CN101995405A - Method for fast measuring sulphitation Chinese medicinal materials - Google Patents
Method for fast measuring sulphitation Chinese medicinal materials Download PDFInfo
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Abstract
The invention provides a method for fast measuring sulphitation Chinese medicinal materials. The method is characterized by comprising the following steps of: firstly preparing a standard sodium sulfite solution; removing 0-10 ml of the 0.0001-0.001% standard sodium sulfite solution by using a pipette, and placing into a reaction bulb; adding water, and then adding 2-3 grams of zinc granules; adding 5-8 ml of hydrochloric acid solutions, 5-10 ml of brand-new potassium iodide solutions and 5-10 drops of acidic stannous chloride, and immediately plugging an arsenic measuring tube previously loaded with lead acetate test paper; standing at 40-50 DEG C for 1-1.5 hours to obtain lead sulphide spots with different concentrations; taking out the lead acetate test paper; and detecting the sulphur content of a sample according to the shade of the colors of the lead sulphide spots. The invention has the advantages of fast detection, low cost, convenience in use and fast measurement of a large amount of residual sulphur, sulphur dioxide and sulphates in various valence states, which are contained in the Chinese medicinal materials; the invention can effectively control the harm of harmful substances contained in the Chinese medicinal materials on human, thereby ensuring the life safety of human; and in addition, the method is convenient for popularization and application.
Description
Technical field
The present invention relates to a kind of mensuration stove drying method, particularly a kind of method of fast measuring stove drying Chinese crude drug.
Background technology
Owing to the kind difference, some medicinal material needs drying in the processing of Chinese crude drug in present China, but the dry difficulty of the kind that has, so at source carry out drying so that preserve with stove drying.But this in recent years method has become unique job operation of some Chinese crude drug in the producing region of medicinal material.Some medicinal material also carries out a large amount of stove dryings in order to improve outward appearance, makes the sulfate of a large amount of residual sulphurs, sulphuric dioxide and each valence state in the Chinese crude drug.These residuals are known from experience a lot of harm of generation to the people.The main method that detects sulphuric dioxide, sulphite at present has spectrophotometric method, fluorophotometric method, chemoluminescence method, galvanochemistry and sensor method, spectroscopic methodology, chromatography, iodimetric titration, blank to subtract poor method, plant detection method, these methods, most more complicated, need the long period, the cost height is not suitable for fast detecting when participating in the cintest.
Summary of the invention
The objective of the invention is the deficiency that exists in the above-mentioned technology, a kind of method of fast measuring stove drying Chinese crude drug is provided.Not only check the speed piece, and cost is low, uses also very convenient.
The object of the present invention is achieved like this: comprise sodium sulphite, zinc granule, sodium sulphite, potassium iodide, the inferior tin of acid chlorization, it is characterized in that, at first prepare the sodium sulphite standard solution, (by volume) precision takes by weighing sodium sulphite 0.1-0.2g, to the 100ml measuring bottle, add water to scale, get 0.1-0.2% solution.Accurate again the absorption in 0.1-0.2% solution 1ml to the 100ml measuring bottle adds water to scale, gets 0.001-0.002% solution.The accurate absorption in 0.001-0.002% solution 10ml to the 100ml volumetric flask adds water to scale, dilute 0.0001-0.0002% sodium sulphite standard solution.
Its principle is that under the acid condition, zinc and sulphite react produces sulfuretted hydrogen, sulfuretted hydrogen and moistening lead acetate reaction production vulcanized lead precipitation, the spot of generation vulcanized lead.The spot of the shade of spot and sodium sulphite titer generation is compared per sample, thereby determines the sulfur content of sample.
Select ancient Cai Shi reaction bulb for use, with the mouth of pipe of glass cap at arsenic detecting tube, circular hole is coincide mutually, the lead acetate paper that therebetween one is wetting is fixed glass cap and arsenic detecting tube with rubber band or other suitable ways.Fill 2～4cm absorbent cotton in the pipe.
