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Multimedia migration and ecological risks of bisphenol A in semiarid urban rivers: a case study of Xi'an, China.

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Title: Multimedia migration and ecological risks of bisphenol A in semiarid urban rivers: a case study of Xi'an, China.
Authors: Qu, Yajie1 (AUTHOR) yjqu2000@163.com, Yang, Tao1,2 (AUTHOR) tyang@snnu.edu.cn, Zhang, Jiale1 (AUTHOR) z1123793085@163.com, Li, Haiyan1 (AUTHOR) 1125906768@qq.com, Liao, Yilin1 (AUTHOR) 1515626445@qq.com, Lei, Xiangnan1 (AUTHOR) 18700392352@163.com, Yuan, Jiaqi1 (AUTHOR) 1615833350@qq.com
Source: Environmental Monitoring & Assessment. May2026, Vol. 198 Issue 5, p1-19. 19p.
Subject Terms: *Bisphenol A, *Contaminated sediments, *Environmental risk, *Arid regions, *Stream measurements, *Bioaccumulation in fishes
Geographic Terms: Xi'an Shi (China), China
Abstract: Urban rivers in semiarid regions face intensified bisphenol A (BPA) contamination due to limited dilution capacity, extended low-flow periods, and pronounced seasonal hydrological variability. This study investigated BPA distribution and migration dynamics across water–sediment–fish compartments in Xi'an's river network (northwestern China) through spatial–temporal monitoring and multimedia coupling (MMC) modeling. BPA concentrations ranged 0.08–3.65 μg/L (water), 5.32–68.45 μg/kg (sediment), and 12.5–156.8 μg/kg (fish tissue), with wet season concentrations 115–166% higher than dry season values. Sediments exhibited 23–50-fold enrichment relative to overlying water, functioning as accumulation sinks during extended dry periods (October–May) and transforming into secondary pollution sources during wet seasons (June–September) through storm-driven resuspension, with annual water–sediment exchange flux estimated at 2.35 tons. MMC modeling revealed sediment–biota routes contributed 52–67% of total BPA accumulation in benthic omnivorous fish, challenging conventional aqueous-exposure assessment frameworks. Risk assessment identified elevated ecological risks in 12% of watershed area, with 36% of monitoring stations exceeding aquatic toxicity thresholds (PNEC: 1.5 μg/L). Principal component analysis demonstrated anthropogenic activity intensity (48.5% explained variance) and natural attenuation capacity (28.3% variance) as orthogonal regulatory axes. These findings highlight sediment-dominated migration, benthic food chain importance, and seasonal flux reversals as distinctive features of semiarid systems, informing integrated management for comparable water-limited urban watersheds globally. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
FullText Text:
  Availability: 0
Header DbId: enr
DbLabel: Energy & Power Source
An: 193884743
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
  Group: Ti
  Data: Multimedia migration and ecological risks of bisphenol A in semiarid urban rivers: a case study of Xi'an, China.
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  Data: <searchLink fieldCode="AR" term="%22Qu%2C+Yajie%22">Qu, Yajie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yjqu2000@163.com</i><br /><searchLink fieldCode="AR" term="%22Yang%2C+Tao%22">Yang, Tao</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> tyang@snnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Jiale%22">Zhang, Jiale</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> z1123793085@163.com</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Haiyan%22">Li, Haiyan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 1125906768@qq.com</i><br /><searchLink fieldCode="AR" term="%22Liao%2C+Yilin%22">Liao, Yilin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 1515626445@qq.com</i><br /><searchLink fieldCode="AR" term="%22Lei%2C+Xiangnan%22">Lei, Xiangnan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 18700392352@163.com</i><br /><searchLink fieldCode="AR" term="%22Yuan%2C+Jiaqi%22">Yuan, Jiaqi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 1615833350@qq.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Environmental+Monitoring+%26+Assessment%22">Environmental Monitoring & Assessment</searchLink>. May2026, Vol. 198 Issue 5, p1-19. 19p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Bisphenol+A%22">Bisphenol A</searchLink><br />*<searchLink fieldCode="DE" term="%22Contaminated+sediments%22">Contaminated sediments</searchLink><br />*<searchLink fieldCode="DE" term="%22Environmental+risk%22">Environmental risk</searchLink><br />*<searchLink fieldCode="DE" term="%22Arid+regions%22">Arid regions</searchLink><br />*<searchLink fieldCode="DE" term="%22Stream+measurements%22">Stream measurements</searchLink><br />*<searchLink fieldCode="DE" term="%22Bioaccumulation+in+fishes%22">Bioaccumulation in fishes</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
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  Data: <searchLink fieldCode="DE" term="%22Xi'an+Shi+%28China%29%22">Xi'an Shi (China)</searchLink><br /><searchLink fieldCode="DE" term="%22China%22">China</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Urban rivers in semiarid regions face intensified bisphenol A (BPA) contamination due to limited dilution capacity, extended low-flow periods, and pronounced seasonal hydrological variability. This study investigated BPA distribution and migration dynamics across water–sediment–fish compartments in Xi'an's river network (northwestern China) through spatial–temporal monitoring and multimedia coupling (MMC) modeling. BPA concentrations ranged 0.08–3.65 μg/L (water), 5.32–68.45 μg/kg (sediment), and 12.5–156.8 μg/kg (fish tissue), with wet season concentrations 115–166% higher than dry season values. Sediments exhibited 23–50-fold enrichment relative to overlying water, functioning as accumulation sinks during extended dry periods (October–May) and transforming into secondary pollution sources during wet seasons (June–September) through storm-driven resuspension, with annual water–sediment exchange flux estimated at 2.35 tons. MMC modeling revealed sediment–biota routes contributed 52–67% of total BPA accumulation in benthic omnivorous fish, challenging conventional aqueous-exposure assessment frameworks. Risk assessment identified elevated ecological risks in 12% of watershed area, with 36% of monitoring stations exceeding aquatic toxicity thresholds (PNEC: 1.5 μg/L). Principal component analysis demonstrated anthropogenic activity intensity (48.5% explained variance) and natural attenuation capacity (28.3% variance) as orthogonal regulatory axes. These findings highlight sediment-dominated migration, benthic food chain importance, and seasonal flux reversals as distinctive features of semiarid systems, informing integrated management for comparable water-limited urban watersheds globally. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s10661-026-15381-3
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 19
        StartPage: 1
    Subjects:
      – SubjectFull: Bisphenol A
        Type: general
      – SubjectFull: Contaminated sediments
        Type: general
      – SubjectFull: Environmental risk
        Type: general
      – SubjectFull: Arid regions
        Type: general
      – SubjectFull: Stream measurements
        Type: general
      – SubjectFull: Bioaccumulation in fishes
        Type: general
      – SubjectFull: Xi'an Shi (China)
        Type: general
      – SubjectFull: China
        Type: general
    Titles:
      – TitleFull: Multimedia migration and ecological risks of bisphenol A in semiarid urban rivers: a case study of Xi'an, China.
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            NameFull: Qu, Yajie
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            NameFull: Yang, Tao
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            NameFull: Zhang, Jiale
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            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 01676369
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              Value: 198
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              Value: 5
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            – TitleFull: Environmental Monitoring & Assessment
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