OR/14/067 Cerium phosphate precipitation - Revision history

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Ajhil at 08:03, 15 February 2016

2016-02-15T08:03:52Z

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{{OR/14/067}}
To each sample was added:

* 20 ml ultrapure water
* 4 ml 10% acetic acid
* 2 ml 1 M HNO<sub>3</sub>
* 2 ml 0.5 M potassium acetate solution

The sample was then shaken, to fully dissolve the gel. The pH should be approximately 5.0 to 5.5 when fully dissolved, but KOH was added to adjust the pH if necessary.

* Add 800 mg cerium nitrate in 5 ml ultrapure water

The sample should go cloudy and must then be left at least overnight.
[[category:OR/14/067 Method for analysing phosphate 18O/16O ratios for waters with high C:P ratios| 09]]