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Dielectric barrier discharge ionization mass spectrometry method for perfluorinated compounds in textile products

A technology of dielectric barrier discharge and perfluorinated compounds, which is applied in the direction of material analysis, analysis materials, and measuring devices by electromagnetic means, to achieve sensitive and rapid analysis methods and simple operation

Active Publication Date: 2018-06-12
CHINESE ACAD OF INSPECTION & QUARANTINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the detection and analysis of perfluorinated compounds in textiles by dielectric barrier discharge ionization mass spectrometry

Method used

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  • Dielectric barrier discharge ionization mass spectrometry method for perfluorinated compounds in textile products
  • Dielectric barrier discharge ionization mass spectrometry method for perfluorinated compounds in textile products
  • Dielectric barrier discharge ionization mass spectrometry method for perfluorinated compounds in textile products

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 As shown, a dielectric barrier discharge ionization mass spectrometry device includes a sample carrier, a dielectric barrier discharge ion source 1, a peristaltic pump 2 and a mass spectrometer 3, wherein the sample carrier includes a metal base layer 4, a foam layer 5 and a special The Teflon board layer 6, on which the sample 7 to be tested is fixed, and the Teflon board layer 6 is connected with the peristaltic pump 2 through a metal clip.

[0030] The sample carrier is strip-shaped and arranged horizontally. The dielectric barrier discharge ion source 1 and the mass spectrometer 3 are respectively arranged on both sides of the sample carrier. The angle between the exit of the dielectric barrier discharge ion source 1 and the entrance of the mass spectrometer 3 and the sample carrier is Both are 45°.

[0031] The length, width and height of the metal base layer 4 are respectively 18.5cm, 2.3cm and 0.4cm, the length, width and height of the Teflon bo...

Embodiment 2

[0036] The dielectric barrier discharge ionization mass spectrometric analysis method of perfluorinated compounds in textiles comprises the following steps:

[0037] Set the parameters of the dielectric barrier discharge ion source 1 and the mass spectrometer 3, fix the sample 7 to be detected on the sample carrier, drop the sample solution at a certain interval in the length direction of the sample 7 as the sample point, dry naturally, and the dielectric barrier discharge ion The source 1 and the mass spectrometer 3 are aligned with the front end of the sample 7, that is, at the position 1 cm before the first sample point, the mass spectrometer 3 is turned on to be in the working state, the dielectric barrier discharge ion source 1 is fed with helium gas and a high voltage is applied to generate a plasma beam and the standby The detected sample 7 contacts, and at the same time, the peristaltic pump 2 is turned on to drive the sample carrier to move at a constant speed for dete...

Embodiment 3

[0042] 1. Instruments and materials

[0043] Experimental reagents: perfluorinated compounds, blended fabrics (purchased on the market), methanol as chromatographic reagents (PA Company, USA), ultrapure water (Milli-Q ultrapure water), and other reagents are analytical reagents.

[0044]Dielectric barrier discharge ion source: DBDI-100 ion source (Ningbo Huayi Ningchuang Intelligent Technology Co., Ltd.) and its supporting components.

[0045] Self-made mobile slide rail system, that is, a dielectric barrier discharge ionization mass spectrometry device: such as figure 1 shown.

[0046] 2. Mass spectrometry conditions:

[0047] Bruker amaZon ion trap mass spectrometer; negative ion scanning mode; scanning range: m / z 100-800; capillary voltage: 800V; atomizing gas flow rate: 0psi; drying gas flow rate: 0L / min; Time: 10ms; Helium flow rate: 4L / min; Ion source temperature: 175°C; Distance from the nozzle to the ceramic tube: 1.2cm; Distance from the ceramic tube to the front e...

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Abstract

The invention discloses a dielectric barrier discharge ionization mass spectrometry method for perfluorinated compounds in textile products, comprising the steps of fixing a sample (7) under test ontoa sample carrier, dropping a solvent at certain intervals in the length direction of the sample (7) to obtain a sample point, allowing natural drying, aligning a dielectric barrier discharge ion source (1) and a mass spectrometer (3) with the front end of the sample (7), starting the dielectric barrier discharge ion source (1) and the mass spectrometer (3), setting parameters, allowing a peristaltic pump (2) to drive the sample carrier to move, and detecting. The dielectric barrier discharge ionization mass spectrometry method is used for the first time in the direct detection of perfluorinated compounds in textile products; the established method is suitable for sensitively and quickly providing qualitative and quantitative detection and analysis for perfluorinated compounds in textile products.

Description

technical field [0001] The invention relates to a detection method of chemical substances, in particular to a dielectric barrier discharge ionization mass spectrometry analysis method of perfluorinated compounds in textiles. Background technique [0002] Perfluorinated compounds are a new type of fluorine-containing persistent organic pollutants with different carbon chain lengths. Because of their hydrophobic and oleophobic properties, they are widely used as surfactants in chemical, textile, leather and many other fields closely related to daily life. Studies have shown that such substances can cause adverse biological reactions in organisms at a certain dose, and such substances have stable chemical properties and will only be cracked when incinerated at high temperatures. At present, there is no report on the detection and analysis of perfluorinated compounds in textiles by dielectric barrier discharge ionization mass spectrometry. Contents of the invention [0003] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/68
CPCG01N27/68
Inventor 马强王春王长海白桦
Owner CHINESE ACAD OF INSPECTION & QUARANTINE
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