CN109580823A - The detection method of red colour system coloring agent in a kind of medicinal material - Google Patents

The detection method of red colour system coloring agent in a kind of medicinal material Download PDF

Info

Publication number
CN109580823A
CN109580823A CN201811572496.4A CN201811572496A CN109580823A CN 109580823 A CN109580823 A CN 109580823A CN 201811572496 A CN201811572496 A CN 201811572496A CN 109580823 A CN109580823 A CN 109580823A
Authority
CN
China
Prior art keywords
coloring agent
medicinal material
standard solution
colour system
detection method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811572496.4A
Other languages
Chinese (zh)
Inventor
姜涛
陈林明
陈丹纯
刘佳会
陈庭雷
施枝江
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kangmei Pharmaceutical Co Ltd
Original Assignee
Kangmei Pharmaceutical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kangmei Pharmaceutical Co Ltd filed Critical Kangmei Pharmaceutical Co Ltd
Priority to CN201811572496.4A priority Critical patent/CN109580823A/en
Publication of CN109580823A publication Critical patent/CN109580823A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/62Detectors specially adapted therefor
    • G01N30/74Optical detectors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/86Signal analysis
    • G01N30/8624Detection of slopes or peaks; baseline correction
    • G01N30/8631Peaks
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/86Signal analysis
    • G01N30/8675Evaluation, i.e. decoding of the signal into analytical information
    • G01N30/8679Target compound analysis, i.e. whereby a limited number of peaks is analysed

Landscapes

  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Library & Information Science (AREA)
  • Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Abstract

The invention discloses a kind of detection methods of red colour system coloring agent in medicinal material, the following steps are included: 1) famille rose, amaranth, erythrosine standard reagent is taken to add the ethyl alcohol of 60-80% that the first standard solution is made, acid red 73, New Fuchsine, 808 scarlet, tonyred Ι, SudanⅣ standard reagent is taken to add ethyl alcohol that the second standard solution is made;2) each 1mL of the first, second standard solution of step 1) is taken, dilutes, obtains compound standard solution;3) the compound standard solution injection liquid chromatograph for taking step 2) to obtain, measures in the Detection wavelength of 500-520nm;4) it takes sample to be tested to be analyzed, doubtful peak is checked using ultraviolet-visible Optical Chromatography.This method can in fast qualitative detection product whether contain red colour system coloring agent, each signal peak sharply without hangover, it is noiseless, reduce the requirement to equipment, improve detector efficiency, have more optimistic market prospects.

