Transport and environmental risks of perfluoroalkyl acids in a large irrigation and drainage system for agricultural production

Zhang, Meng; Wang, Pei; Lü, Yonglong; Shi, Yunfeng; Sun, Bin; Li, Xiaoqian; Shi, Song; Yu, Mingzhou; Zhao, Jixin; Du, Daolin; Qin, Wenyou; Wang, Ting; Han, Guopeng; Baninla, Yvette; Zhang, Anqi

doi:10.1016/j.envint.2021.106856

Cited by 18 publications

(6 citation statements)

References 58 publications

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“…40 The PFOS concentration was relatively low (1.2 ng/L) in this study and corresponded to that of Chinese irrigation water. 41 However, PFOS concentrations exhibited the highest among analytes in irrigation water from the U.S. (26 ng/L) 42 and Australia (11 ng/L). 43 In contrast, HFPO-DA, which shares the same five perfluorinated carbon atoms with PFHxA, had a concentration 3.2 times higher than PFOS, which indicated that emerging substitutes of PFAS such as HFPO-DA are of grave concern and would attract attention in the agricultural environment in the future.…”

Section: ■ Results and Discussionmentioning

confidence: 96%

“…An extremely high level of PFHxA followed by PFOA and PFPeA has been reported in river water collected downstream of a fluororesin manufacturer in Japan . The PFOS concentration was relatively low (1.2 ng/L) in this study and corresponded to that of Chinese irrigation water . However, PFOS concentrations exhibited the highest among analytes in irrigation water from the U.S. (26 ng/L) and Australia (11 ng/L) .…”

Section: Resultsmentioning

confidence: 99%

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Residue Distribution and Daily Exposure of Per- and Polyfluoroalkyl Substances in Indica and Japonica Rice

Yamazaki

Eun

Taniyasu

et al. 2023

Environ. Sci. Technol.

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Per- and polyfluoroalkyl substances (PFAS) have excellent chemical stability but have adverse environmental impacts of concern. Furthermore, bioaccumulation of PFAS in rice varietieswhich is the essential staple food crop in Asiahas not been verified. Therefore, we cultivated Indica (Kasalath) and Japonica rice (Koshihikari) in the same Andosol (volcanic ash soil) paddy field and analyzed the air, rainwater, irrigated water, soil, and rice plants for 32 PFAS residues, throughout the cultivation to human consumption. During the rice cultivation period, the cultivation environment in atmospheric particulate matter (PM) constituted perfluoroalkyl carboxylic acids (PFCAs), with minimal perfluorinated sulfonic acids (PFSAs). Furthermore, perfluorooctanesulfonic acid (PFOS) migrates at a PM > 10 to drop in a cultivation field and was conducive to leakage and accumulation of PFCAs in air particles in the field environment. Moreover, precipitation was a sources of irrigation water contamination, and cultivated soil with a high carbon content could capture PFSAs and PFCAs (over C10). There were no major differences in residual PFAS trends in the rice varieties, but the distribution of PFAS in the growing soil, air, and rainwater differed. The edible white rice part was mainly affected by irrigation water in both varieties. Monte Carlo simulations of daily exposure assessments of PFOS, PFOA, and perfluorononanic acid showed similar results for Indians consuming Indica rice and Japanese consuming Japonica rice. The results indicate that the ultratrace PFAS residue concentrations and their daily exposure were not cultivar-specific.

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Section: ■ Results and Discussionmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Residue Distribution and Daily Exposure of Per- and Polyfluoroalkyl Substances in Indica and Japonica Rice

Yamazaki

Eun

Taniyasu

et al. 2023

Environ. Sci. Technol.

