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Gas chromatography-mass spectrometry method for measuring four kinds of trace phenylpropionic acid in source water

A technology of gas chromatography and water source water, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problem that the detection of trace phenylpropionic acid compounds is difficult to apply, and achieve a significant and safe effect

Active Publication Date: 2019-05-07
丁立平 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These reported methods are often suitable for the analysis of phenylpropionic acid compounds with higher concentrations, but are difficult to apply to the detection of trace amounts of phenylpropionic acid compounds
In addition, there is currently no method for the simultaneous analysis of these four trace phenylpropionic acids in source water

Method used

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  • Gas chromatography-mass spectrometry method for measuring four kinds of trace phenylpropionic acid in source water
  • Gas chromatography-mass spectrometry method for measuring four kinds of trace phenylpropionic acid in source water
  • Gas chromatography-mass spectrometry method for measuring four kinds of trace phenylpropionic acid in source water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] In Example 1, water from the Minjiang River was used as the sample matrix to carry out a standard addition recovery experiment to verify the feasibility of the method of the present invention. The water sample was taken from the water intake of the Minjiang River in the Taijiang section of the Fuzhou Waterworks, and was processed according to the following steps:

[0074] 1. Adsorption of compounds:

[0075] Add 200mL of Minjiang water into a 500mL separatory funnel, and add 2.00mL of standard solutions of three compounds with concentrations of 10.0μg / L, 20.0μg / L and 200.0μg / L respectively, to prepare three levels of six Parallel spiked samples, then add 0.40g p-styrenesulfonate-magnesium aluminum type hydrotalcite roasted product adsorbent to each funnel, shake for 15min to make the adsorbent adsorb the target;

[0076] 2. Desorption of compounds:

[0077] Add the water in the separatory funnel to a 50mL stoppered centrifuge tube and centrifuge at 4500rpm for 3min to ...

Embodiment 2

[0087] In Example 2, reservoir water was used as the sample matrix to carry out a standard addition recovery experiment to verify the feasibility of the method of the present invention. The water sample was taken from Dongzhang Reservoir, Fuqing, and processed according to the following steps:

[0088] 1. Adsorption of compounds:

[0089] Add 200mL of reservoir water to a 500mL separatory funnel, and add 2.00mL of three compound standard solutions with concentrations of 10.0μg / L, 20.0μg / L and 200.0μg / L to each of them to prepare three levels of six parallel Add the standard spiked sample of 0.40g p-styrenesulfonate-magnesium aluminum type hydrotalcite roasting product adsorbent to each funnel afterwards, shake for 15min to make the adsorbent adsorb the target;

[0090] 2. Desorption of compounds:

[0091] Add the water in the separatory funnel to a 50mL stoppered centrifuge tube and centrifuge at 4500rpm for 3min to separate the solid adsorbent from the aqueous solution and d...

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Abstract

The invention relates to a trace substance analysis detection method, in particular to a gas chromatography-mass spectrometry method for measuring trace3-(4-fluorophenyl)propionic acid, 3-(4-chlorophenyl)propionic acid, 3-(4-methoxyphenyl)propanoic acid and 3-(2-bromophenyl)propionic acid in source water. The gas chromatography-mass spectrometry method includes the steps that a target compound inwater is enriched on styrene sulfonate-magnesium-aluminum hydrotalcite through a novel adsorbent, complete elution of target objects is achieved through an acid dissolved adsorbent, the compound is extracted efficiently through a low dose of an organic solvent, and the gas chromatography-mass spectrometry method is used for rapid analytical measuring after methyl derivation. According to the gas chromatography-mass spectrometry method for measuring the four kinds of tracephenylpropionic acid in the source water, the adopted novel adsorbent uses a mode of disperse solid phase extraction to achieve fast and efficient adsorption of the target objects; the acid dissolved adsorbent is applied, and complete elution of the target objects can be achieved; only a small amount of the organic solventis used for extraction, and the significant advantages of safety, environmental protection and economical efficiency are achieved; and the gas chromatography-mass spectrometry method can be applied to rapid detection of the four kinds of trace objects in the source water.

Description

technical field [0001] The invention relates to a method for analyzing and detecting trace substances, in particular to a method for determining four trace amounts of 3-(4-fluorophenyl)propionic acid, 3-(4-chlorophenyl)propionic acid, 3-( Gas chromatography-mass spectrometry of 4-methoxyphenyl)propionic acid and 3-(2-bromophenyl)propionic acid. Background technique [0002] 3-(4-fluorophenyl)propionic acid, 3-(4-chlorophenyl)propionic acid, 3-(4-methoxyphenyl)propionic acid and 3-(2-bromophenyl)propionic acid are Commonly used as pharmaceutical and pesticide intermediates, the molecular structure of these four substances contains dissociable carboxyl groups, which are relatively polar and can exist in water bodies stably and permanently after being dissolved in water in trace amounts, thus becoming harmful chemicals that pollute source water. material source. [0003] At present, the main methods for the detection of phenylpropionic acid substances are high performance liq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06
Inventor 丁立平蔡春平金玲郑香平林荆黄菁菁张睿郑铃陈志涛郑麟毅
Owner 丁立平