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Magnetic effervescent tablet based on magnetic graphene oxide and preparation method thereof

A technology of oxidized stones and effervescent tablets, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve problems such as eye, kidney and liver damage, teratogenicity, mutagenicity, carcinogenicity, etc., and achieve a simple preparation method Reliable, stable properties, obvious magnetic effect

Pending Publication Date: 2022-01-28
连云港隆晟医药有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-term exposure to PAHs can easily cause damage to the eyes, kidneys and liver. In addition, polycyclic aromatic hydrocarbons also have serious toxicological effects such as mutagenesis, carcinogenicity, teratogenicity and gene mutation.

Method used

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  • Magnetic effervescent tablet based on magnetic graphene oxide and preparation method thereof
  • Magnetic effervescent tablet based on magnetic graphene oxide and preparation method thereof
  • Magnetic effervescent tablet based on magnetic graphene oxide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of a magnetic effervescent tablet based on magnetic graphene oxide, comprising the steps of:

[0029] (1) Prepare the solution: take appropriate amount of 3,4-benzopyrene (BaP) and anthracene (Ant) standard substances, weigh them accurately, place them in 10mL brown volumetric flasks, dilute with methanol, and prepare them to a concentration of 1 mg mL -1 Store the standard stock solution at 4 °C in the dark, dilute the stock solution with methanol, and dilute to the required concentration step by step before use.

[0030] (2) Collection and preparation of samples: Environmental water was collected from the local suburbs, and the water samples were filtered through a 0.45 μm syringe filter membrane, and placed in a 4 °C refrigerator for later use. A 5 mL water sample was taken, and 100 μL of BaP or Ant standard stock solution were added respectively for subsequent analysis.

[0031] (3) Synthesis of magnetic graphene oxide: Add 0.5 g of graphene ox...

Embodiment 2

[0035] Example 2 Screening the composition of magnetic effervescent tablets is an experimental study

[0036] 1. Taking the removal amount of two kinds of PAHs as indicators, by image 3 Determine the composition of effervescent tablets, including (a) select magnetic graphene oxide as the adsorption material; (b) select 10 mg, which has a better removal effect and a small amount of material, as the amount of adsorption material; (c) select 1-octyl-3 -Methylimidazolium chloride salt was used as the ionic liquid; (d) 30 μL was selected as the dosage of the ionic liquid; (e) lithium bistrifluoromethanesulfonylimide was selected as the ion exchanger; All exchangers should exist in the composition to be the best.

[0037] 2. Investigate the conditions of the adsorption-elution process, taking the removal amount of two PAHs as indicators, by Figure 4 The adsorption-elution process conditions were clarified, including (a) choosing pH = 7 as the matrix pH; (b) choosing acetone as t...

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Abstract

The invention discloses a magnetic effervescent tablet based on magnetic graphene oxide and a preparation method thereof. The method comprises the following steps: (1) carrying out magnetizing modification on graphene oxide by utilizing ferric chloride and ferrous chloride aqueous solutions to obtain magnetic graphene oxide; and (2) synthesizing a magnetic effervescent tablet with citric acid, sodium bicarbonate, 1-octyl-3-methylimidazolium chloride and lithium bis (trifluoromethane sulfonimide) by using an effervescent micro-extraction technology and taking the magnetic graphene oxide as a magnetic solid-phase extraction adsorbent; and (3) verifying the polycyclic aromatic hydrocarbon removal effect of the magnetic effervescent tablet by using a fluorescence spectrophotometric method. The preparation method and application of the magnetic effervescent tablet have the advantages of simplicity in operation, high accuracy, good sensitivity, good environmental friendliness and the like, and can be used for removing polycyclic aromatic hydrocarbons such as 4-benzopyrene, anthracene and the like.

Description

technical field [0001] The invention belongs to the field of detection and removal of pollutants in water, and relates to a preparation method of a magnetic effervescent tablet based on magnetic graphene oxide and its application in the removal of polycyclic aromatic hydrocarbons. Background technique [0002] Effervescent tablet-assisted microextraction (ETE), also known as effervescent tablet-assisted microextraction, has been introduced as a new solvent-free dispersion technique. This technology promotes phase homogenization by adding proton donors and carbon sources to the matrix to form bubbles in situ, replacing the use of dispersing solvents and auxiliary extraction methods such as ultrasound and vortex. Effervescent microextraction can add a variety of extractants, such as ionic liquids, nanomaterials, etc., or combine proton donors, carbon sources, and extractants into extraction devices or effervescent tablets to achieve the purpose of easy operation. At present, ...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/22B01J20/24C02F1/68C01B32/198
CPCB01J20/20B01J20/223B01J20/24B01J20/22C02F1/68C01B32/198B01J2220/4806B01J2220/4812
Inventor 高珣池苗苗秦昆明赵龙山
Owner 连云港隆晟医药有限公司
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