Sorption and Desorption Behavior of Organotin Compounds in Sediment−Pore Water Systems

2001 ◽  
Vol 35 (15) ◽  
pp. 3151-3157 ◽  
Author(s):  
Michael Berg ◽  
Cédric G. Arnold ◽  
Stephan R. Müller ◽  
Jürg Mühlemann ◽  
René P. Schwarzenbach
Keyword(s):  
Pore Water ◽  
Water Systems ◽  
Organotin Compounds ◽  
Sediment Pore Water

Equilibrium passive sampling as a tool to study polycyclic aromatic hydrocarbons in Baltic Sea sediment pore-water systems

2015 ◽  
Vol 101 (1) ◽  
pp. 296-303 ◽  
Author(s):  
Susann-Cathrin Lang ◽  
Andrew Hursthouse ◽  
Philipp Mayer ◽  
Danjiela Kötke ◽  
Ines Hand ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Baltic Sea ◽  
Pore Water ◽  
Aromatic Hydrocarbons ◽  
Passive Sampling ◽  
Water Systems ◽  
Sediment Pore Water ◽  
Polycyclic Aromatic

Internal Metal Distribution in Sediment - Pore Water - Water Systems of Bights at Nasser Lake, Egypt

2011 ◽  
Vol 33 (2) ◽  
pp. 133-168
Author(s):  
M. E. Soltan ◽  
S. M. N. Moalla ◽  
M. N. Rashed ◽  
E. M. Fawzy
Keyword(s):  
Pore Water ◽  
Water Systems ◽  
Metal Distribution ◽  
Sediment Pore Water ◽  
Nasser Lake

scholarly journals Geochemical characteristics of sediment-pore water systems associated with hydrothermal activity at South Okinawa Trough

2021 ◽  
Author(s):  
Feng-Hsin Hsu ◽  
Chih-Chieh Su ◽  
Hsiao-Fen Lee ◽  
Yu-Shih Lin ◽  
Chung Wu ◽  
...  
Keyword(s):  
Pore Water ◽  
Okinawa Trough ◽  
Hydrothermal Activity ◽  
Water Systems ◽  
Geochemical Characteristics ◽  
Sediment Pore Water

scholarly journals Development and evaluation of a new diffusive gradients in thin-films technique for measuring organotin compounds in coastal sediment pore water

Talanta ◽  
2018 ◽  
Vol 178 ◽  
pp. 670-678 ◽  
Author(s):  
Russell F. Cole ◽  
Graham A. Mills ◽  
Michelle S. Hale ◽  
Ruth Parker ◽  
Thi Bolam ◽  
...  
Keyword(s):  
Thin Films ◽  
Pore Water ◽  
Organotin Compounds ◽  
Coastal Sediment ◽  
Sediment Pore Water ◽  
Diffusive Gradients

scholarly journals Phosphorous Supply to a Eutrophic Artificial Lake: Sedimentary versus Groundwater Sources

Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 563
Author(s):  
Wiebe Förster ◽  
Jan C. Scholten ◽  
Michael Schubert ◽  
Kay Knoeller ◽  
Nikolaus Classen ◽  
...  
Keyword(s):  
Water Quality ◽  
Stable Isotope ◽  
Pore Water ◽  
Lake Water ◽  
Sediment Cores ◽  
Eutrophic Lake ◽  
Stable Water Isotopes ◽  
Artificial Lake ◽  
Sediment Pore Water ◽  
Mass Balance Models

