Improvement of the wet-oxidation procedure for simultaneous determination of particulate organic nitrogen and phosphorus collected on filters
نویسندگان
چکیده
A new digestion technique is presented for simultaneous analysis of particulate organic nitrogen (PON) and particulate organic phosphorus (POP) collected on filters. This method is based on a standard persulfate digestion procedure at 120°C and adapted from a former method for the simultaneous determinat~on of total nitrogen and total phosphorus in natural waters. Comparisons 1~1th usual methods using separate determinations for PON and POP indicate a high efficiency of the procedure for cell cultures or natural seawater samples. N~t ra t e and phosphate formed by oxidation can be analysed s~multaneously on an automated system. The procedure is highly suitable for routlne analysis and especially appropriate for shipboard use.
منابع مشابه
Simultaneous determination of particulate organic carbon, nitrogen and phosphorus collected on filters, using a semi- automatic wet-oxidation method
A wet-oxidation method is presented for determining simultaneously particulate organic carbon (POC), particulate organic nitrogen (PON) and particulate organic phosphorus (POP) collected on filters. Conversion of POC, PON and POP to inorganic products, carbon dioxide, nitrate+nitrite and soluble reactive phosphate respectively, is performed by a persulfate wet-oxidation in slight alkaline condi...
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