The preparation of working sample contrast solution: pipette sodium sulphite standard solution 0,1,5, the 10ml of 0.0001-0.0002% with transfer pipet, the sodium sulphite standard solution 5 of 0.001-0.002%, 10ml are placed on respectively in No. 1 reaction bulb.Add water 10,9,5,0,5,0ml respectively, add zinc granule 2-3g, hydrochloric acid solution 5-8ml, new system liquor kalii iodide 5-10 ml, the inferior tin 5-10 of acid chlorization drip, the arsenic detecting tube of lead acetate paper is housed immediately beyond the Great Wall in advance, place the vulcanized lead spot that 1-1.5h obtains variable concentrations in 40-50 ℃, take out lead acetate paper, can carry out semiquantitative determination to the sulfur content of measuring in the product according to the shade of spot.
Measure the medicinal material sulfur content according to the following steps: get traditional Chinese medicinal material samples and pulverize, cross sieve No. 2, precision takes by weighing 1-2g in the 150ml conical flask, adds ethanol 15-20ml, weighs, and ultrasonic Extraction 30min cools, and supplies weight, filters, and must measure product solution.Get the product of mensuration solution 2ml, join in the ancient Cai Shi reaction bulb, add water 20ml, add zinc granule 2g, hydrochloric acid solution 5-10ml, new system liquor kalii iodide 5-10 ml, the inferior tin 5-10 of acid chlorization drip, and the arsenic detecting tube of Lead acetate paper is housed immediately beyond the Great Wall in advance, place 1-1.5h in 40-50 ℃ of water-bath, get the vulcanized lead spot.Shade according to spot is determined content with the comparison of contrast spot.
The invention has the beneficial effects as follows, check speed piece, cost is low, and is easy to use, can measure the sulfate of a large amount of residual sulphurs, sulphuric dioxide and each valence state that exist in the Chinese crude drug fast.Can effectively control of the infringement of the objectionable impurities of Chinese crude drug existence, guarantee human life security the people.Easy to utilize.
Description of drawings:
Fig. 1 is a sodium sulphite standard solution vulcanized lead spot linear graph
Fig. 2 is honeysuckle 6 batch sample vulcanized lead spot collection of illustrative plates
Fig. 3 is the structural representation of ancient Cai Shi reaction bulb
Fig. 4 is the decomposition texture synoptic diagram of ancient Cai Shi reaction bulb
Embodiment:
The present invention will be further described below in conjunction with embodiment;
Embodiment one:
At first prepare the sodium sulphite standard solution, (by volume) precision takes by weighing sodium sulphite 0.1-0.2g, to the 100ml measuring bottle, adds water to scale, gets 0.1-0.2% solution.Accurate again the absorption in 0.1-0.2% solution 1ml to the 100ml measuring bottle adds water to scale, gets 0.001-0.002% solution.The accurate absorption in 0.001-0.002% solution 10ml to the 100ml volumetric flask adds water to scale, dilute 0.0001-0.0002% sodium sulphite standard solution.
Select ancient Cai Shi reaction bulb for use, with the mouth of pipe of glass cap at arsenic detecting tube, circular hole is coincide mutually, the lead acetate paper that therebetween one is wetting is fixed glass cap and arsenic detecting tube with rubber band or other suitable ways.Fill 2～4cm absorbent cotton in the pipe.
Pipette sodium sulphite standard solution 0,1,5, the 10ml of 0.0001-0.0002% with transfer pipet, the sodium sulphite standard solution 5 of 0.001-0.002%, 10ml are placed on respectively in No. 1 reaction bulb.Add water 10,9,5,0,5,0ml respectively, add zinc granule 2-3g, hydrochloric acid solution 5-8ml, new system liquor kalii iodide 5-10 ml, the inferior tin 5-10 of acid chlorization drip, the arsenic detecting tube of lead acetate paper is housed immediately beyond the Great Wall in advance, place the vulcanized lead spot that 1-1.5h obtains variable concentrations in 40-50 ℃, take out lead acetate paper, can carry out semiquantitative determination to the sulfur content in the test sample according to the shade of spot.
