Title:
METHOD FOR PREPARING SAMPLE FOR ANALYZING RESIDUAL AGRICULTURAL CHEMICAL
Document Type and Number:
WIPO Patent Application WO/2024/057616
Kind Code:
A1
Abstract:
Preparing a sample for analyzing a residual agricultural chemical in a caffeine-containing food such as tea involves: a step for extracting the residual agricultural chemical from the food by using an organic water-soluble extraction solvent to obtain an extract; a step for obtaining a mixture of a treatment agent, which contains powdery ion exchange group-modified carbon material-containing silica gel and powdery carbon material-containing silica gel, the extract, and an organic purification solvent capable of dissolving the residual agricultural chemical; and a step for fractionating a part of a liquid component from the mixture. The ion exchange group of the powdery ion exchange group-modified carbon material-containing silica gel is an amine-based functional group having anion exchange ability, for example, a 3-(2-aminoethylamino)propyl group or a 3-aminopropyl group.
Inventors:
MATSUDAIRA YUKO (JP)
Application Number:
PCT/JP2023/018550
Publication Date:
March 21, 2024
Filing Date:
May 18, 2023
Export Citation:
Assignee:
MIURA KOGYO KK (JP)
International Classes:
G01N1/10; B01J20/283; G01N1/34; G01N27/62; G01N30/06; G01N33/02
Foreign References:
| JP2010230577A | 2010-10-14 | |||
| CN115015433A | 2022-09-06 | |||
| CN103111091A | 2013-05-22 | |||
| JP2017003527A | 2017-01-05 |
Other References:
UEDA YUKO, HONDA KATSUHISA: "Development of Rapid Cleanup Method Using New Cleanup Agents for Analysis of Pesticide Residues in Tea", JOURNAL OF THE FOOD HYGIENIC SOCIETY OF JAPAN, vol. 58, no. 4, 1 August 2017 (2017-08-01), pages 188 - 194, XP093146240, DOI: 10.3358/shokueishi.58.188
IWAYA, AMANE: "Consideration of purification method for simultaneous analysis of pesticide residues in tea", ANNUAL REPORT OF KAGOSHIMA PREFECTURAL INSTITUTE FOR ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, KAGOSHIMA, JP, no. 11, 1 January 2010 (2010-01-01), Kagoshima, JP, pages 102 - 108, XP009553606, ISSN: 1346-2393
IWAYA, AMANE: "Consideration of purification method for simultaneous analysis of pesticide residues in tea", ANNUAL REPORT OF KAGOSHIMA PREFECTURAL INSTITUTE FOR ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, KAGOSHIMA, JP, no. 11, 1 January 2010 (2010-01-01), Kagoshima, JP, pages 102 - 108, XP009553606, ISSN: 1346-2393
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