133538630&origin=recordpage

U2 - 10.1016/j.jhazmat.2022.129486

DO - 10.1016/j.jhazmat.2022.129486

M3 - RGC 21 - Publication in refereed journal

SN - 0304-3894

VL - 438

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

M1 - 129486

ER -

Significant input of organophosphate esters through particle-mediated transport into the Pearl River Estuary, China

Abstract

Funding

Research Keywords

RGC Funding Information

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TBRS-ExtU-Lead: Diagnosis and Prognosis of Intensifying Eutrophication, Hypoxia and the Ecosystem Consequences around Hong Kong Waters: Coupled Physical-biogeochemical-pollution Studies - Prof. Paul Lam

Cite this

Significant input of organophosphate esters through particle-mediated transport into the Pearl River Estuary, China

Abstract

Funding

Research Keywords

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Projects

TBRS-ExtU-Lead: Diagnosis and Prognosis of Intensifying Eutrophication, Hypoxia and the Ecosystem Consequences around Hong Kong Waters: Coupled Physical-biogeochemical-pollution Studies - Prof. Paul Lam

Cite this