Impact of sampling techniques on the concentration of ammonia and sulfide in pore water of marine sediments Cover

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Impact of sampling techniques on the concentration of ammonia and sulfide in pore water of marine sediments

Oceanological and Hydrobiological Studies

Volume 48 (2019): Issue 2 (June 2019)

By: Aleksandra Brodecka-Goluch, Patrycja Siudek and Jerzy Bolałek

Open Access

|Jun 2019

Figures & Tables

Profiles of ammonia concentration obtained for three methods of pore water sampling (a – rhizon samplers; b– centrifugation of sediment subsamples collected using syringes; c– centrifugation of sediment sections pushed out of core liners). In the case of Method II, concentration values for cores 5 and 6 were interpolated, and in the case of Method III, concentrations for each sediment layer are given for a sediment depth from the middle of a layer.

Profiles of sulfide concentration obtained by three methods of pore water sampling (a – rhizon samplers; b – centrifugation of sediment subsamples collected using syringes; c – centrifugation of sediment sections pushed out of core liners). In the case of Method II, concentration values for cores 5 and 6 were interpolated, and in the case of Method III, concentrations for each sediment layer are given for a sediment depth from the middle of a layer.

Profiles of the average ammonium concentration for three methods of pore water sampling (Method I – rhizon samplers, Method II – centrifugation of sediment subsamples, Method III – centrifugation of sediment sections). In the case of Method III, concentrations were averaged to obtain values for depths of 5, 10, 15 cm etc.

Profiles of average sulfide concentration for three methods of pore water sampling (Method I – rhizon samplers, Method II – centrifugation of sediment subsamples, Method III – centrifugation of sediment sections). In the case of Method III, concentrations were averaged to obtain values for depths of 5, 10, 15 cm etc.

Summary of factors associated with the applied pore water extraction methods

Factor	Method I (rhizon samplers)	Method II (centrifugation of sediment subsamples collected using syringes)	Method III (centrifugation of sediment sections pushed out of a core liner)
centrifugation	–	+	+
contact with atmospheric air	–	+/–	+
core disturbance	–	–	+
filtration	+	–	–

General information on the sampling station

Station ID	EXP–1
Location	54°37'N;18°59'E
Water depth	85 m
Bottom water salinity	10.4 PSU
Bottom water temperature	5.9°C
Type of sediment	silt
C_org content in layer 0–1 cm	7–8 % wt. *

DOI: https://doi.org/10.1515/ohs-2019-0017 | Journal eISSN: 1897-3191 | Journal ISSN: 1730-413X

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Language: English

Page range: 184 - 195

Submitted on: May 25, 2018

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Accepted on: Nov 9, 2018

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Published on: Jun 3, 2019

Published by: University of Gdańsk

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

rhizon samplers,

sediment centrifugation,

Related subjects:

Chemistry, other,

Geosciences, other,

Life sciences, other

© 2019 Aleksandra Brodecka-Goluch, Patrycja Siudek, Jerzy Bolałek, published by University of Gdańsk
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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