| Title |
Method for analysing phosphate 18O/16O ratios for waters with high C:P ratios : British Geological Survey report OR/14/067 |
| Ref no |
OR/14/067 |
| Author |
Lapworth, D.J.; Surridge, B.; Williams, P.J.; Heaton, T.H.E.; Gooddy, D.C. |
| Year of publication |
2014 |
| Abstract |
In this report we outline a method to isolate phosphate as pure Ag3PO4 for waters with high C:P ratios for ï¤18O analysis. This report details a method that can be used to minimise residual organic contamination of the final Ag3PO4, therefore significantly reducing uncertainties in the final interpretation of ï¤18O results. This includes the use of column resins in series to (i) remove the majority of dissolved organic carbon and (ii) isolate/pre-concentrate PO4. This is followed by the use of a modified McLaughlin et al (2004) method for PO4 precipitation, with an additional final hydrogen peroxide clean-up step to remove residual organic matter following precipitation of Ag3PO4. The reagents required for this method are first listed, and then a step-by-step account of the process is outlined. Importantly, it contains adequate detail to be used by other researchers in this field or modified to suit their particular research objectives. |
| Publisher |
British Geological Survey |
| Place of publication |
Nottingham, UK |
| Series |
Open Reports |
| View publication |
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