Method for removing trace heavy metal mercury in honeysuckle flower extracting solution in situ

A technology of honeysuckle extract and trace heavy metals, which is applied in the field of traditional Chinese medicine processing and can solve problems such as little attention to hazards

Pending Publication Date: 2022-08-05
ZUNYI MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage is that although such methods pay attention to the change of traditional Chinese medicine components while paying attention to metal removal, they rarely pay attention to the harm of heavy metals with residual concentrations of ppm or ppb to the quality of traditional Chinese medicine and human health.

Method used

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  • Method for removing trace heavy metal mercury in honeysuckle flower extracting solution in situ
  • Method for removing trace heavy metal mercury in honeysuckle flower extracting solution in situ
  • Method for removing trace heavy metal mercury in honeysuckle flower extracting solution in situ

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Preparation of porous carbon material;

[0026] 1) Soft template method:

[0027] First melt 6.00g phenol, then mix 21.00mL formaldehyde solution (37%) and 90.00mL (0.1M) sodium hydroxide solution into a 250mL round-bottomed flask with a stopper, and react at 70°C for about 0.7h , to obtain a low-molecular-weight phenolic resin solution; then add 20 mL of an aqueous solution in which 0.80 g of triblock copolymer Pluronic F127 is dissolved into the aforementioned low-molecular-weight phenolic resin solution; Then, 50 mL of water was added under stirring to dilute the solution, and the reaction was continued. When solids were observed floating on the surface of the reaction solution, wait for a few minutes to stop the reaction. The reaction solution was allowed to stand until it was cooled to room temperature, the upper solid was taken out, and then dried to obtain a crude product; the obtained crude product was ground into powder, poured into a porcelain boat...

Embodiment 2

[0030] Example 2: Adsorption experiment;

[0031] Take the porous carbon and put it in a conical flask with a certain concentration of Hg(II) solution, and then fix it in a water-bath thermostatic oscillator for a certain period of time until the adsorption equilibrium. The obtained solution was treated by suction filtration, the filtrate was taken, the Hg (II) concentration was measured by ICP-MS (ThermoFisher, ICAP RQ), and the removal rate E (%) was calculated. Among them, the pH value of the solution is used at a concentration of 2 mol.L -1 HCl and 2mol.L -1 The calculation formula of the removal rate of Hg(II) by porous carbon is as follows:

[0032]

[0033] where C 0 and C e Indicates the initial concentration and adsorption equilibrium concentration of Hg(II) solution (mg.L -1 ).

Embodiment 3

[0034] Example 3: In-situ removal of mercury in honeysuckle extract by porous carbon materials;

[0035] Weigh about 1 g of honeysuckle, crush it, put it in a conical flask, add 50 mL of deionized water, ultrasonically extract for 30 min, cool to room temperature, suction filtration, pour the filtrate into a 100 mL volumetric flask, and then use deionized water to make up to the mark , Shake well to obtain honeysuckle extract, for use. Precisely weigh 5mg PC-1 or PC-4 and add it to 20mL honeysuckle extract, place it in a water bath constant temperature oscillator at 30°C and shake it for 420min and 30min, other conditions remain unchanged, the obtained solution is subjected to suction filtration treatment, and the filtrate is taken, The concentration was determined by ICP-MS, and the average value was taken in parallel for three times to calculate the removal rate.

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Abstract

A method for in-situ removal of trace heavy metal mercury in a honeysuckle extracting solution comprises the following steps: weighing about 1g of honeysuckle, crushing, filling in a conical flask, adding 50mL of deionized water, carrying out ultrasonic extraction for 30 minutes, cooling to room temperature, carrying out suction filtration, pouring filtrate into a 100mL volumetric flask, fixing the volume to a scale line by using deionized water, and uniformly shaking to obtain the honeysuckle extracting solution for later use; and precisely weighing 5mg of PC-1 or PC-4, adding the PC-1 or PC-4 into 20mL of the honeysuckle flower extracting solution, placing the honeysuckle flower extracting solution in a water bath constant-temperature oscillator at 30 DEG C, performing constant-temperature oscillation for 420 minutes and 30 minutes, keeping other conditions unchanged, and performing suction filtration treatment on the obtained solution to obtain the honeysuckle flower extracting solution with trace heavy metal content. According to the invention, the maximum adsorption efficiency can reach 96% and 99%; and the removal rates can reach 59% and 66% respectively.

Description

technical field [0001] The invention relates to a method for in-situ removal of trace heavy metal mercury in a honeysuckle extract, belonging to the technical field of traditional Chinese medicine processing. Background technique [0002] Chinese medicine researchers in my country have been committed to solving the problem that heavy metals endanger the quality of traditional Chinese medicines, including source environmental protection, regional improvement, planting specifications, and processing optimization. The effective removal of heavy metals during the extraction and processing of traditional Chinese medicine is one of the most effective methods at present. At present, the common methods for selective removal of heavy metals in traditional Chinese medicine during the extraction and processing of traditional Chinese medicine include biochemical methods and physical chemistry methods. Among them, biochemical methods remove heavy metals through flocculation and adsorpt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D36/00B01D35/16B01L7/00
CPCB01D36/008B01D36/006B01D35/16B01L7/00Y02P10/20
Inventor 余明张建永袁晓艳鲁文洁何清田林庞焜
Owner ZUNYI MEDICAL UNIVERSITY
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