Gas chromatography method of measuring trace glufosinate ammonium, glyphosate and aminomethylphosphonic acid in drinking water

An aminomethylphosphonic acid and gas chromatography technology, which is applied in the field of analysis and detection of harmful trace substances, can solve the problems such as a large amount of time and few types of adsorption and elution, and achieve the effect of saving adsorption and elution time.

Active Publication Date: 2019-01-15
丁立平 +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the deficiency that a large amount of organic solvents need to be used in the liquid-liquid extraction method existing in the detection pretreatment of trace glufosinate, glyphosate and its metabolite aminomethylphosphonic acid in existing drinking water; and the available solid phase extraction method There are few types of solid phase extraction products, and the adsorption

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Gas chromatography method of measuring trace glufosinate ammonium, glyphosate and aminomethylphosphonic acid in drinking water
  • Gas chromatography method of measuring trace glufosinate ammonium, glyphosate and aminomethylphosphonic acid in drinking water
  • Gas chromatography method of measuring trace glufosinate ammonium, glyphosate and aminomethylphosphonic acid in drinking water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] In Example 1, tap water was used as the sample matrix to carry out standard addition recovery experiments to verify the feasibility of the method of the present invention. The tap water samples were taken from the Technology Center of Fuqing Entry-Exit Inspection and Quarantine Bureau. After sampling, the water samples were placed in a refrigerator at 4°C for 1 hour.

[0074] Proceed as follows:

[0075] 1. Adsorption of trace target substances:

[0076] Take a 500mL separatory funnel and add 200mL of tap water to it, respectively take 2.00mL of the above-mentioned 10.0μg / L, 20.0μg / L and 200.0μg / L standard use solutions respectively, and prepare three-level six-parallel spiked positive samples, Add 0.20g methanesulfinate-magnesium aluminum type hydrotalcite roasted product adsorbent to each funnel afterwards, shake 10min to make the roasted product adsorbent adsorb traces of glufosinate-ammonium, glyphosate and its metabolite aminomethylphosphine in water acid;

[007...

Embodiment 2

[0090] In Example 2, well water was used as the sample matrix to carry out standard addition recovery experiments to verify the feasibility of the method of the present invention. The well water samples were taken from the production well water of Fuqing Longxiang Food Co., Ltd., and the water samples were refrigerated at 4°C after sampling. The box was brought back to the laboratory for analysis and testing.

[0091] Proceed as follows:

[0092] 1. Adsorption of trace target substances:

[0093] Take a 500mL separatory funnel and add 200mL of well water to each of them, take 2.00mL of the above-mentioned 10.0μg / L, 20.0μg / L and 200.0μg / L standard solutions respectively, and prepare three-level six-parallel spiked positive samples , then add 0.20g methanesulfinate-magnesium aluminum type hydrotalcite roasted product adsorbent to each funnel, shake for 10min to make the roasted product adsorbent adsorb traces of glufosinate-ammonium, glyphosate and its metabolite aminomethyl in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Apertureaaaaaaaaaa
Login to view more

Abstract

The invention relates to a trace toxicant analysis and detection method, and particularly relates to a gas chromatography method of measuring trace glufosinate ammonium, glyphosate and aminomethylphosphonic acid (metabolite thereof) in drinking water. The method comprises the steps of: enriching a trace target chemical-compound in the drinking water by novel methane sulfinate-magnesium-aluminum hydrotalcite calcined-product adsorbent stones, eluting the target material by a saturated sodium chloride solution, adjusting a pH value by sodium hydroxide, and derivatizing the target material step by step by Isopropyl chloroformate and trimethylsilylated diazomethane as a derivative agent, and using the gas chromatography method for fast analysis measurement. The novel adsorbent used by the method realizes fast and highly efficient adsorption on the target material by using a manner of dispersive solid-phase extraction, and the method can save a large amount of adsorption and elution time ascompared with a manner of solid-phase extraction; and the method only applies small-amount organic-solvent extraction, and has the remarkable advantages of safety, environmental protection and economy as compared with a liquid-liquid extraction method requiring use of a large amount of organic solvent.

Description

technical field [0001] The invention relates to a method for analyzing and detecting harmful trace substances, in particular to a gas chromatography method for measuring trace amounts of glufosinate-ammonium, glyphosate and aminomethylphosphonic acid in drinking water. Background technique [0002] Glyphosate and Glufosinate ammonium are organophosphate herbicides. Among them, glyphosate is the herbicide with the highest sales volume in the world, and it is also the pesticide variety with the highest sales in the world. The sales volume in 2012 reached 4.575 billion US dollars; Because of the problem of glyphosate, people usually apply glufosinate in combination to ensure the yield and quality of crops. In 2012, the sales of glufosinate also reached 420 million US dollars. In recent years, the production and usage of these two herbicides have been increasing year by year, and their toxicity and possible food safety hazards have attracted people's attention. [0003] Since ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N30/02
CPCG01N30/02
Inventor 丁立平张睿郑铃姜晖郑香平黄菁菁陈志涛郑麟毅蔡春平
Owner 丁立平
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap