Chelating resin and ion exchange resin composition remove the method for traditional Chinese medicine heavy metal
A technology of ion exchange resin and resin composition, applied in separation methods, chemical instruments and methods, solid adsorbent liquid separation, etc., can solve the problems of large adsorption of active ingredients, large difference in adsorption selectivity of heavy metals and active ingredients, etc., achieve small changes
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Embodiment 1
[0048]Salvia miltiorrhiza 900g, Panax notoginseng 176g, extract according to the extraction process of compound Danshen dripping pill extract: water extraction 2 times, combine the extracts, add lead, cadmium, mercury, copper, arsenic standard solution to make the heavy metals in the medicinal materials exceed the standard by 5 times (that is, according to 5 times the standard limit of "Green Industry Standards for Import and Export of Medicinal Plants and Preparations" (combined with the extraction transfer rate and adding heavy metal elements) after modeling, it was divided into two parts, one as a control (blank), and the other as a 1~ Slowly pass through the pretreated D401-D405-D113 (1:1:1) mixed resin column (all resins are produced by Jiangsu Suqing Group) at a speed of 2BV / h (the volume ratio of resin dosage to extract solution is 2: 50), collect the effluent, concentrate the effluent and the control solution respectively, and obtain the extract, which is digested by mi...
Embodiment 2
[0054] Salvia miltiorrhiza 900g, Panax notoginseng 176g, extract according to the extraction process of compound Danshen dripping pill extract: water extraction 2 times, combine the extracts, add lead, cadmium, mercury, copper, arsenic standard solution to make the heavy metals in the medicinal materials exceed the standard by 5 times (that is, according to 5 times the standard limit of "Green Industry Standards for Import and Export of Medicinal Plants and Preparations" (combined with the extraction transfer rate and adding heavy metal elements) after modeling, it was divided into two parts, one as a control (blank), and the other as a 1~ Slowly pass through the pretreated D401-D405-D113 (1:1:1) mixed resin column (all resins are produced by Jiangsu Suqing Group) at a speed of 2BV / h (the volume ratio of resin dosage to extract solution is 2: 50), collect the effluent, concentrate the effluent and the control solution respectively, and precipitate with 70% alcohol respectively,...
Embodiment 3
[0064] Preparation of Liuwei Dihuang Pill Extract:
[0065] Moutan cortex 90g, wine cornus 40g, Rehmannia glutinosa 240g, Poria cocos 90g, Alisma 90g, add water to extract twice, each time for two hours, to get water decoction, divide into two parts, add lead, cadmium, mercury, copper, arsenic After the standard solution was used to build a model with 20 times the heavy metal exceeding the standard in medicinal materials, it was divided into two parts, one was used as a control (blank), and the other was used as a column to be passed through.
[0066] Preparation of D401-D405-D113 (1:1:1):
[0067] Take 35ml each of D401, D405 and D113 resins, mix them evenly, pack them into a column, first soak the resins with 7-8% NaCl solution of double the amount for more than 8 hours, then fill them with purified water until the effluent is clear and the conductivity is close, and then pass through Inject 3~4% HCl, the flow rate is 3~4BV / h, when the outlet pH is 1-2, stop feeding and soa...
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