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Ajhil: Created page with "NOTOC {{OR/14/067}} The final step is to clean the silver phosphate crystals with hydrogen peroxide to remove any residual organic material. 0.5 ml of 15% hydrogen p..."

2016-02-12T16:21:29Z

Created page with "__NOTOC__ {{OR/14/067}} The final step is to clean the silver phosphate crystals with hydrogen peroxide to remove any residual organic material. 0.5 ml of 15% hydrogen p..."

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{{OR/14/067}}
The final step is to clean the silver phosphate crystals with hydrogen peroxide to remove any residual organic material.

0.5 ml of 15% hydrogen peroxide solution was added slowly (so as to avoid excessive bubbling) to all sample vials. The sample vials were then placed back in the oven at 50°C and left until all the hydrogen peroxide had evaporated. This step usually visibly improves the colour of the crystals, bleaching them from a dark brown to a lighter shade.

After the cleaning procedure, the vials are reweighed and a final sample weight determined. This sample weight was used to calculate the phosphate yield from the original sample.
[[category:OR/14/067 Method for analysing phosphate 18O/16O ratios for waters with high C:P ratios| 14]]

OR/14/067 Hydrogen peroxide ‘polishing’ - Revision history

Dbk: Protected "OR/14/067 Hydrogen peroxide ‘polishing’" ([Edit=Allow only administrators] (indefinite) [Move=Allow only administrators] (indefinite)) [cascading]

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Ajhil: Created page with "__NOTOC__ {{OR/14/067}} The final step is to clean the silver phosphate crystals with hydrogen peroxide to remove any residual organic material. 0.5 ml of 15% hydrogen p..."

Ajhil: Created page with "NOTOC {{OR/14/067}} The final step is to clean the silver phosphate crystals with hydrogen peroxide to remove any residual organic material. 0.5 ml of 15% hydrogen p..."