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1998
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December
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In the Laboratory
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Sulfides in the Anaerobic Environment: The Determination of Hydrogen Sulfide and Acid-Soluble Metallic Sulfides in Sea-Floor Sediment
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Joan Kai Christensen, Boy Høyer, Lars Kryger, and Niels Pind
Department of Chemistry, Aarhus University, Langelandsgade 140, DK-800 Århus C, Denmark
Lee Sing Kong
National Institute of Education, Nanyang Technological University, 469 Bukit Timah Road, Singapore 1025
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December 1998
Vol. 75 No. 12
p. 1605
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| Abstract |
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A procedure for the determination of hydrogen sulfide and acid-soluble metallic sulfides in sea floor sediment has been developed and tested as part of a laboratory course in analytical and environmental chemistry. The procedure includes (i) anaerobic sampling of sediment, (ii) a volatilization method, which discriminates between hydrogen sulfide and acid-soluble metallic sulfides in the sediment, and (iii) a quantitative determination of these sulfide components using an ion-selective electrode approach. The paper describes all experimental details and gives a brief summary of sulfide generation processes in sea-floor sediments, underlining the importance of sulfides in anaerobic environments. Representative results obtained during the laboratory course are discussed.
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| More Information |
 Citation |
Christensen, Joan Kai; Høyer, Boy; Kryger, Lars; Pind, Niels; Kong, Lee Sing. J. Chem. Educ. 1998 75 1605.
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Keywords |
Environmental Chemistry; Electrochemistry; Laboratory Instruction
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History |
Created:
Last Updated: |
June 18, 1999
June 24, 2005
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| Home > JCE Print > Journal of Chemical Education > Issues >
1998
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December
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