季節性硫酸鹽還原與硫化礦物物種之變化(Ⅱ)
Date Issued
2002
Date
2002
Author(s)
DOI
902611M002008
Abstract
This research studied sulfate reduction and pyrite formation in the iron limited
brackish sedimentary environment. Sulfate reduction rate, sulfate, chloride, organic
and inorganic carbon concentrations were analyzed for sediments collected from
Da-Pang Bay.
The result showed that Da-Pang Bay sediment is characterized by high organic
carbon, AVS and pyrite concentrations. Higher concentrations of AVS and organic
carbon were mostly observed in sediments away from the bay opening whereas higher
pyrite concentrations were observed in sediments mostly around the higher
concentrations of AVS. High concentrations of chloride indicate the environment is
mostly marine and abundant sulfate indicate that sulfate is unlikely a limiting factor
for the pyrite formation. The C/S ratio, however, resembles that of the freshwater
depositional environment. The discrepancy was primarily a result of iron limitation.
Subjects
sulfate reduction
pyrite
sulfide
anoxic sediments
SDGs
Publisher
臺北市：國立臺灣大學海洋研究所
Type
report
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