US 2022/0018774 A1 · A METHOD FOR DETERMINING CONCENTRATION OF POLYELECTROLYTES AND PHOSPHONATES

Abstract

The present invention provides a method for determining concentration of polyelectrolyte or phosphonate in a sample comprising polyelectrolyte or phosphonate in low concentrations. The method comprises admixing the sample with a reagent comprising a lanthanid(lll) ion; admixing the sample with silica; allowing the polyelectrolyte or phosphonate in the sample to interact with the reagent comprising the lanthanide(lll) ion and the silica; exciting the sample and detecting a sample signal deriving from the lanthanide(lll) ion by time-resolved fluorescence measurement; and determining the concentration of the polyelectrolyte or phosphonate in the sample by using the detected sample signal.

Claims15

Dependent claims

A method for determining concentration of polyelectrolyte or phosphonate in a sample comprising polyelectrolyte or phosphonate, the method comprising:

optionally diluting and/or purifying the sample;
admixing the sample with a reagent comprising a lanthanide(III) ion;
admixing the sample with silica;
allowing the polyelectrolyte or phosphonate in the sample to interact with the reagent comprising the lanthanide(III) ion and the silica;
exciting the sample at a excitation wavelength and detecting a sample signal deriving from the lanthanide(III) ion at a signal wavelength by using time-resolved fluorescence measurement;
and
determining the concentration of the polyelectrolyte or phosphonate in the sample by using the detected sample signal.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/281,827Filed 27 Sep 2019

Priority

FI 201858171 Oct 2018

Published

20 Jan 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

G01N 21/6408
Fluorescence; Phosphorescence: with measurement of decay time, time resolved fluorescence
G01N 21/77
Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated: by observing the…
G01N 21/643
Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects,…:…
G01N 31/22
Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted…

A method for determining concentration of polyelectrolytes and phosphonates

Life of this patent

A method for determining concentration of polyelectrolytes and phosphonates

Life of this patent

Abstract

Claims15