The eutrophic Lake Eichbaumsee, a ~1 km long and 280 m wide (maximum water depth 16 m) dredging lake southeast of Hamburg (Germany), has been treated for water quality improvements using various techniques (i.e., aeration plants, removal of dissolved phosphorous by aluminum phosphorous precipitation, and by Bentophos® (Phoslock Environmental Technologies, Sydney, Australia), adsorption) during the past ~15 years. Despite these treatments, no long-term improvement of the water quality has been observed and the lake water phosphorous content has continued to increase by e.g., ~670 kg phosphorous between autumn 2014 and autumn 2019. As no creeks or rivers drain into the lake and hydrological groundwater models do not suggest any major groundwater discharge into the lake, sources of phosphorous (and other nutrients) are unknown. We investigated the phosphorous fluxes from sediment pore water and from groundwater in the water body of the lake. Sediment pore water was extracted from sediment cores recovered by divers in August 2018 and February 2019. Diffusive phosphorous fluxes from pore water were calculated based on phosphorus gradients. Stable water isotopes (δ2H, δ18O) were measured in the lake water, in interstitial waters in the banks surrounding the lake, in the Elbe River, and in three groundwater wells close to the lake. Stable isotope (δ2H, δ18O) water mass balance models were used to compute water inflow/outflow to/from the lake. Our results revealed pore-water borne phosphorous fluxes between 0.2 mg/m2/d and 1.9 mg/m2/d. Assuming that the measured phosphorous fluxes are temporarily and spatially representative for the whole lake, about 11 kg/a to 110 kg/a of phosphorous is released from sediments. This amount is lower than the observed lake water phosphorous increase of ~344 kg between April 2018 and November 2018. Water stable isotope (δ2H, δ18O) compositions indicate a water exchange between an aquifer and the lake water. Based on stable isotope mass balances we estimated an inflow of phosphorous from the aquifer to the lake of between ~150 kg/a and ~390 kg/a. This result suggests that groundwater-borne phosphorous is a significant phosphorous source for the Eichbaumsee and highlights the importance of groundwater for lake water phosphorous balances.

scholarly journals Spectral Characterization of Dissolved Organic Matter in Seawater and Sediment Pore Water from the Arctic Fjords (West Svalbard) in Summer

Water ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 202
Author(s):  
Meilian Chen ◽  
Ji-Hoon Kim ◽  
Sungwook Hong ◽  
Yun Kyung Lee ◽  
Moo Hee Kang ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Pore Water ◽  
Phytoplankton Bloom ◽  
Ocean Surface ◽  
The Arctic ◽  
Sediment Pore Water ◽  
Ice Edge ◽  
Accumulation Trend ◽  
Arctic Fjords

Fjords in the high Arctic, as aquatic critical zones at the interface of land-ocean continuum, are undergoing rapid changes due to glacier retreat and climate warming. Yet, little is known about the biogeochemical processes in the Arctic fjords. We measured the nutrients and the optical properties of dissolved organic matter (DOM) in both seawater and sediment pore water, along with the remote sensing data of the ocean surface, from three West Svalbard fjords. A cross-fjord comparison of fluorescence fingerprints together with downcore trends of salinity, Cl−, and PO43− revealed higher impact of terrestrial inputs (fluorescence index: ~1.2–1.5 in seawaters) and glaciofluvial runoffs (salinity: ~31.4 ± 2.4 psu in pore waters) to the southern fjord of Hornsund as compared to the northern fjords of Isfjorden and Van Mijenfjorden, tallying with heavier annual runoff to the southern fjord of Hornsund. Extremely high levels of protein-like fluorescence (up to ~4.5 RU) were observed at the partially sea ice-covered fjords in summer, in line with near-ubiquity ice-edge blooms observed in the Arctic. The results reflect an ongoing or post-phytoplankton bloom, which is also supported by the higher levels of chlorophyll a fluorescence at the ocean surface, the very high apparent oxygen utilization through the water column, and the nutrient drawdown at the ocean surface. Meanwhile, a characteristic elongated fluorescence fingerprint was observed in the fjords, presumably produced by ice-edge blooms in the Arctic ecosystems. Furthermore, alkalinity and the humic-like peaks showed a general downcore accumulation trend, which implies the production of humic-like DOM via a biological pathway also in the glaciomarine sediments from the Arctic fjords.

scholarly journals Noble gases in sediment pore water yield insights into hydrothermal fluid transport in the northern Guaymas Basin

2021 ◽  
Vol 434 ◽  
pp. 106419
Author(s):  
E. Horstmann ◽  
Y. Tomonaga ◽  
M.S. Brennwald ◽  
M. Schmidt ◽  
V. Liebetrau ◽  
...  
Keyword(s):  
Pore Water ◽  
Hydrothermal Fluid ◽  
Fluid Transport ◽  
Noble Gases ◽  
Water Yield ◽  
Sediment Pore Water ◽  
Guaymas Basin

The marine geochemistry of actinium-227: Evidence for its migration through sediment pore water

1990 ◽  
Vol 17 (11) ◽  
pp. 1933-1936 ◽  
Author(s):  
Yoshiyuki Nozaki ◽  
Masatoshi Yamada ◽  
Hirofumi Nikaido
Keyword(s):  
Pore Water ◽  
Sediment Pore Water ◽  
Marine Geochemistry
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