Measure the medicinal material sulfur content according to the following steps: get traditional Chinese medicinal material samples and pulverize, cross sieve No. 2, precision takes by weighing 1-2g in the 150ml conical flask, adds ethanol 15-20ml, weighs, and ultrasonic Extraction 30min cools, and supplies weight, filter, need testing solution.Get need testing solution 2ml, join in the ancient Cai Shi reaction bulb, add water 20ml, add zinc granule 2g, hydrochloric acid solution 5-10ml, new system liquor kalii iodide 5-10 ml, the inferior tin 5-10 of acid chlorization drip, and the arsenic detecting tube of Lead acetate paper is housed immediately beyond the Great Wall in advance, place 1-1.5h in 40-50 ℃ of water-bath, get the vulcanized lead spot.Shade according to spot is determined content with the comparison of contrast spot.
Embodiment two: at first prepare the sodium sulphite standard solution, (by volume) precision takes by weighing sodium sulphite 0.1g, to the 100ml measuring bottle, adds water to full scale, gets 0.1% solution.The accurate again 0.1% solution 1ml of absorption places in the 100ml measuring bottle, adds water to full scale, gets 0.001% solution.The accurate absorption in the 0.001% solution 10ml 100ml volumetric flask adds water to scale, dilute 0.0001 sodium sulphite standard solution.
Select ancient Cai Shi reaction bulb for use, with the mouth of pipe of glass cap at arsenic detecting tube, circular hole is coincide mutually, the lead acetate paper that therebetween one is wetting is fixed glass cap and arsenic detecting tube with rubber band or other suitable ways.Fill 4cm absorbent cotton in the pipe.
Pipette 0.0001% sodium sulphite standard solution 5ml with transfer pipet, 0.001% sodium sulphite standard solution 5, ml are placed on respectively in No. 1 reaction bulb.Add water 5ml respectively, add zinc granule 2g, hydrochloric acid solution 5ml, 5 in new system liquor kalii iodide 5ml, the inferior tin of acid chlorization, the arsenic detecting tube of lead acetate paper is housed immediately beyond the Great Wall in advance, place the vulcanized lead spot that 1h obtain variable concentrations in 40 ℃, take out lead acetate paper, can carry out semiquantitative determination to the sulfur content of measuring in the product according to the shade of spot.
Measure the medicinal material sulfur content according to the following steps: get traditional Chinese medicinal material samples and pulverize, cross sieve No. 2, precision takes by weighing 1g in the 150ml conical flask, adds ethanol 15ml, weighs, and ultrasonic Extraction 30min cools, and filters, and must measure product solution.Get the product of mensuration solution 2ml, join in the ancient Cai Shi reaction bulb, add water 20ml, add zinc granule 2g, hydrochloric acid solution 5ml, 5 in new system liquor kalii iodide 5 ml, the inferior tin of acid chlorization, the arsenic detecting tube of Lead acetate paper is housed immediately beyond the Great Wall in advance, places 1h, get the vulcanized lead spot in 40 ℃ of water-baths.Shade according to spot is determined content with the comparison of contrast spot.
Embodiment three:
At first prepare the sodium sulphite standard solution, (by volume) precision takes by weighing sodium sulphite 0.15ml and is placed on to the measuring bottle of 100ml volume, adds water to full scale, gets 0.15% solution.Accurate again the absorption in 0.15% solution 1ml to the 100ml measuring bottle adds water to full scale, gets 0.015% solution.The accurate 0.015% solution 10ml that draws is placed in the 100ml volumetric flask, adds water to full scale, dilute 0.0015 sodium sulphite standard solution.
Select ancient Cai Shi reaction bulb for use, with the mouth of pipe of glass cap at arsenic detecting tube, circular hole is coincide mutually, the lead acetate paper that therebetween one is wetting is fixed glass cap and arsenic detecting tube with rubber band or other suitable ways.Fill 2～4cm absorbent cotton in the pipe.
Pipette 0.0015% sodium sulphite standard solution 5ml with transfer pipet, 0.015% sodium sulphite standard solution 5ml is placed on respectively in No. 1 reaction bulb.Add water 9ml, add zinc granule 2-3g, hydrochloric acid solution 5ml, 5 in new system liquor kalii iodide 5 ml, the inferior tin of acid chlorization, the arsenic detecting tube of lead acetate paper is housed immediately beyond the Great Wall in advance, place the vulcanized lead spot that 1h obtains variable concentrations in 40-50 ℃, take out lead acetate paper, can be according to the shade of spot to the sulfur content property the advanced semiquantitative determination in the test sample.
Measure the medicinal material sulfur content according to the following steps: get traditional Chinese medicinal material samples and pulverize, cross sieve No. 2, precision takes by weighing the 1g medicinal material and is placed in the 150ml conical flask, adds ethanol 15ml, weighs, and ultrasonic Extraction 30min cools, and filters, and must measure product solution.Get the product of mensuration solution 2ml, join in the ancient Cai Shi reaction bulb, add water 20ml, add zinc granule 2g, hydrochloric acid solution 5ml, 5 in new system liquor kalii iodide 5ml, the inferior tin of acid chlorization, the arsenic detecting tube of Lead acetate paper is housed immediately beyond the Great Wall in advance, places 1h, get the vulcanized lead spot in 45 ℃ of water-baths.Shade according to spot is determined content with the comparison of contrast spot.
Embodiment four:
At first prepare the sodium sulphite standard solution, (by volume) precision takes by weighing sodium sulphite 0.2g, to the 100ml measuring bottle, adds water to full scale, gets 0.2% solution.Accurate again the absorption in 0.2% solution 1ml to the 100ml measuring bottle adds water to scale, gets 0.002% solution.The accurate absorption in 0.002% solution 10ml to the 100ml volumetric flask adds water to full scale, dilutes 0.0002% sodium sulphite standard solution.
Select ancient Cai Shi reaction bulb for use, with the mouth of pipe of glass cap at arsenic detecting tube, circular hole is coincide mutually, the lead acetate paper that therebetween one is wetting is fixed glass cap and arsenic detecting tube with rubber band or other suitable ways.Fill 2cm absorbent cotton in the pipe.
Pipette 0.0002% sodium sulphite standard solution 10ml with transfer pipet, 0.002% sodium sulphite standard solution 10ml is placed on respectively in No. 1 reaction bulb.Add water 10, ml respectively, add zinc granule 2-3g, hydrochloric acid solution 8ml, 10 in new system liquor kalii iodide 10 ml, the inferior tin of acid chlorization, the arsenic detecting tube of lead acetate paper is housed immediately beyond the Great Wall in advance, place the vulcanized lead spot that 1.5h obtain variable concentrations in 50 ℃, take out lead acetate paper, can be according to the shade of spot to measuring the sulfur content property the advanced semiquantitative determination in the product.
Measure the medicinal material sulfur content according to the following steps: get traditional Chinese medicinal material samples and pulverize, cross sieve No. 2, precision takes by weighing 2g in the 150ml conical flask, adds ethanol 20ml, weighs, and ultrasonic Extraction 30min cools, and filters, and must measure product solution.Get the product of mensuration solution 2ml, join in the ancient Cai Shi reaction bulb, add water 20ml, add zinc granule 2g, hydrochloric acid solution 10ml, 10 in the inferior tin of new system liquor kalii iodide 10 ml, acid chlorization is equipped with the arsenic detecting tube of Lead acetate paper immediately beyond the Great Wall in advance, place 1.5h in 50 ℃ of water-baths, get the vulcanized lead spot.Shade according to spot is determined content with the comparison of contrast spot.
