NDLI: Identification of pyrite using $^{57}$Fe Mössbauer spectroscopy in core sediments from Erhai Lake, SW China combined with a series of acidic pre-treatments

Content Provider	Springer Nature Link
Author	Zheng, G. Suzuki, K. Takahashi, Y. Shimizu, H. Ku, A. Matsuo, M.
Copyright Year	2006
Abstract	A method has been developed for analyzing pyrite quantitatively in the sediments of Erhai Lake in southwest China using $^{57}$Fe Mössbauer spectroscopy combined with a series of acidic pre-treatments. Following a washing with an alkaline solution (0.1N NaOH), the sediment samples were successively treated using HCl, HF, and then HCl (65 °C). The residues thus prepared were analyzed for pyrite using $^{57}$Fe Mössbauer spectrometry. The presence of pyrite was also confirmed in the acidic residues of the sediments using sulfur K-edge X-ray absorption near edge structure. This method can be used to measure pyrite in aquatic sediments, especially when the concentration of pyrite is very low and the particles of pyrite are small or the crystallinity is low, and even in amorphous status. In addition, vertical variations of pyrite contents are positively correlated with organic matter and negatively correlated with hematite, superfine paramagnetic ferric iron and sedimentation rate in the cored sediment from the Erhai Lake. All these geochemical indicators may also reflect environmental changes in sedimentation conditions and diagenesis.
Starting Page	43
Ending Page	50
Page Count	8
File Format	PDF
ISSN	02365731
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume Number	269
Issue Number	1
e-ISSN	15882780
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Inorganic Chemistry Physical Chemistry Diagnostic Radiology Nuclear Physics, Heavy Ions, Hadrons Nuclear Chemistry
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Pollution Health, Toxicology and Mutagenesis Radiology, Nuclear Medicine and Imaging Analytical Chemistry Public Health, Environmental and Occupational Health Nuclear Energy and Engineering

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