Secondary mass spectrometry method for detecting 16 kinds of polycyclic aromatic hydrocarbons in aquatic products
A polycyclic aromatic hydrocarbon, secondary mass spectrometry technology, applied in the field of detection, can solve the problems of cumbersome pretreatment and purification procedures, prone to false positives, matrix interference, etc., to achieve no emulsification phenomenon, improve sensitivity, and remove the interference of interfering substances. Effect
Inactive Publication Date: 2015-04-22
INST OF QUALITY STANDARDS & TESTING TECH FOR AGRO PROD OF SHANDONG ACADEMY OF AGRI SCI
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Problems solved by technology
Its pretreatment and purification procedures are cumbersome and time-consuming, and gas chromatography-mass spectrometry selective ion mode detection is prone to false positives and matrix interference
Method used
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[0039] 1.1 Experimental instruments and materials
[0040] 1.1.1 Main Instruments
[0041] Gas chromatography-triple quadrupole tandem mass spectrometry (TSQ Quantum GC) with triples autosampler automatic sampler, Thermo Fisher Scientific Co., Ltd.
[0042] Vortex model QL-861, Haimen Qilin Bell Instrument Manufacturing Co., Ltd.
[0043] Electronic Balance Model AL 204 Mettler-Toledo Instruments Ltd.
[0044] The centrifuge is Eppendorf 5804R, German Eppendorf Company.
[0045] 1.1.2 Experimental materials
[0046]The polycyclic aromatic hydrocarbon single standard standard sample is produced by AccuStandard Inc (USA). The mixed standard of the polycyclic aromatic hydrocarbon used is first prepared by the single standard with n-hexane to make a 10 μg / mL mixed standard, and then gradually diluted to the required concentration, - Store in a refrigerator at 18°C for later use.
[0047] Solid-phase extraction (Cleanert Florisil) was provided by Bonna-Agela Technology Co....
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Abstract
The invention discloses a secondary mass spectrometry method for detecting 16 kinds of polycyclic aromatic hydrocarbons in aquatic products. According to the method, ultrasonic extraction and florisil column purification are adopted, qualitative and quantitative detection is carried out by utilizing a selective reaction detecting mode, the mode can be used for detecting and analyzing trace substances in a complex matrix and only one specific pair or a plurality of pairs of parent ions and daughter ions is selected from each kind of substance to be detected to ensure that the interference of interfering substances can be effectively removed, and therefore, the sensitivity of the detection and the accuracy of the qualitative and the quantitative degrees of the detection are improved.
Description
technical field [0001] The invention relates to a detection method, in particular to a detection method of 16 kinds of polycyclic aromatic hydrocarbons in fish and shrimp in aquatic products, purification and secondary mass spectrometry. Background technique [0002] Polycyclic aromatic hydrocarbons (Polycyclic Aromatic Hydrocarbons PAHs) are a large class of organic compounds containing two or more benzene rings in the molecule, and these benzene rings are arranged in linear, angular or clustered shapes. It is the first chemical carcinogen discovered and studied, and it belongs to the environmental organic persistent pollutants, including more than 150 compounds such as naphthalene, anthracene, phenanthrene, and pyrene. Polycyclic aromatic hydrocarbons are widely distributed in the natural environment, such as: air, water, sediment, soil, vegetables and animal tissues, etc., even when people heat indoors, cook or smoke, they will produce polycyclic aromatic hydrocarbons due...
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IPC IPC(8): G01N30/88G01N30/06
Inventor 陈子雷李慧冬霍鲁格丁蕊艳杜红霞王文博李瑞菊王峰恩吕潇
Owner INST OF QUALITY STANDARDS & TESTING TECH FOR AGRO PROD OF SHANDONG ACADEMY OF AGRI SCI