Analysis method for measuring brominated flame retardants in edible mushrooms
A technology of brominated flame retardants and analysis methods, which is applied in the field of analysis of brominated flame retardants in edible fungi, can solve the problem of less residual detection of brominated flame retardants, and achieve the effect of high sensitivity and good precision
Active Publication Date: 2016-10-12
INSPECTION AND QUARANTINE TECHNOLOGY CENTER ZHONGSHAN ENTRY EXIT INSPECTION AND QUARANTINE
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Problems solved by technology
[0003] In my country, there are many studies on the detection methods of PBBs and PBDEs in electronic and electrical products, but there are few related studies on the detection of brominated flame retardant residues in food
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Embodiment 1
[0038] (1) Preparation of standard solution: Accurately weigh an appropriate amount of 3-bromodiphenyl ether, 3,4'-dibromodiphenyl ether, 2,4,4'-tribromodiphenyl ether, 2,3',4 ,4'-tetrabromodiphenyl ether, 2,2',3,4,4'-pentabromodiphenyl ether, 2,2',3,4,4',5'-hexabromodiphenyl ether, 2 ,3,3',4,4',5',6-Heptabromodiphenyl ether, 2,3,3',4,4',5,5',6-Octabromodiphenyl ether, 2,2 ',3,3',4,4',5,5',6-nonabromodiphenyl ether, 2,2',3,3',4,4',5,5',6,6'- Decabromodiphenyl ether (purchased from the mixed standard solution of AccuStandard Company in the United States, with a concentration of 50 μg / mL); 2-bromobiphenyl, 2,5-dibromobiphenyl, 2,4,6-tribromobiphenyl, 2 ,2',5',5'-tetrabromobiphenyl, 2,2',4,5',6-pentabromobiphenyl, 2,2',4,4',6,6'-hexabromobiphenyl Benzene (purchased from Dr., Germany), 2,3,3',4,4',5,5'-heptabromobiphenyl isooctane solution, 2,2',3,3',4,4' ,5,5'-octabromobiphenyl isooctane solution, 2,2',3,3',4,4',5,5',6-nonabromobiphenyl isooctane solution, decabromobiphenyl P...
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The invention discloses an analysis method for measuring brominated flame retardants in edible mushrooms. The method comprises the following steps: preparing a standard solution from brominated biphenyl ether and brominated biphenyl standard substances; performing QuEChERS extraction and purification on a sample, and then performing dispersive liquid-liquid micro-extraction processing; concentrating the sample by using a parallel quantitative concentrator under a reduced pressure; re-dissolving the sample with 1.0mL of normal hexane; filtering the sample with a filter membrane of 0.2 mu m; measuring the sample by using a gas chromatography-tandem mass spectrometer; quantifying with a peak area external standard method. The method has high sensitivity, the detection limit is 0.48mu g / kg-50mu g / kg, and the defect that few types of brominated flame retardants are detected in the edible mushrooms by a single extraction method is overcome. Compared with the conventional detection method, the analysis method has the advantages of easiness, rapidness, accuracy, high sensitivity and high precision, and is suitable for large-batch detection of edible mushrooms samples.
Description
【Technical field】 [0001] The invention relates to an analysis method for determining brominated flame retardants in edible fungi, belonging to the technical field of light industry chemical analysis. 【Background technique】 [0002] Brominated flame retardants (BFRs) are widely used industrial chemicals, which are widely used in printed circuit boards, plastics, coatings, wires and cables, and resin electronic components. In recent years, it has been detected in the environment and has certain toxicity to humans and mammals. July 31, 2012: The international environmental protection organization Greenpeace conducted a sampling test on the indoor dust of 11 ordinary households in 5 cities in China, and found that the dust samples contained four types of toxic and harmful substances, including brominated flame retardants. In BFRs products, about 1 / 3 contains polybrominated diphenyl ethers (polybrominated diphenylethers, PBDEs); 1 / 3 contains tetrabromobisphenol A (tetrabromobisp...
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IPC IPC(8): G01N30/88G01N30/02G01N30/06G01N30/14
CPCG01N30/02G01N30/06G01N30/14G01N30/88G01N2030/025G01N2030/062G01N2030/146G01N2030/884
Inventor 张宪臣卢俊文杨芳李浩洋李蓉华洪波张朋杰刘益锋
Owner INSPECTION AND QUARANTINE TECHNOLOGY CENTER ZHONGSHAN ENTRY EXIT INSPECTION AND QUARANTINE