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“…Findings are more accurate and reliable when eld data, ground truthing, remote sensing, and geodetector analysis are all integrated [13]. Data on ecosystem health, habitat fragmentation, and species distribution may be supplemented by context-speci c information through biodiversity inventories, ecological evaluations, and eld surveys, which can corroborate the results of remote sensing [14].…”

Section: Introductionmentioning

confidence: 97%

Analysis of Changes and Influences Using Remote Sensing and Geodetectors on How Human Activity Affects Ulansuhai Lake Basin Ecology

Vengatesan,

Rajesh,

Kumar

2024

Preprint

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Investigating the Ulansuhai lake in southwest Inner Mongolia, China, this study uses a holistic approach that incorporates many datasets and approaches to evaluate the ecological environmental quality of the area. The specific geographical features and climate of the research region allow for a thorough examination of ecological changes through time. The research finds significant regional and temporal changes in ecological quality, with particular advances in some locations across the study period, through advanced data preparation approaches like remote sensing and model creation. The importance of comprehensive management approaches is highlighted by the fact that important variables including temperature, precipitation, land use patterns, and elevation are significant drivers of ecological health. In addition, the study highlights how complex ecological dynamics may be when multiple factors, including population density and economic conditions, interact with one another. Although this study sheds light on the Ulansuhai lake's ecological condition, it may be even better if future studies included other metrics, including as water quality and biodiversity, to round out the evaluation. In sum, the results of the study support the need for further research in this important area and provide a framework for long-term ecological management strategies in the area.

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“…15 occurrence and potential risks associated with both L-and E-PFAS contamination. 8,9,16 In recent decades, reclaimed water has become an increasingly common source of agricultural irrigation in arid regions across the globe. 17,18 However, traditional urban and industrial wastewater treatment facilities cannot completely eliminate all pollutants from wastewater.…”

Section: ■ Introductionmentioning

confidence: 99%

Combining Freshwater Irrigation with Vegetable Selection to Mitigate the Occurrence of Per- and Polyfluoroalkyl Substances in Edible Vegetable Parts in a Semiarid Farmland in Northwestern China

Cao,

Guo,

Cheng

et al. 2024

ACS EST Water

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Reclaimed-water irrigation can introduce perfluoroalkyl and polyfluoroalkyl substances (PFASs) into farmlands. Selecting an appropriate irrigation method may mitigate the adverse effects of reclaimed-water irrigation; however, the effects of irrigation methods on PFAS pollution in different vegetables have remained poorly studied. Here, we collected soils from a farmland irrigated with long-term reclaimed-water irrigation to cultivate potato, carrot, cabbage, and pak choi using surface and sprinkler irrigation with reclaimed water or freshwater; the concentrations in water, soil, and vegetable samples, bioconcentration and translocation factors, and estimated daily intake of PFASs were quantified. Transitioning from reclaimed water to freshwater did not significantly alter soil PFAS concentrations but generally reduced PFAS concentrations in vegetables. Carrot and potato had lower PFAS concentrations in edible parts and estimated daily intake of PFASs than cabbage and pak choi, suggesting lower health risks for residents consuming carrot and potato. The bioconcentrations of individual perfluoroalkyl carboxylic acids in the edible parts increased with shorter carbon-chain lengths, and cabbage and pak choi accumulated more short-chain PFASs in the edible parts than carrot and potato. This study highlights that implementing procedures to ensure cleaner irrigation water when growing nonleafy vegetables can effectively mitigate PFAS pollution in farmlands.

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Transport and environmental risks of perfluoroalkyl acids in a large irrigation and drainage system for agricultural production

Cited by 18 publications

References 58 publications

Residue Distribution and Daily Exposure of Per- and Polyfluoroalkyl Substances in Indica and Japonica Rice

Residue Distribution and Daily Exposure of Per- and Polyfluoroalkyl Substances in Indica and Japonica Rice

Analysis of Changes and Influences Using Remote Sensing and Geodetectors on How Human Activity Affects Ulansuhai Lake Basin Ecology

Combining Freshwater Irrigation with Vegetable Selection to Mitigate the Occurrence of Per- and Polyfluoroalkyl Substances in Edible Vegetable Parts in a Semiarid Farmland in Northwestern China

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