Abstract D R A W I N G 1. A PROCESS FOR OBTAINING A REPRESENTATION OF THE TOTAL PHOSPHATE CONTENT OF A SAMPLE CONTAINING PHOSPHATE AND AT LEAST ONE OTHER ANION, COMPRISING: (1) HYDROLYZING THE SAMPLE WITH A DILUTE ACID OF SUFFICIENT STRENGTH AND IN SUFFICIENT QUANTITY TO CONVERT SUBSTANTIALLY ALL OF THE PHOSPHATES TO THE ORTHOPHOSPHATE FORM; (2) SEPARATING THE PHOSPHATE IONS FROM OTHER ANIONS BY ION-EXCHANGE CHHROMATOGRAPHY, WHEREBY AN ELUTED STREAM CONTAINING A CHROMATOGRAPHIC DISTRIBUTION OF THE DIFFERENT ANIONS IS OBTAINED; (3) OBTAINING AN INDICATION OF THE REFRACTIVE INDEX OF THE PHOSPHATE-CONTAINING PORTION OF SAID ELUTED D STREAM; AND (4) CONVERTING SAID INDICATION TO A REPRESENTATION OF THE PHOSPHATE CONTENT.
A PROCESS FOR OBTAINING A REPRESENTATION OF THE TOTAL PHOSPHATE CONTENT OF A SAMPLE CONTAINING PHOSPHATE AND AT LEAST ONE OTHER ANION, COMPRISING: (1) HYDROLYZING THE SAMPLE WITH A DILUTE ACID OF SUFFICIENT STRENGTH AND IN SUFFICIENT QUANTITY TO CONVERT SUBSTANTIALLY ALL OF THE PHOSPHATES TO THE ORTHOPHOSPHATE FORM; (2) SEPARATING THE PHOSPHATE IONS FROM OTHER ANIONS BY ION-EXCHANGE CHHROMATOGRAPHY, WHEREBY AN ELUTED STREAM CONTAINING A CHROMATOGRAPHIC DISTRIBUTION OF THE DIFFERENT ANIONS IS OBTAINED; (3) OBTAINING AN INDICATION OF THE REFRACTIVE INDEX OF THE PHOSPHATE-CONTAINING PORTION OF SAID ELUTED D STREAM; AND (4) CONVERTING SAID INDICATION TO A REPRESENTATION OF THE PHOSPHATE CONTENT.
Claim 2
Dependent Claim
103 words
A PROCESS FOR OBTAINING A REPRESENTATION OF THE TOTAL PHOSPHATE CONTENT OF A SAMPLE CONTAINING PHOSPHATE AND AT LEAST ONE OTHER ANION, COMPRISING: (1) HYDROLYZING THE SAMPLE WITH A DILUTE ACID OF SUFFICIENT STRENGTH AND IN SUFFICIENT QUANTITY TO CONVERT SUBSTANTIALLY ALL OF THE PHOSPHATES TO THE ORTHOPHOSPHATE FORM; (2) SEPARATING THE PHOSPHATE IONS FROM OTHER ANIONS BY ION-EXCHANGE CHHROMATOGRAPHY, WHEREBY AN ELUTED STREAM CONTAINING A CHROMATOGRAPHIC DISTRIBUTION OF THE DIFFERENT ANIONS IS OBTAINED; (3) OBTAINING AN INDICATION OF THE REFRACTIVE INDEX OF THE PHOSPHATE-CONTAINING PORTION OF SAID ELUTED D STREAM; AND (4) CONVERTING SAID INDICATION TO A REPRESENTATION OF THE PHOSPHATE CONTENT.