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Those of you who seem to be able to tap or dig your copper out...how are you packing it in the first place? That is, are you simply dumping it in and maybe tapping with your finger or are you using a vortex to really get the copper well seated?

andy

On Fri, Jan 15, 2016 at 7:40 AM, Mihai Lefticariu <[log in to unmask]> wrote:
Darren,

You wait for the column to cool down, remove the quartz wool plugs, and start tapping the column gently on the side and top with a wood or better a soft rubber mallet. Flip it upside down and do the same. Repeat the process until the oxidized copper granules will start detaching nicely from the walls and the long oxidized plug breaks apart into smaller fragments. Keep tapping until the fragments get out of the quartz tube. I would not pull/drag the oxidized copper plug fragments inside the tube to avoid scratches. When the tube is empty wash it thoroughly with warm soapy water using a thick test tube brush. Rinse it thoroughly with trap water. Give it a final rinse with alcohol and DI water and leave to dry.  Cheers. Mihai

Dr. Mihai Lefticariu
IRMS Scientist
Mass Spectrometry Facility
Neckers 103
Southern Illinois University Carbondale
Carbondale IL 62901

________________________________________
From: Stable Isotope Geochemistry <[log in to unmask]> on behalf of GROCKE D.R. <[log in to unmask]>
Sent: Friday, January 15, 2016 6:12 AM
To: [log in to unmask]
Subject: [ISOGEOCHEM] Removing reduced copper

just a quick question in the hope of saving costs:

does anyone know an easy way to remove the oxidised copper from the quartz column; so that the quartz column can be re-used?

cheers
darren



--
Andrew Schauer
206.543.6327
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http://isolab.ess.washington.edu/