A Simple in situ Extraction Method for Dissolved Sulfide in Sandy Mud Sediments Followed by Spectrophotometric Determination and Its Application to the Bottom Sediment at the Northeast of Ariake Bay

Sugahara, Shogo; Yurimoto, Tatsuya; Ayukawa, Kazuhiro; Kimoto, Katsunori; Senga, Yukiko; Okumura, Minoru; Seike, Yasushi

doi:10.2116/bunsekikagaku.59.1155

Cited by 9 publications

(7 citation statements)

References 9 publications

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“…All cores were sectioned into thicknesses of 1 or 2 cm. A pore water sample was extracted from each section based on the methods reported in Sugahara et al (2010). 2.5 mL of sediment from each section was placed into a 10 mL polyethylene syringe.…”

Section: Sampling Area and Pretreatment For Analysismentioning

confidence: 99%

Mechanism of silicate elution by hydrogen sulfide from bottom sediment in a brackish lake

et al. 2019

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Highly concentrated dissolved silicate was detected in pore water from anoxic-reducing sediment in Lake Nakaumi, a brackish lake. Silicate concentration also simultaneously increased with total hydrogen sulfide concentration during the summer. Generally, dissolved silicate is readily adsorbed onto ferric hydroxide and precipitates in an oxidative environment. In this study, we focused on the behavior of ferric hydroxide adsorbing silicate in sediment and determined that hydrogen sulfide was the main cause of dissolved silicate elution from ferric hydroxide adsorbing silicate because the hydrogen sulfide produced via microbiological processes in the anoxic-reducing environment was reducible for other metal oxides. According to laboratory experiments, silicate was released from ferric hydroxide by reacting with sodium sulfide, causing increasing elution of dissolved silicate from anoxic-reducing sediments with increasing concentration of sodium sulfide in the solutions. This result shows that hydrogen sulfide is very crucial for silicate release under a reducing environment. Therefore, in Lake Nakaumi, silicate would be released from the bottom after ferric hydroxide adsorbing silicate reacted with hydrogen sulfide in a summer reductive environment.

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Section: Sampling Area and Pretreatment For Analysismentioning

confidence: 99%

Mechanism of silicate elution by hydrogen sulfide from bottom sediment in a brackish lake

et al. 2019

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“…Colorimetric determination of dissolved sulfide, which was defined as the sum of H 2 S, HS -and S 2-, was accomplished according to the modified methods of Cline 1969(Sugahara et al 2010. The sulfide concentration measured using this method was referred to as Σ(H 2 S).…”

Section: Colorimetric Determination Of H 2 S In Interstitial Water Ofmentioning

confidence: 99%

High spatial resolution analysis of the distribution of sulfate reduction and sulfide oxidation in hypoxic sediment in a eutrophic estuary

Rathnayake

Sugahara

Maki

et al. 2016

Water Science and Technology

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Bottom hypoxia and consequential hydrogen sulfide (H 2 S) release from sediment in eutrophic estuaries is a major global environmental issue. We investigated dissolved oxygen, pH and H 2 S concentration profiles with microsensors and by sectioning sediment 2 cores followed by colorimetric analysis. The results of these analyses were then compared with the physicochemical properties of the bottom water and sediment samples to determine their relationships with H 2 S production in sediment. High organic matter and fine particle composition of the sediment reduced the oxidation-reduction potential, stimulating H 2 S production. Use of a microsensor enabled measurement of H 2 S concentration profiles with submillimeter resolution, whereas the conventional sediment-sectioning method gave H 2 S measurements with a spatial resolution of 10 mm. Furthermore, microsensor measurements revealed H 2 S consumption occurring at the sediment surface in both the microbial mat and the sediment anoxic layer that were not observed with sectioning. This H 2 S consumption prevented H 2 S release into the overlying water. However, the microsensor measurements had the potential to underestimate H 2 S concentrations. We propose that a combination of several techniques to measure microbial activity and determine its relationships with physicochemical properties of the sediment is essential to understanding the sulfur cycle under hypoxic conditions in eutrophic sediments.

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“…We have developed simple and/or sensitive methods for the determination of chemical species, such as dissolved sulfide, [1][2][3] phosphate, 4,5 ammonia, 6,7 nitrite, 8 and hydrazine 9 in environmental water. Dissolved sulfide in environmental water is produced from microbial sulfate reduction.…”

Section: Introductionmentioning

confidence: 99%

Sensitive Method for the Oxidation-determination of Trace Hydroxylamine in Environmental Water Using Hypochlorite Followed by Gas Chromatography

et al. 2017

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A Simple in situ Extraction Method for Dissolved Sulfide in Sandy Mud Sediments Followed by Spectrophotometric Determination and Its Application to the Bottom Sediment at the Northeast of Ariake Bay

Cited by 9 publications

References 9 publications

Mechanism of silicate elution by hydrogen sulfide from bottom sediment in a brackish lake

Mechanism of silicate elution by hydrogen sulfide from bottom sediment in a brackish lake

High spatial resolution analysis of the distribution of sulfate reduction and sulfide oxidation in hypoxic sediment in a eutrophic estuary

Sensitive Method for the Oxidation-determination of Trace Hydroxylamine in Environmental Water Using Hypochlorite Followed by Gas Chromatography

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