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Geochemical Sediment Analysis Procedures, Open-File Report 02-371

HYDROCHLORIC ACID STEP


HYDROCHLORIC ACID STEP
Materials Required: Hydrochloric acid preparation materials
Add 5mL of HCl to each Teflon tube using 10mL pipet. Pipetting into tube

Loosely cap tube and swirl by hand.

*Cap loosely to allow organic vapors to escape during the treatment process.

 Swirling sample in tube

Let sit 1-3 hours until reaction is completed.

*This allows time for the reaction to go to completion.
The HCl reacts with the sediment and removes the carbonates.

*Refer to JHA before starting each process for further personal protection and potential hazards.

Proceed to centrifuge step.

 Hydrochloric reacting with sediment

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U.S. Department of the Interior, U.S. Geological Survey
URL: http://pubs.usgs.gov/of/2002/of02-371/METHODS/hclstep.htm
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Last modified: 13:21:36 Tue 19 Nov 2002
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