Claims (4)
1. the method for a fast measuring stove drying Chinese crude drug, comprise sodium sulphite, zinc granule, sodium sulphite, potassium iodide, the inferior tin of acid chlorization, it is characterized in that, at first prepare the sodium sulphite standard solution, (by volume) precision takes by weighing sodium sulphite 0.1-0.2g, to the 100ml measuring bottle, add water to scale, get 0.1-0.2% solution, accurate again the absorption in 0.1-0.2% solution 1ml to the 100ml measuring bottle adds water to scale, get 0.001-0.002% solution, the accurate absorption in 0.001-0.002% solution 10ml to the 100ml volumetric flask adds water to scale, dilute 0.0001-0.0002% sodium sulphite standard solution;
The product of measuring with the preparation method of contrast solution are: pipette sodium sulphite standard solution 0,1,5, the 10ml of 0.0001-0.0002% with transfer pipet, the sodium sulphite standard solution 5 of 0.001-0.002%, 10ml are placed on respectively in No. 1 reaction bulb; Add water 10,9,5,0,5,0ml respectively, add zinc granule 2-3g, hydrochloric acid solution 5-8ml, new system liquor kalii iodide 5-10 ml, the inferior tin 5-10 of acid chlorization drip, the arsenic detecting tube of lead acetate paper is housed immediately beyond the Great Wall in advance, place the vulcanized lead spot that 1-1.5h obtains variable concentrations in 40-50 ℃, take out lead acetate paper, can the sulfur content in the test sample be detected according to the shade of spot;
Select ancient Cai Shi reaction bulb for use, with the mouth of pipe of glass cap at arsenic detecting tube, circular hole is coincide mutually, the lead acetate paper that therebetween one is wetting is fixed glass cap and arsenic detecting tube with rubber band or other suitable ways, fills 2～4cm absorbent cotton in the pipe;
Carry out according to the following steps when medicinal material is measured: get traditional Chinese medicinal material samples and pulverize, cross sieve No. 2, precision takes by weighing 1-2g in the 150ml conical flask, add ethanol 15-20ml, weigh, ultrasonic Extraction 30min cools, supply weight and subtract weight loss, filter, get medicinal material and measure test sample solution, get test sample solution 2ml, join in the ancient Cai Shi reaction bulb, add water 20ml, add zinc granule 2g, hydrochloric acid solution 5-10ml, new system liquor kalii iodide 5-10 ml, the inferior tin 5-10 of acid chlorization drips, and the arsenic detecting tube of Lead acetate paper is housed immediately beyond the Great Wall in advance, places 1-1.5h in 40-50 ℃ of water-bath, get the vulcanized lead spot, determine content according to the shade and the comparison of contrast spot of spot.
2. the method for a kind of fast measuring stove drying Chinese crude drug according to claim 1 is characterized in that, at first prepares the sodium sulphite standard solution, precision takes by weighing sodium sulphite 0.1g, to the 100ml measuring bottle, add water to full scale, get 0.1% solution, the accurate again 0.1% solution 1ml of absorption places in the 100ml measuring bottle, add water to full scale, get 0.001% solution, the accurate absorption in the 0.001% solution 10ml 100ml volumetric flask, add water to scale, dilute 0.0001 sodium sulphite standard solution;
Select ancient Cai Shi reaction bulb for use, with the mouth of pipe of glass cap at arsenic detecting tube, circular hole is coincide mutually, filling 4cm absorbent cotton in the pipe fixed glass cap and arsenic detecting tube with rubber band or other suitable ways by the lead acetate paper that therebetween one is wetting;
Pipette 0.0001% sodium sulphite standard solution 5ml with transfer pipet, 0.001% sodium sulphite standard solution 5ml is placed on respectively in No. 1 reaction bulb, add water 5ml respectively, add zinc granule 2g, hydrochloric acid solution 5ml, new system liquor kalii iodide 5ml, 5 in the inferior tin of acid chlorization, the arsenic detecting tube of lead acetate paper is housed immediately beyond the Great Wall in advance, place the vulcanized lead spot that 1h obtains variable concentrations in 40 ℃, take out lead acetate paper, can carry out semiquantitative determination to the sulfur content of measuring in the product according to the shade of spot;
Measure the medicinal material sulfur content according to the following steps: get traditional Chinese medicinal material samples and pulverize, cross sieve No. 2, precision takes by weighing 1g in the 150ml conical flask, adds ethanol 15ml, weigh, ultrasonic Extraction 30min cools, and filters, must measure product solution, get the product of mensuration solution 2ml, join in the ancient Cai Shi reaction bulb, add water 20ml, add zinc granule 2g, hydrochloric acid solution 5ml, new system liquor kalii iodide 5 ml, 5 in the inferior tin of acid chlorization, the arsenic detecting tube of Lead acetate paper is housed immediately beyond the Great Wall in advance, place 1h in 40 ℃ of water-baths, get the vulcanized lead spot, determine content according to the shade and the comparison of contrast spot of spot.
3. the method for a kind of fast measuring stove drying Chinese crude drug according to claim 1, at first prepare the sodium sulphite standard solution, precision takes by weighing sodium sulphite 0.15g and is placed on to the measuring bottle of 100ml volume, adds water to full scale, gets 0.15% solution, accurate again the absorption in 0.15% solution 1ml to the 100ml measuring bottle, add water to full scale, get 0.0015% solution, the accurate 0.015% solution 10ml that draws is placed in the 100ml volumetric flask, add water to full scale, dilute 0.00015 sodium sulphite standard solution;
Select ancient Cai Shi reaction bulb for use, with the mouth of pipe of glass cap at arsenic detecting tube, circular hole is coincide mutually, filling 3cm absorbent cotton in the pipe fixed glass cap and arsenic detecting tube with rubber band or other suitable ways by the lead acetate paper that therebetween one is wetting;
Pipette 0.00015% sodium sulphite standard solution 0,1,5,10ml with transfer pipet, the sodium sulphite standard solution 5 of 0.001-0.002%, 10ml are placed on respectively in No. 1 reaction bulb; Add water 10,9,5,0,5,0ml respectively, add zinc granule 2-3g, hydrochloric acid solution 5ml, 5 in new system liquor kalii iodide 5 ml, the inferior tin of acid chlorization, the arsenic detecting tube of lead acetate paper is housed immediately beyond the Great Wall in advance, place the vulcanized lead spot that 1h obtain variable concentrations in 45 ℃, take out lead acetate paper, can be according to the shade of spot to the sulfur content property the advanced semiquantitative determination in the test sample;
Measure the medicinal material sulfur content according to the following steps: get traditional Chinese medicinal material samples and pulverize, cross sieve No. 2, precision takes by weighing the 1g medicinal material and is placed in the 150ml conical flask, adds ethanol 15ml, weighs, ultrasonic Extraction 30min, cool, filter, must measure product solution, get the product of mensuration solution 2ml, join in the ancient Cai Shi reaction bulb, add water 20ml, add zinc granule 2g, hydrochloric acid solution 5ml, new system liquor kalii iodide 5ml, 5 in the inferior tin of acid chlorization is equipped with the arsenic detecting tube of Lead acetate paper immediately beyond the Great Wall in advance, places 1h in 45 ℃ of water-baths, get the vulcanized lead spot, determine content according to the shade and the comparison of contrast spot of spot.
4. the method for a kind of fast measuring stove drying Chinese crude drug according to claim 1, at first prepare the sodium sulphite standard solution, precision takes by weighing sodium sulphite 0.2g, to the 100ml measuring bottle, add water to full scale, get 0.2% solution, accurate again the absorption in 0.2% solution 1ml to the 100ml measuring bottle adds water to scale, get 0.002% solution, the accurate absorption in 0.002% solution 10ml to the 100ml volumetric flask adds water to full scale, dilutes 0.0002% sodium sulphite standard solution;
Select ancient Cai Shi reaction bulb for use, with the mouth of pipe of glass cap at arsenic detecting tube, circular hole is coincide mutually, filling 2cm absorbent cotton in the pipe fixed glass cap and arsenic detecting tube with rubber band or other suitable ways by the lead acetate paper that therebetween one is wetting;
Pipette 0.0002% sodium sulphite standard solution 0,1,5,10ml with transfer pipet, 0.002% sodium sulphite standard solution 5,10ml are placed on respectively in No. 1 reaction bulb; Add water 10,9,5,0,5,0ml respectively, add zinc granule 2-3g, hydrochloric acid solution 8ml, 10 in new system liquor kalii iodide 10 ml, the inferior tin of acid chlorization, the arsenic detecting tube of lead acetate paper is housed immediately beyond the Great Wall in advance, place the vulcanized lead spot that 1.5h obtain variable concentrations in 50 ℃, take out lead acetate paper, can be according to the shade of spot to measuring the sulfur content property the advanced semiquantitative determination in the product;
Measure the medicinal material sulfur content according to the following steps: get traditional Chinese medicinal material samples and pulverize, cross sieve No. 2, precision takes by weighing 2g in the 150ml conical flask, adds ethanol 20ml, weigh, ultrasonic Extraction 30min cools, and filters, must measure product solution, get the product of mensuration solution 2ml, join in the ancient Cai Shi reaction bulb, add water 20ml, add zinc granule 2g, hydrochloric acid solution 10ml, new system liquor kalii iodide 10 ml, 10 in the inferior tin of acid chlorization, the arsenic detecting tube of Lead acetate paper is housed immediately beyond the Great Wall in advance, place 1.5h in 50 ℃ of water-baths, get the vulcanized lead spot, determine content according to the shade and the comparison of contrast spot of spot.
