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A method for determining organophosphorus flame retardants in plants

An organophosphorus and flame retardant technology, which is applied in the field of determination of organophosphorus flame retardants in plants, can solve the problems of limited analysis and determination methods of OPFRs, and achieve the effects of low detection limit, good separation effect and accurate purification treatment.

Active Publication Date: 2021-09-24
SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the research reports on the analysis and determination methods of OPFRs are mainly concentrated in the atmosphere, dust, water, soil, sediment and animals, and the analysis and determination methods of OPFRs in plants are still very limited.

Method used

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  • A method for determining organophosphorus flame retardants in plants
  • A method for determining organophosphorus flame retardants in plants
  • A method for determining organophosphorus flame retardants in plants

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Embodiment 1

[0032] 1. Determination and analysis method

[0033] (1) The extraction pool and all glass instruments were cleaned with three organic solvents, acetone, dichloromethane and n-hexane. The plant samples are washed, freeze-dried, ground and pulverized.

[0034] (2) Weigh 1g of the crushed plant sample, mix it with 1g of diatomaceous earth (60-80 mesh), put it into a 33mL extraction cell, add a recovery rate indicator (100ng d 12 -TCEP, d 27 -TNBP and TAP), using a fast solvent extractor to extract the extract. The extraction conditions are: extraction temperature: 80°C; extraction solvent: dichloromethane / acetone (volume ratio: 1:1); extraction pressure: 10MPa; heat balance time: 5min; static extraction time: 5min; rinse volume: 40%; Purge time: 60s; number of cycles: 2; cleaning: on; solvent consumption: 35mL.

[0035] (3) Rotate and concentrate the extract, transfer it to a polytetrafluoroethylene centrifuge tube, add 5 g of ferric phosphate and 10 mL of n-hexane to remove...

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Abstract

The invention discloses a method for measuring organophosphorus flame retardants in plants. The method comprises the following steps: adding a recovery indicator, extracting with a fast solvent extractor, purifying the extract with a solid-phase extraction column, eluting with ethyl acetate, adding an internal standard and using a high-performance liquid chromatography-triple quadrupole in series Mass spectrometry was used to detect and analyze OPFRs. The method can accurately perform purification treatment, qualitative and quantitative analysis and determination of OPFRs in plant samples, and is suitable for standardization.

Description

technical field [0001] The invention belongs to the technical field of organic pollutant analysis and detection, and in particular relates to a method for measuring organophosphorus flame retardants in plants. Background technique [0002] Organophosphorus flame retardants (Organophosphorus flame retardants, OPFRs) are a class of synthetic phosphate derivatives, including three types of compounds: phosphinates, phosphonates, and phosphate triesters. OPFRs are mainly organophosphate triesters, the chemical structure of which is that the hydrogen on the phosphoric acid group is replaced by different groups, and its physical and chemical properties change with the change of the side chain group. At present, OPFRs are widely used as alternative flame retardants in plastics, electronics, construction, machinery and other industries. Due to their excellent flame retardant properties, the production and usage of OPFRs are increasing worldwide. As an additive flame retardant, OPFR...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/30G01N30/32G01N30/34G01N30/72
CPCG01N30/02G01N30/06G01N30/30G01N30/32G01N30/34G01N30/72G01N2030/062
Inventor 谢金丽孙毓鑫谢晨敏张黎
Owner SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI