Method for analyzing N-(phosphonomethyl) aminodiacetic acid (PMIDA) component in PMIDA mother liquor

A technique for analyzing the mother liquor of bisglyphosate, which is applied in the field of chemical analysis, and can solve the problems of many nitrogen-containing compounds, complex mother liquor components, and no analytical method established

Inactive Publication Date: 2012-10-03
CHONGQING UNISPLENDOUR CHEM
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is very difficult to deal with diglyphosate mother liquor in production at present, the main reason is that the composition of the mother liquor is relatively complex, and there are no relevant reports on the comprehensive analysis of diglyphosate mother liquor, and the actual analysis of many components of diglyphosate mother liquor has not yet established analytical methods
At present, the determination of the iminodiacetic acid content of a single component in the solution mainly adopts the acid-base titration method using methyl red as an indicator; the determination of the content of phosphorous acid, phosphoric acid and hydrochloric acid of a single component in the solution mainly adopts conventional methods. Acid-base titration, directly titrate with alkali standard solution; for the determination of the content of diglyphosate in the solution, mainly use lead nitrate standard solution for complexometric titration, with pH 9.0 buffer solution and arsenazo as indicators Mainly adopt sodium sulfite addition method etc. to the mensuration of formaldehyde content in the solution; To the mensuration of the nitrilotriacetic acid of single component, in the prior art, use nitrogen determination method to measure nitrilotriacetic acid content, but nitrogen-containing compound is more in the mother liquor, interferes Large, there is also an acid-base complexometric titration method, that is, after dissolving nitrilotriacetic acid with a

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
  • Method for analyzing N-(phosphonomethyl) aminodiacetic acid (PMIDA) component in PMIDA mother liquor
  • Method for analyzing N-(phosphonomethyl) aminodiacetic acid (PMIDA) component in PMIDA mother liquor
  • Method for analyzing N-(phosphonomethyl) aminodiacetic acid (PMIDA) component in PMIDA mother liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of analytical method of diglyphosate mother liquor composition, wherein nitrilotriacetic acid is determined by following method:

[0028] Instrument: Shimadzu high performance liquid chromatography (with UV detector)

[0029] Chromatographic column: DIKMA ODS-3, 250×4.5mm, 5μm

[0030] Mobile phase: 0.1%KH 2 PO 4 , with H 3 PO 3 Adjust pH=2.0

[0031] Flow rate: 0.8mL / min

[0032] UV: 195nm

[0033] Injection volume: 20μL

[0034] Determination of standard solution:

[0035] Take nitrilotriacetic acid (AR, the purchased nitrilotriacetic acid sample has a purity of 98%) as the reference substance, weigh 0.1155g into a 50mL volumetric flask, add water to dissolve and dilute to the mark, shake well, and accurately draw 1mL of the solution in the In a 100mL volumetric flask, add mobile phase to dilute to the mark, shake well, filter through a microporous membrane, and inject the sample. The peak area of ​​nitrilotriacetic acid is 67886.

[0036] Sample det...

Embodiment 2

[0064] A kind of analytical method of diglyphosate mother liquor composition, wherein nitrilotriacetic acid is determined by following method:

[0065] Instrument: Shimadzu high performance liquid chromatography (with UV detector)

[0066] Chromatographic column: InertsilODS-4, 250×4.5mm, 5μm

[0067] Mobile phase: 0.15%H 3 PO 4 Aqueous solution, pH=3.0

[0068] Flow rate: 0.6mL / min

[0069] UV: 195nm

[0070] Injection volume: 20μL

[0071] Determination of standard solution:

[0072] Take nitrilotriacetic acid (AR, the purchased nitrilotriacetic acid sample has a purity of 98%) as the reference substance, weigh 0.1000g into a 50mL volumetric flask, add water to dissolve and dilute to the mark, shake well, and accurately draw 1mL of the solution in the In a 100mL volumetric flask, add mobile phase to dilute to the mark, shake well, filter through a microporous membrane, and inject the sample. The peak area of ​​nitrilotriacetic acid is 66428.

[0073] Sample determin...

Embodiment 3

[0079] A kind of analytical method of diglyphosate mother liquor composition, wherein nitrilotriacetic acid is determined by following method:

[0080] Instrument: Shimadzu high performance liquid chromatography (with UV detector)

[0081] Chromatographic column: DIKMA ODS-3, 250×4.5mm, 5μm

[0082] Mobile phase: 0.2%KH 2 PO 4 , with H 3 PO 4 Adjust pH=2.0

[0083] Flow rate: 1.5mL / min

[0084] UV: 195nm

[0085] Injection volume: 20μL

[0086] Determination of standard solution:

[0087] Take nitrilotriacetic acid (AR, the purchased nitrilotriacetic acid sample has a purity of 98%) as the reference substance, weigh 0.1155g into a 50mL volumetric flask, add water to dissolve and dilute to the mark, shake well, and accurately draw 1mL of the solution in the In a 100mL volumetric flask, add mobile phase to dilute to the mark, shake well, filter through a microporous membrane, and inject the sample. The peak area of ​​nitrilotriacetic acid is 66101.

[0088] Sample det...

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

No PUM Login to view more

Abstract

The invention relates to a method for analyzing component of N-(phosphonomethyl) aminodiacetic acid (PMIDA) mother liquor, in particular to a component analysis method in which iminodiacetonitrile is used as a main raw material for producing the PMIDA. The method can be used for measuring phosphoric acid, nitrilotriacetic acid and the PMIDA which release inert hydrogen quantitatively by virtue of the separated measurement on the content of the PMIDA, nitrilotriacetic acid and iminodiacetic acid in the mother liquor and the measurement on polybasic acids such as the PMIDA, the phosphoric acid and phosphorous acid step by step and simultaneously by adopting calcium chloride to strengthen weak acid; and the content of iminodiacetic acid, the PMIDA, nitrilotriacetic acid, phosphorous acid, hydrochloric acid and phosphoric acid in the PMIDA mother liquor can be skillfully measured according to the reaction law and interrelation of all substances. The method is proven to be accurate, comprehensive, scientific, reasonable and simple in operation, and provides a reliable basis for recycling and comprehensively utilizing the PMIDA mother liquor, thus having good popularization value.

Description

[0001] The present invention is a divisional application of the invention patent application with the patent application number 201010552827.5, the application date is November 22, 2010, and the title is "A Method for Analyzing Diglyphosate Mother Liquor Components". technical field [0002] The invention relates to a method for analyzing the components of diglyphosate mother liquor, in particular to a method for analyzing the components of mother liquor produced when diglyphosate is produced by using iminodiacetonitrile as the main raw material, and belongs to the field of chemical analysis. Background technique [0003] Diglyphosate (N-(phosphomethyl)iminodiacetic acid) It is an intermediate for the production of glyphosate (N-phosphonomethylglycine) from iminodiacetonitrile (IDA method). Glyphosate is a widely used organic phosphine herbicide, which has the characteristics of high efficiency, broad spectrum, low toxicity and safety, and is very effective in the control o...

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): G01N30/02G01N21/31G01N21/79
Inventor 罗延谷胡欣
Owner CHONGQING UNISPLENDOUR CHEM
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