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Method for measuring polycyclic aromatic hydrocarbons (PAHs) of sea water in flow injection chemiluminescence way

A chemiluminescence, polycyclic aromatic hydrocarbon technology, applied in chemiluminescence/bioluminescence, analysis by chemical reaction of materials, etc., can solve the problems of secondary pollution, high energy consumption, inability to work on site, etc., and achieve high-efficiency adsorption performance , good selectivity and high adsorption efficiency

Active Publication Date: 2014-09-10
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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Problems solved by technology

[0004] The invention provides a method for measuring polycyclic aromatic hydrocarbons in seawater by means of flow injection chemiluminescence, which can solve the existing problems of inability to work on site, long analysis duration, complicated analysis process, harsh conditions, and high energy consumption. Secondary pollution and other issues

Method used

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  • Method for measuring polycyclic aromatic hydrocarbons (PAHs) of sea water in flow injection chemiluminescence way
  • Method for measuring polycyclic aromatic hydrocarbons (PAHs) of sea water in flow injection chemiluminescence way

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[0034] see figure 1 with figure 2 , the inventive method comprises the following steps:

[0035](1) The three-way sampling valve 10 opens the water sample delivery channel, and the high-pressure infusion pump A6 transports the water sample to flow through the enrichment and elution column 10 behind the three-way sampling valve 9, and the interior of the enrichment and elution column 10 is filled with polysiloxane Activated carbon with crown ether composite coating and a temperature control device can efficiently and selectively enrich polycyclic aromatic hydrocarbons in water under suitable temperature conditions. Enrichment for 3 minutes;

[0036] (2) After the enrichment is completed, the three-way sampling valve 9 closes the water sample delivery channel, opens the eluent channel, and the n-hexane in the eluent supplier 7 is conveyed by the high-pressure infusion pump B8, and flows through the enrichment eluent column 10. The eluent elutes the enriched polycyclic aromat...

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Abstract

The invention provides a method for measuring polycyclic aromatic hydrocarbon (PAHs) of sea water in a flow injection chemiluminescence way. The method adopts the scheme that the PAHs of the sea water is quickly enriched and eluted in an enrichment and elution way; and a chemiluminescence signal is detected via a chemiluminescence system formed by super oxidized oxalate, hydrogen peroxide and the PAHs, so that the method for measuring the PAHs of the sea water in the flow injection chemiluminescence way is achieved. The method for measuring the PAHs of the sea water has characteristics of site operation, speediness, simplicity and sensitivity.

Description

technical field [0001] The invention relates to the technical field of environmental chemical monitoring, in particular to a method for measuring polycyclic aromatic hydrocarbons in seawater. Background technique [0002] Trace organic pollutants in seawater - polycyclic aromatic hydrocarbons (Polycyclic Aromatic Hydrocarbons, PAHs) have been included in the list of priority monitoring pollutants due to their persistence, bioaccumulation and long-distance transport characteristics, and are important for routine monitoring of marine water quality. parameter. Traditional methods mainly use large-scale equipment such as gas chromatography (GC), liquid chromatography-mass spectrometry (HPLC-MS) and gas chromatography-mass spectrometry (GC-MS). The samples need to be processed in the laboratory after complex pretreatment. for separation detection. Seawater samples have a complex matrix and high salinity, and the pretreatment process of the samples takes up more than 60% of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/76
Inventor 刘岩马然任国兴褚东志张颖颖高杨张述伟刘东彦张颖石小梅赵斌范萍萍吕靖曹璐邹涛张婷王洪亮曹煊汤永佐程岩侯广利
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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