Menetelmä fosfonaattien määrittämiseksi

摘要

The present invention related to a method for quantifying phosphonates with low detection limit by admixing a sample including phosphonates with lanthanide(III) ions in a buffer solution, wherein the buffer solution includes a buffering agent which has pKa value from 6 to 10. The buffering agent does not include morethan one COOH groups but it includes one or more OH groups.