Description

The detection method of red colour system coloring agent in a kind of medicinal material
Technical field
The present invention relates to a kind of a kind of detection methods of red colour system coloring agent in analysis method more particularly to medicinal material.
Background technique
Chinese medicine addition coloring agent is a kind of illegal addition behavior.The Chinese medicine red serial coloring agent of detection mainly has: Famille rose, amaranth, erythrosine, acid red 73, New Fuchsine, 808 scarlet, tonyred Ι, SudanⅣ.For this purpose, national medicine prison is total Office issued multiple Chinese medicines dyeing detection method, but these methods be mostly be directed to single medicinal material material detected it is (as follows Table 1), when facing several kinds of Chinese medicinal materials, because of the diversity of method, lead to the complexity of pre-treatment, He Shangji analytic process, detection effect Rate is slow, therefore gropes a kind of detection method of red staining agent in Chinese medicine, finds general detection method,
1 red staining agent of table and detection method
Above-mentioned detection method is mostly single coloring agent detection, and detection efficiency is lower, for this reason, it may be necessary to Chinese medicine red colour system Column coloring agent multicomponent is groped with the method that the time is detected, and establishing one kind, to be able to carry out the red serial coloring agent of Chinese medicine more The universal test method that component is detected with the time.
Summary of the invention
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide in a kind of high-throughput, efficient medicinal material The detection method of red colour system coloring agent.
The purpose of the present invention adopts the following technical scheme that realization:
The detection method of red colour system coloring agent in a kind of medicinal material, comprising the following steps:
1) it takes famille rose, amaranth, erythrosine standard reagent to add the ethyl alcohol of 60-80% that the first standard solution is made, takes acid Property is red 73, New Fuchsine, 808 scarlet, tonyred Ι, SudanⅣ standard reagent add ethyl alcohol that the second standard solution is made;
2) the first standard solution and each 1mL of the second standard solution of step 1) are taken, dilutes, obtains compound standard solution;
3) the compound standard solution injection liquid chromatograph for taking step 2) to obtain, measures in the Detection wavelength of 500-520nm;
The parameter of the liquid chromatograph are as follows:
Chromatographic column: C18Reverse-phase chromatographic column;
Mobile phase: A acetonitrile;
B 0.02mol/L ammonium acetate solution;
Elution program: t0-15min, mobile phase A is gradually increased to 10-20vt% by 5vt%;
t15-40min, the ratio increase 60vt% of mobile phase A;
t40-41min, the ratio increase 10vt% of mobile phase A;
t41-50min, the ratio of mobile phase A increases to 95vt%;
t>50min, constant mobile phase A is 95vt%;
4) sample to be tested is taken, the ethyl alcohol with step 1) with concentration is added, ultrasonic extraction takes supernatant, and filtering obtains to be measured molten Liquid;
5) solution sample introduction to be measured is eluted using chromatographic condition identical with step 3), to doubtful peak using it is ultraviolet-can See that absorption spectrum is checked.
Further, in step 1), using 70% ethyl alcohol.
Further, in step 1), concentration of each standard reagent in the first standard solution is 0.08-0.12mg/mL.
Further, in step 1), concentration of each standard reagent in the second standard solution is 0.08-0.12mg/mL.
Further, in step 2), concentration of each standard reagent in compound standard solution is 0.02-0.03mg/mL.
Further, in step 3), solution is by 0.22 μm of filter membrane filtering before sample introduction.
Further, in step 3), the material of filter membrane is polytetrafluoroethylene (PTFE).
Further, in step 3), mobile phase A is gradually increased to 15vt% by 2vt%.
Further, in step 3), Detection wavelength 510nm.
Further, the uv-visible absorption spectra review in step 5), in 260nm-700nm wave-length coverage.
Compared with prior art, the beneficial effects of the present invention are:
Method provided by the invention rapidly can carry out qualitative detection to the coloring agent in medicine, each red colour system coloring agent Retention time interval is long, and each signal peak is multiple by carrying out uv-visible absorption spectra to doubtful peak sharply without hangover, noiseless Inspection, reduces the requirement to equipment, improves detector efficiency, has more optimistic market prospects.
Detailed description of the invention
Fig. 1 is the HPLC figure of the standard solution of embodiment 1;
Fig. 2 is the HPLC figure for the madder medicinal material that the lot number of embodiment 2 is 20171126;
Fig. 3 is the HPLC figure for the madder medicinal material that the lot number of embodiment 2 is 20180124;
Fig. 4 is the HPLC figure for the madder medicinal material that the lot number of embodiment 2 is 20180323.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the present invention, it should be noted that not Under the premise of conflicting, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination Example.
