Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Detection method for simultaneously determining multiple phthalic acid ester substances

A technology of butyl benzyl phthalate and dioctyl phthalate, which is applied in the field of chemical analysis, can solve the problems of spectral overlap, waste of chemical reagents, complicated operation, etc., so as to overcome the spectral overlap and simplify the chemical treatment process. Effect

Pending Publication Date: 2022-07-12
GUILIN UNIV OF ELECTRONIC TECH +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Spectrophotometry is usually used for the determination of a single component. In multi-component analysis, spectral overlap may occur and seriously interfere with the determination. Although the interference can be removed by adding a masking agent or performing separation before detection, the operation Complicated, waste of chemical reagents, and may bring new interference, low efficiency

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
  • Detection method for simultaneously determining multiple phthalic acid ester substances
  • Detection method for simultaneously determining multiple phthalic acid ester substances
  • Detection method for simultaneously determining multiple phthalic acid ester substances

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Establishment of MLR-spectrophotometry

[0033] Preparation of standard solutions

[0034] Precisely pipette 20μL of DOP, DBP, BBP into a 100mL volumetric flask, make up the volume with methanol, and prepare DOP, DBP, BBP stock solutions with a mass concentration of 200mg / L respectively; The single standard solutions and mixed standard solutions of DOP, DBP and BBP shown in Table 1 and Table 2 were placed in a 50mL colorimetric tube.

[0035] Table 1 is a single standard solution of DOP, DBP and BBP

[0036]

[0037]

[0038] Table 2 is the mixed standard solution of DOP, DBP and BBP

[0039]

[0040] Spectrophotometric Detection Technology

[0041] Use a UV spectrophotometer to scan a single standard solution with methanol reagent as a reference and scan in the wavelength range of 185-300nm with a 1cm cuvette, and measure the absorbance of the solution every 1nm, such as Figures 1 to 3 shown.

[0042] figure 1 It is the gradient series of 1-6 groups of ...

Embodiment 2

[0059] The concentrations in the mixed solution of DOP, DBP and BBP were tested by the method provided in Example 1. To illustrate the reproducibility and accuracy of the method provided by the present invention

[0060] Prepare 6 groups of mixed solutions of DOP, DBP, and BBP within the measurement range respectively. The concentration preparation is shown in Table 3. According to the measurement steps provided in Example 1, the concentrations of DOP, DBP, and BBP are repeated three times, and the relative standard deviations are 6.02. %, 9.13%, and 9.40%, and the recovery rates of standard addition were: 104.26%, 94.66%, and 97.65%, respectively. The data are shown in Table 4.

[0061] Table 3 is the prepared mixed solution of DOP, DBP and BBP

[0062]

[0063]

[0064] Table 4 According to the steps provided in Example 1, the relevant data of the three substances mixed solution of DOP, DBP and BBP in Table 3 were measured

[0065]

[0066] Note: MRE (%) is the re...

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 discloses a detection method for simultaneously determining multiple phthalic acid ester substances, and relates to the technical field of chemical analysis. The method comprises the following steps: by taking dioctyl phthalate, di-n-butyl phthalate and butyl benzyl phthalate as standard substances, mixing all standard solutions according to a certain proportion to prepare a mixed standard solution; establishing an MLR-spectrophotometric method concentration prediction model; and measuring the concentrations of dioctyl phthalate, di-n-butyl phthalate and butyl benzyl phthalate in a solution with an unknown concentration by adopting the prediction model. According to the method, multiple linear regression analysis and the spectrophotometric method are combined, the problems of spectrum overlapping and mutual interference among components can be solved, a simple and convenient chemometrics method is provided for simultaneous determination of multiple PAEs through the spectrophotometric method, and the method can be applied to automatic control analysis of plasticizers in environmental monitoring and actual work.

Description

technical field [0001] The invention relates to the technical field of chemical analysis, in particular to a detection method for simultaneously measuring multiple phthalates. Background technique [0002] Phthalates (PAEs), also known as phthalates, are a general term for about 30 compounds. They are esterified by phthalic anhydride and alcohol under acid catalysis. They are a kind of softening agent. Chemicals, mainly as plasticizers, are used in plastic production to improve plasticity and flexibility. PAEs contain weak estrogen components, which can affect the endocrine, mutagenic, teratogenic and cancer cell proliferation of organisms. They are a class of environmental hormones that can enter the human body through breathing, diet and skin contact, causing harm to human health. In recent years, with the improvement of the level of instrumental analysis, more and more detection methods for PAEs have been developed. The main detection methods are: gas chromatography-mass...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 钟山李瑞月胡敏张漓杉
Owner GUILIN UNIV OF ELECTRONIC TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com