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Martinez, Andres; Awad, Andrew M; Herkert, Nicholas J; Hornbuckle, Keri C (2018): PCB congener data of gas-phase, freely-dissolved water, air-water fugacity ratios and air-water fluxes in Indiana Harbor and Ship Canal, IN, USA. PANGAEA, https://doi.org/10.1594/PANGAEA.894908, Supplement to: Martinez, A et al. (2019): Determination of PCB fluxes from Indiana Harbor and Ship Canal using dual-deployed air and water passive samplers. Environmental Pollution, 244, 469-476, https://doi.org/10.1016/j.envpol.2018.10.048

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Abstract:
We have developed a method for measuring fluxes of PCBs from natural waters using air and water passive samplers deployed simultaneously in the Indiana Harbor and Ship Canal (IHSC). Net volatilization of ƩPCBs was determined for 2017, and ranged from 1.4 to 2.8 μg m−2 d−1, with a median of 2.0 μg m−2 d−1. We confirm earlier findings that the IHSC experiences constant release of gas-phase PCBs. Gas-phase and freely-dissolved water ƩPCB samples median were 4.0 ng m−3 and 14 ng L−1, both exhibiting increasing concentrations over the year of study, and with a strong positive correlation between them (R2 = 0.93 for ƩPCBs). The relative concentrations of individual PCB congeners were very similar between air and water samples, and resemble Aroclor 1248, a mixture previously reported to contaminate the IHSC sediments. Monthly variability of the volatilization fluxes was primarily driven by the freely-dissolved water concentration changes (R2 = 0.87). Although different sampling methods were performed to estimate air-water fluxes between the month of August of 2006 and 2017, ƩPCB net fluxes have decreased by more than 60%, suggesting that either dredging at IHSC from 2012 to 2017 or reduction of upstream sources have decreased the freely-dissolved water concentrations of PCBs, thus reducing the air-water net volatilization in IHSC. Finally, we have shown that this passive sampling approach represents a simple and cost-effective method to assess the air-water exchange of PCBs, increase analytical sensitivity, enable measurements over time, and reduce uncertainties related to unexpected episodic events.
Coverage:
Latitude: 41.648780 * Longitude: -87.468400
Size:
15 datasets

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Datasets listed in this publication series

  1. Martinez, A; Awad, AM; Herkert, NJ et al. (2018): Effective volume of polychlorinated biphenyl congeners obtained using passive samplers in IHSC. https://doi.org/10.1594/PANGAEA.894962
  2. Martinez, A; Awad, AM; Herkert, NJ et al. (2018): Fraction of equilibrium for individual PCB congener between LDPE and water. https://doi.org/10.1594/PANGAEA.894959
  3. Martinez, A; Awad, AM; Herkert, NJ et al. (2018): Individual PCB congener LDPE-water partition coefficient. https://doi.org/10.1594/PANGAEA.894960
  4. Martinez, A; Awad, AM; Herkert, NJ et al. (2018): Limits of quantification for individual PCB congeners obtained from 6 blank LDPEs analyzed as samples. https://doi.org/10.1594/PANGAEA.894907
  5. Martinez, A; Awad, AM; Herkert, NJ et al. (2018): Limits of quantification for individual PCB congeners obtained from 9 blank PUFs analyzed as samples. https://doi.org/10.1594/PANGAEA.894915
  6. Martinez, A; Awad, AM; Herkert, NJ et al. (2018): PCB fugacity water-air ratio obtained using passive samplers in IHSC. https://doi.org/10.1594/PANGAEA.894904
  7. Martinez, A; Awad, AM; Herkert, NJ et al. (2018): PCB-Kow and PCB-DUow at the IHSC, link to files. https://doi.org/10.1594/PANGAEA.894917
  8. Martinez, A; Awad, AM; Herkert, NJ et al. (2018): Polychlorinated biphenyl air-water absorption flux obtained using passive samplers in IHSC. https://doi.org/10.1594/PANGAEA.894901
  9. Martinez, A; Awad, AM; Herkert, NJ et al. (2018): Polychlorinated biphenyl air-water net flux obtained using passive samplers in IHSC. https://doi.org/10.1594/PANGAEA.894902
  10. Martinez, A; Awad, AM; Herkert, NJ et al. (2018): Polychlorinated biphenyl air-water volatilization flux obtained using passive samplers in IHSC. https://doi.org/10.1594/PANGAEA.894903
  11. Martinez, A; Awad, AM; Herkert, NJ et al. (2018): Polychlorinated biphenyl concentration in air obtained using passive samplers in IHSC. https://doi.org/10.1594/PANGAEA.894905
  12. Martinez, A; Awad, AM; Herkert, NJ et al. (2018): Polychlorinated biphenyl concentration in water obtained using passive samplers in IHSC. https://doi.org/10.1594/PANGAEA.894906
  13. Martinez, A; Awad, AM; Herkert, NJ et al. (2018): Polychlorinated biphenyl mass in low density polyethylene obtained using passive samplers in IHSC. https://doi.org/10.1594/PANGAEA.894920
  14. Martinez, A; Awad, AM; Herkert, NJ et al. (2018): Polychlorinated biphenyl mass in polyurethane foam obtained using passive samplers in IHSC. https://doi.org/10.1594/PANGAEA.894961
  15. Martinez, A; Awad, AM; Herkert, NJ et al. (2018): Water temperature and meteorological observations at the Indiana Harbor and Ship Canal. https://doi.org/10.1594/PANGAEA.894919