DETERMINATION OF PHOSPHOROUS IN FIFTY-NINE GEOCHEMICAL REFERENCE SAMPLES BY EXTRACTIVE SPECTROPHOTOMETRY |
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| Authors: | Partha CHATTOPADHYAY |
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| Affiliation: | Regional Research Laboratory, Council of Scientific and Industrial Research, Bhubaneswar-751 013, India |
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| Abstract: | A digestion procedure with sequential use of HF-HCl and HNO3-HClO4 involving yellow vanadium molybdophosphate complex and its extraction into isobutylmethylketone (IBMK) has been employed for estimation of phosphorus in 59 geochemical reference samples. The agreement between the results obtained from IBMK-extraction and the recommended values has been found to be better than those available from the usual procedures (i.e., estimation in the aqueous phase). |
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