Extraction of phosphonates
AssigneeMDS (Canada) Inc.
InventorsIrene Idziak, Amina Benrebouh
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Abstract
Glyphosate and other phosphonates including the bone resorption-inhibiting bisphosphonates are extracted from samples using immobilized forms of zinc, including zinc methacrylate polymers. The method provides a simple and sensitive method for detecting phosphonates present in aqueous samples, including wastewater and urine.
Claims13
A method for extracting phosphonate from an aqueous sample, comprising the step of bringing said sample into contact with a polymeric zinc carboxylate under conditions permitting binding between said phosphonate and said zinc.
A method for detecting phosphonate in an aqueous sample, comprising the steps of:
- (1) bringing said sample into contact with a polymeric zinc methacrylate to permit binding of the phosphonate thereto;
- (2) removing unbound sample;
- (3) treating the polymeric zinc methacrylate to release phosphonate bound thereto
- (4) collecting the phosphonate so released, and
- (5) subjecting the collected phosphonate to analysis to determine the presence of level of phosphonate present therein.
Dependencies are inferred from the claim text.