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Cited By (7)
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| CN102735797A (en) * | 2011-07-19 | 2012-10-17 | 成都中医药大学 | Method for detecting sulfur dioxide residue limit of traditional Chinese medicinal material or traditional Chinese medicinal decoction tablet |
| CN103234966A (en) * | 2013-04-27 | 2013-08-07 | 甘肃奇正藏药有限公司 | Detection method and device for residue in sample |
| CN103969256A (en) * | 2014-04-24 | 2014-08-06 | 华南理工大学 | Color-sensor-based device for detecting intensity of stoving |
| CN104198485A (en) * | 2014-08-16 | 2014-12-10 | 中山鼎晟生物科技有限公司 | Rapid detection method of sulfur dioxide in Lycium barbarum fruits |
| CN105067610A (en) * | 2015-08-18 | 2015-11-18 | 陕西省食品药品检验所 | Sulfur dioxide detecting method based on Gutzeit method |
| WO2016107516A1 (en) * | 2014-12-31 | 2016-07-07 | 同方威视技术股份有限公司 | Method for identifying sulfur-smoked food and drug |
| CN113866101A (en) * | 2021-08-19 | 2021-12-31 | 潍柴动力股份有限公司 | Method and device for detecting sulfur content in diesel oil and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102735797A (en) * | 2011-07-19 | 2012-10-17 | 成都中医药大学 | Method for detecting sulfur dioxide residue limit of traditional Chinese medicinal material or traditional Chinese medicinal decoction tablet |
| CN102735797B (en) * | 2011-07-19 | 2016-01-06 | 成都中医药大学 | The detection method of a kind of Chinese crude drug or sulfur dioxide contained in Chinese herbal pieces residual quantity limitation |
| CN103234966A (en) * | 2013-04-27 | 2013-08-07 | 甘肃奇正藏药有限公司 | Detection method and device for residue in sample |
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| CN103969256A (en) * | 2014-04-24 | 2014-08-06 | 华南理工大学 | Color-sensor-based device for detecting intensity of stoving |
| CN103969256B (en) * | 2014-04-24 | 2016-06-22 | 华南理工大学 | A kind of device detecting intensity of sulfitation based on color sensor automatic Titration |
| CN104198485A (en) * | 2014-08-16 | 2014-12-10 | 中山鼎晟生物科技有限公司 | Rapid detection method of sulfur dioxide in Lycium barbarum fruits |
| WO2016107516A1 (en) * | 2014-12-31 | 2016-07-07 | 同方威视技术股份有限公司 | Method for identifying sulfur-smoked food and drug |
| CN105067610A (en) * | 2015-08-18 | 2015-11-18 | 陕西省食品药品检验所 | Sulfur dioxide detecting method based on Gutzeit method |
| CN113866101A (en) * | 2021-08-19 | 2021-12-31 | 潍柴动力股份有限公司 | Method and device for detecting sulfur content in diesel oil and electronic equipment |
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| CN101995405B (en) | 2012-06-27 |
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