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An Adsorbent Material for Collecting Polar Organic Pollutants in Passive Sampling of Water Environment

An adsorption material, passive sampling technology, applied in water pollutants, water/sewage treatment, adsorbed water/sewage treatment, etc., can solve the problem of low adsorption efficiency, increase porosity, efficiently adsorb polar organic pollutants, moisturizing effect

Active Publication Date: 2020-11-20
WM ENVIRONMENTAL MOLECULAR DIAGNOSIS CHANGSHU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The present invention aims at the technical problem that the macroporous adsorption resin XAD-7 in the prior art has low adsorption efficiency when collecting polar organic matter in environmental water bodies, and provides a method for collecting polar organic matter in passive sampling of water environment. Adsorbent material for pollutants

Method used

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  • An Adsorbent Material for Collecting Polar Organic Pollutants in Passive Sampling of Water Environment
  • An Adsorbent Material for Collecting Polar Organic Pollutants in Passive Sampling of Water Environment
  • An Adsorbent Material for Collecting Polar Organic Pollutants in Passive Sampling of Water Environment

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Embodiment

[0039] (1) Take 100 grams of macroporous adsorption resin XAD-7 resin, put it in a beaker, soak it for 15 minutes with 5 times the mass of methanol-water mixed solution with a volume ratio of 1:1. The immersion process is completed in a constant temperature air bath oscillator, the oscillation temperature is set at 25 degrees Celsius, and the oscillation frequency is 100 rpm, so that the macroporous adsorption resin XAD-7 can fully contact with the methanol-water mixed solution.

[0040] (2) Let stand for 5 minutes and absorb the upper liquid. Re-inject 5 times the mass of methanol-water mixed solution with a volume ratio of 1:1, and repeat the above process for a total of 3 times to obtain the modified macroporous adsorption resin XAD-7;

[0041] (3) Place the above-mentioned macroporous adsorption resin XAD-7 in a constant temperature oven at 50 degrees Celsius, and dry to constant weight.

[0042] In order to verify the adsorption performance of the modified macroporous ad...

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Abstract

The invention belongs to the technical field of adsorbent materials, and specifically relates to an adsorbent material for colleting polar organic pollutants during water environment passive sampling.The adsorbent material is prepared according to the following steps: (1) in a constant temperature air bath oscillator, taking macroporous resin XAD-7 to be soaked in a methyl alcohol and water mixedsolution for sufficient contact; (2) after standing, adsorbing an upper liquid, injecting the methyl alcohol and water mixed solution again, and repeating the soaking process to obtain modified macroporous resin XAD-7; and (3) drying the obtained macroporous resin XAD-7 until constant weight. Modification is carried out by using the methyl alcohol and water mixed solution with specific content, and the macroporous resin XAD-7 can be of stronger polar groups, so that the collection problem of the polar organic pollutants in a water environment is solved. The invention also establishes a suit of matched elution optimization conditions, so that sampling and monitoring for the polar organic pollutants inside the water environment can be realized completely and efficiently.

Description

technical field [0001] The invention belongs to the technical field of adsorption materials, and in particular relates to an adsorption material used for collecting polar organic pollutants in passive sampling of water environment. Background technique [0002] In environmental passive sampling technology, choosing the right adsorbent material is a key. Generally speaking, the adsorption materials used in passive samplers need to have the following properties: [0003] (1) It has the ability to efficiently adsorb or coordinate the target pollutants, so as to ensure the rapid enrichment of the target pollutants within a certain period of time. [0004] (2) The adsorption capacity for target pollutants is stable, and desorption will not occur when the concentration of target pollutants in the water body drops sharply. [0005] (3) Under specific elution conditions, most of the adsorbed target pollutants can be quickly desorbed to make subsequent detection possible. [0006]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/30
CPCB01J20/262C02F1/288C02F2101/30
Inventor 鱼敏坚
Owner WM ENVIRONMENTAL MOLECULAR DIAGNOSIS CHANGSHU CO LTD
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