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Method for detecting triazine UV absorbent in environmental dust based on LC-MS technology

A technology of triazines and ultraviolet absorbers, which is applied in the field of chemical detection, can solve the problems of systematic qualitative and quantitative detection of triazine ultraviolet absorbers and few ultraviolet absorbers, and achieve stable accuracy, high precision, and multiple detection types Effect

Pending Publication Date: 2022-06-03
罗文杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there are relatively few studies on UV absorbers, and there is no systematic qualitative and quantitative detection method for triazine UV absorbers.

Method used

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  • Method for detecting triazine UV absorbent in environmental dust based on LC-MS technology
  • Method for detecting triazine UV absorbent in environmental dust based on LC-MS technology
  • Method for detecting triazine UV absorbent in environmental dust based on LC-MS technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

The following takes dust A in the dismantling workshop of electronic waste as an example to illustrate the method for quantitative analysis of triazine UV absorbers in environmental dust samples by LC-MS / MS technology, including the following steps:

S1 sample pretreatment: pretreatment of environmental dust samples: store the collected dust samples in a -80±5℃ refrigerator for analysis; weigh about 100 mg of dust samples, add 4.0 mL of acetonitrile, shake for 15 min, and ultrasonicate for 20 min extraction, followed by centrifugation at 4000 r / min for 6 min, the supernatant was transferred to a clean glass tube, and the extraction process was repeated twice. The combined supernatants were concentrated and replaced with methanol to 1 mL under a gentle stream of nitrogen. The concentrated supernatant was filtered through a 0.2 μm organic filter and analyzed by LC-MS / MS.

[0014] S2 LC-MS detection: Analysis was performed using a liquid chromatography-mass spectrometer in multip...

Embodiment 2

The following takes dust B in a plastic pretreatment workshop as an example to illustrate the method for quantitative analysis of triazine UV absorbers in environmental dust samples by LC-MS / MS technology, including the following steps:

S1 sample pretreatment: pretreatment of environmental dust samples: store the collected dust samples in a -80±5℃ refrigerator for analysis; weigh about 100 mg of dust samples, add 4.0 mL of acetonitrile, shake for 15 min, and ultrasonicate for 20 min extraction, followed by centrifugation at 4000 r / min for 6 min, the supernatant was transferred to a clean glass tube, and the extraction process was repeated twice. The combined supernatants were concentrated and replaced with methanol to 1 mL under a gentle stream of nitrogen. The concentrated supernatant was filtered through a 0.2 μm organic filter and analyzed by LC-MS / MS.

[0017] S2 LC-MS detection: Analysis was performed using a liquid chromatography-mass spectrometer in multiple reaction m...

Embodiment 3

The following takes a plastic warehouse dust C as an example to illustrate the method for quantitative analysis of triazine UV absorbers in environmental dust samples by LC-MS / MS technology, including the following steps:

S1 sample pretreatment: pretreatment of environmental dust samples: store the collected dust samples in a -80±5℃ refrigerator for analysis; weigh about 100 mg of dust samples, add 4.0 mL of acetonitrile, shake for 15 min, and ultrasonicate for 20 min extraction, followed by centrifugation at 4000 r / min for 6 min, the supernatant was transferred to a clean glass tube, and the extraction process was repeated twice. The combined supernatants were concentrated and replaced with methanol to 1 mL under a gentle stream of nitrogen. The concentrated supernatant was filtered through a 0.2 μm organic filter and analyzed by LC-MS / MS.

[0020] S2 LC-MS detection: Analysis was performed using a liquid chromatography-mass spectrometer in multiple reaction monitoring (MRM)...

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Abstract

The invention discloses a method for quantitatively analyzing TUVs (triazine ultraviolet absorbents) in an environmental dust sample based on an LC-MS / MS technology. The method comprises the steps of sample pretreatment and LC-MS / MS detection. According to the present invention, acetonitrile is adopted to carry out ultrasonic-assisted extraction on an environmental dust sample, and LC-MS / MS is adopted to carry out analysis by using an electrospray ionization (ESI) source in a multi-reaction monitoring (MRM) mode, such that the method can be used to analyze the environmental dust sample, the seven triazine ultraviolet absorbent samples in the collected environmental dust are qualitatively identified by adopting retention time and a mass spectrum library, and quantitative analysis is performed by using an external standard method according to chromatographic conditions. The method provided by the invention is high in precision and stable, and has important significance on subsequent research of triazine ultraviolet absorbent substances.

Description

technical field [0001] The invention relates to the technical field of chemical detection, in particular to a method for quantitatively analyzing triazine ultraviolet absorbers in environmental dust samples based on LC-MS / MS technology. Background technique [0002] 1. Polymer materials usually exist in the form of polymers. These polymer materials are exposed to sunlight for a long time and are exposed to ultraviolet rays, which are prone to aging. Once the aging phenomenon of polymer materials occurs, they will soon lose their use value. The use of UV absorbers can effectively prevent the huge destructive effects of UV light on polymer materials, such as photooxidation, degradation and other aging phenomena, and improve the service life and material properties of polymer materials. As emerging UV absorbers, TUVs (triazine UV absorbers) are becoming more widely used, however, their environmental exposure levels are currently unclear. The environmental and ecological probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G01N30/02G01N30/06G01N30/34G01N30/72
CPCG01N30/02G01N30/06G01N30/34G01N30/7266G01N27/62
Inventor 罗文杰
Owner 罗文杰
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