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Method for solid phase extraction of benzo(a)pyrene in water by means of super-high performance liquid/triple quadrupole tandem mass spectrum

A triple quadrupole and ultra-high performance liquid phase technology, applied in the field of water quality detection, can solve the problems that are difficult to meet the sensitivity, qualitative and quantitative problems at the same time, and achieve the effect of high sensitivity, good reproducibility and easy operation

Inactive Publication Date: 2013-04-17
JIANGSU ENVIRONMENTAL MONITORING CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problem that the detection method of benzo(a)pyrene in water in the prior art is difficult to meet the detection requirements of sensitivity, qualitative and quantitative at the same time, the present invention provides a solid-phase A method for extracting benzo(a)pyrene in water, the method is easy to operate, and the detection is fast, the result is high sensitivity, accuracy and reproducibility

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  • Method for solid phase extraction of benzo(a)pyrene in water by means of super-high performance liquid/triple quadrupole tandem mass spectrum
  • Method for solid phase extraction of benzo(a)pyrene in water by means of super-high performance liquid/triple quadrupole tandem mass spectrum
  • Method for solid phase extraction of benzo(a)pyrene in water by means of super-high performance liquid/triple quadrupole tandem mass spectrum

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Embodiment 1

[0049] In this embodiment, a method for solid-phase extraction of benzo(a)pyrene in water by using ultra-high performance liquid phase / triple quadrupole tandem mass spectrometry, the specific steps are:

[0050] (1) Standard curve drawing

[0051] Benzo[α]pyrene stock solution (20mg / L, prepared by mixing methanol:dichloromethane at a volume ratio of 1:1) was diluted with mobile phase (acetonitrile:water volume ratio 1:1) to 1.0, 5.0, 10.0, 20.0, 50.0, 100.0 (μg / L) series of standard solutions, draw a standard curve.

[0052] (2) Sample collection and pretreatment

[0053]Use a 1L cleaned glass sampling bottle to collect 1L surface water samples, add sodium sulfite, adjust the pH to ≤2 with hydrochloric acid, and store in a refrigerator at 4°C.

[0054] Take 500 mL of water sample and filter it through a 0.45 μm filter membrane under reduced pressure. filtrate through C 18 Reverse phase solid phase extraction cartridges. C 18 The reversed-phase solid-phase extraction colu...

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Abstract

The invention discloses a method for solid phase extraction of benzo(a) pyrene in water by means of super-high performance liquid / triple quadrupole tandem mass spectrum, and belongs to the field of water quality detection. The method disclosed by the invention comprises the following steps: (1) a standard curve is plotted; (2) a sample is collected and is pre-treated; (3) the standard solution obtained in the step (2) is analyzed in specified conditions; and (4) the mass spectrometry is carried out. The method is used for solid phase extraction of benzo(a)pyrene in water by means of super-high performance liquid / triple quadrupole tandem mass spectrum, and has the advantages of simplicity and convenience in operation, rapidness in detection, high result sensitivity, accurate result and good reproducibility.

Description

technical field [0001] The invention belongs to the field of water quality detection, and more specifically relates to a method for solid-phase extraction of benzo(a)pyrene in water by using ultra-high performance liquid phase / triple quadrupole tandem mass spectrometry. Background technique [0002] Benzo[α]pyrene (Benzo(a)pyrene), smoked food, baked food, fried food or coal tar, various types of carbon black and coal, petroleum, etc. Main toxins and carcinogens in exhaust gas, as well as in coking, oil refining, asphalt, plastic and other industrial wastewater. Benzo[α]pyrene in surface water mainly comes from rainwater washing the atmosphere in addition to industrial sewage, which belongs to polycyclic aromatic hydrocarbons (PAHs). Benzo[α]pyrene is the most important environmental and food pollutant among more than 200 kinds of polycyclic aromatic hydrocarbons that have been discovered, and the pollution is widespread, the amount of pollution is large, and the carcinogen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88G01N30/72G01N30/08
Inventor 赵永刚唐松林张蓓蓓章勇
Owner JIANGSU ENVIRONMENTAL MONITORING CENT