Pretreatment technology for detecting polybrominated diphenyl ethers residue in vegetables

A polybrominated diphenyl ether and vegetable technology, which is applied in the field of analytical chemistry, can solve the problems of large consumption of organic solvents, complicated purification process and high detection cost, and achieves the effects of less organic solvent consumption, high extraction efficiency and less environmental pollution
CN106526044AInactive Publication Date: 2017-03-22INST OF SOIL SCI CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF SOIL SCI CHINESE ACAD OF SCI
Publication Date
2017-03-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses pretreatment technology for detecting polybrominated diphenyl ethers residue in vegetables and belongs to the technical field of analytical chemistry. The pretreatment technology includes steps: 1, performing ASE extraction on a ground vegetable sample; concentrating extract; 3, loading a sample of the concentrated extract to an activated florisil-acidic silica gel solid-phase extraction purifying column, and using normal hexane for elution; 4, blow-drying eluent, and adding a fixed amount of normal hexane for re-dissolving; 5, performing gas chromatography-electronic capture device (GC-ECD) detection. The pretreatment technology has the advantages of simple operation, high speed and high extraction efficiency. The solid-phase extraction purifying column which is self-prepared is adopted to purify vegetable extract, so that purifying effect is good and cost is low. GC-ECD detection finds that the pretreatment technology is efficient and sensitive and is high in efficiency in extracting the PBDEs in the vegetables, good in purifying effect and suitable for pretreatment of qualitative and quantitative analysis of the PBDEs residue in the vegetables.
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Description

technical field

[0001] The invention belongs to the technical field of analytical chemistry, and more specifically relates to a pretreatment technology for detecting polybrominated diphenyl ether residues in vegetables. Background technique

[0002] As a class of brominated flame retardants (BFRs), polybrominated diphenyl ethers (Polybrominated diphenyl ethers, referred to as PBDEs) have the advantages of high flame retardant efficiency, good thermal stability, and low price, and are often added to polymers such as polystyrene and polyurethane foam. Synthetic materials, and widely used in industrial products such as electronic products, textiles, building materials and furniture. PBDEs belong to persistent organic pollutants (POPs), which are hydrophobic, persistent and bioaccumulative, and are easy to adsorb in particulate matter and sediments and enrich in organisms, and can migrate long distances in the environment. PBDEs are difficult to degrade in the environment and h...

Claims

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