PreprintArticleVersion 1Preserved in Portico This version is not peer-reviewed
Spatial-Temporal Distribution Characteristics and Interrelationship of Sulfur and Iron Compounds in Sediments: A Model Study in the Closed-Section of Mikawa Bay, Japan
Version 1
: Received: 24 March 2023 / Approved: 30 March 2023 / Online: 30 March 2023 (02:58:33 CEST)
How to cite:
Waku, M.; Sone, R.; Inoue, T.; Ishida, T.; Suzuki, T. Spatial-Temporal Distribution Characteristics and Interrelationship of Sulfur and Iron Compounds in Sediments: A Model Study in the Closed-Section of Mikawa Bay, Japan. Preprints2023, 2023030519. https://doi.org/10.20944/preprints202303.0519.v1
Waku, M.; Sone, R.; Inoue, T.; Ishida, T.; Suzuki, T. Spatial-Temporal Distribution Characteristics and Interrelationship of Sulfur and Iron Compounds in Sediments: A Model Study in the Closed-Section of Mikawa Bay, Japan. Preprints 2023, 2023030519. https://doi.org/10.20944/preprints202303.0519.v1
Waku, M.; Sone, R.; Inoue, T.; Ishida, T.; Suzuki, T. Spatial-Temporal Distribution Characteristics and Interrelationship of Sulfur and Iron Compounds in Sediments: A Model Study in the Closed-Section of Mikawa Bay, Japan. Preprints2023, 2023030519. https://doi.org/10.20944/preprints202303.0519.v1
APA Style
Waku, M., Sone, R., Inoue, T., Ishida, T., & Suzuki, T. (2023). Spatial-Temporal Distribution Characteristics and Interrelationship of Sulfur and Iron Compounds in Sediments: A Model Study in the Closed-Section of Mikawa Bay, Japan. Preprints. https://doi.org/10.20944/preprints202303.0519.v1
Chicago/Turabian Style
Waku, M., Toshiro Ishida and Teruaki Suzuki. 2023 "Spatial-Temporal Distribution Characteristics and Interrelationship of Sulfur and Iron Compounds in Sediments: A Model Study in the Closed-Section of Mikawa Bay, Japan" Preprints. https://doi.org/10.20944/preprints202303.0519.v1
Abstract
This study examined the spatial-temporal distribution of sulfur and iron compounds (dissolved sulfide, iron sulfide, and ionized iron) in sediments from April 2015 to March 2016 at four stations in Mikawa Bay, Japan. Seasonal changes were observed in dissolved sulfide, iron sulfide, and ionized iron in the upper part of the sediment (0–4 cm depth) at all stations. The maximum concentration in the upper part of the central bay was 2.8 mmol L-1. The maximum values of dissolved sulfide (ranging from 1.4 to 8.1 mmol L-1) at stations located in a water way varied among stations. The iron sulfide concentration in the upper part of the sediment at a station where dissolved sulfide concentration in the waterway was relatively low exceeded that at other stations in the waterway during spring to summer. Ionized iron concentration was highest at the station where the dissolved sulfide concentration was low. The study results suggest that iron plays an important role in determining the magnitude of dissolved sulfide accumulation in sediments by binding with dissolved sulfide. The results imply the possibility of mitigating the accumulation of free sulfides, which causes extreme hypoxia, by artificially adding sufficient iron to the seabed.
Keywords
dissolved sulfide; iron; hypoxia; buffering capacity; environmental restoration; coastal waters; Mikawa Bay; dead zone
Subject
Environmental and Earth Sciences, Water Science and Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