The detection method of red colour system coloring agent in a kind of medicinal material, comprising the following steps:
1) it takes famille rose, amaranth, erythrosine standard reagent to add the ethyl alcohol of 60-80% that the first standard solution is made, takes acid Property is red 73, New Fuchsine, 808 scarlet, tonyred Ι, SudanⅣ standard reagent add ethyl alcohol that the second standard solution is made;
The step for sulfonic carmine and amaranth and has phenol hydroxyl by the way of step-wise dissolution, by active group The erythrosine of base dissolves together, and other red staining agent are dissolved together, can effectively improve dissolved efficiency;
2) the first standard solution and each 1mL of the second standard solution of step 1) are taken, dilutes, obtains compound standard solution;
3) it is filtered using 0.22 μm of Teflon filtration film, the compound standard solution injection liquid phase color for taking step 2) to obtain Spectrometer is measured in the Detection wavelength of 500-520nm;
The parameter of the liquid chromatograph are as follows:
Chromatographic column: C18Reverse-phase chromatographic column;
Mobile phase: A acetonitrile;
B 0.02mol/L ammonium acetate solution;
Elution program: t0-15Min, mobile phase A are gradually increased to 10-20vt% by 5vt%;
t15-40The ratio of min, mobile phase A increase 60vt%;
t40-41The ratio of min, mobile phase A increase 10vt%;
t41-50The ratio of min, mobile phase A increase to 95vt%;
t>50Min, constant mobile phase A is 95vt%;
Under the elution program, the elution efficiency of each coloring agent is high, and being overlapped or trailing do not occur in the appearance of each coloring agent;
4) sample to be tested is taken, the ethyl alcohol with step 1) with concentration is added, ultrasonic extraction takes supernatant, and filtering obtains to be measured molten Liquid;
5) it is filtered using 0.22 μm of Teflon filtration film, solution sample introduction to be measured, using chromatography identical with step 3) Condition is eluted, and is checked using uv-visible absorption spectra doubtful peak.
The result judgement method of step 5) are as follows: in the HPLC chromatogram of sample to be tested, there is not allowed that with contrast agents chromatography master The identical chromatographic peak of peak retention time.If there is the identical chromatographic peak of retention time, compared using diode array detector For corresponding chromatographic peak in the uv-visible absorption spectra of 260-700nm wave-length coverage, absorption spectrum should not be identical.
The detection method is by gradient elution so as to carrying out qualitative inspection to the red staining agent in medicinal material in 70min It surveys, as shown in Figure 1, appearance time of the standard reagent on HPLC is followed successively by amaranth, famille rose, erythrosine, acid red 73, new Magenta, Sudan red 1,808 scarlet and Sudan IVs.
Embodiment 1:
A kind of production of the standard diagram of red staining agent, comprising the following steps:
1) respectively take that famille rose, amaranth, that erythrosine standard reagent 1mg adds the ethyl alcohol of 10mL 70% that the first standard is made is molten Liquid respectively takes acid red 73, New Fuchsine, 808 scarlet, tonyred Ι, SudanⅣ standard reagent 1mg to add the ethyl alcohol system of 10mL 70% At the second standard solution;
2) the first standard solution and each 1mL of the second standard solution for taking step 1), are diluted to 5mL with 70% ethyl alcohol, obtain Compound standard solution;
3) it is filtered using 0.22 μm of Teflon filtration film, the compound standard solution injection liquid phase color for taking step 2) to obtain Spectrometer is measured in the Detection wavelength of 510nm;
The parameter of the liquid chromatograph are as follows:
Chromatographic column: C18Reverse-phase chromatographic column;
Mobile phase: A acetonitrile;
B 0.02mol/L ammonium acetate solution;
Elution program: t0-15min, mobile phase A is gradually increased to 15vt% by 5vt%;
t15-40min, the ratio of mobile phase A increases to 75vt% by 15%;
t40-41min, the ratio of mobile phase A increases to 85vt% by 75%;
t41-50min, the ratio of mobile phase A increases to 95vt% by 85%;
t>50min, constant mobile phase A is 95vt%;
4) ownership of each signal peak is determined.
The HPLC figure of embodiment 1 is shown in Fig. 1, and signal peak 1 is amaranth, retention time 11.6min;Signal peak 2 is Famille rose, retention time 16.7min;Signal peak 3 is erythrosine, retention time 27.2min;Signal peak 4 is acid red 73, Retention time is 27.6min;Signal peak 5 is New Fuchsine, retention time 33.4min;Signal peak 6 is Sudan red 1, retention time For 47.1min;Signal peak 7 is 808 scarlet, retention time 51.3min;Signal peak 8 is Sudan IV, and retention time is 60.5min。
Embodiment 2:
The detection method of red colour system coloring agent in a kind of madder medicinal material, comprising the following steps:
1) 1g sample to be tested is taken, adds 15mL50vt% ethyl alcohol, ultrasonic extraction 10 minutes, centrifuging and taking supernatant, through 0.45 μm Filter membrane filtering, obtains solution to be measured;
2) through 0.22 μm of Teflon filtration film aspiration step 1) 10 μ L of standard solution, inject liquid chromatograph, Detection wavelength is to be eluted in 510nm;
Chromatographic column: C18Reverse-phase chromatographic column;
Mobile phase: A acetonitrile;
B 0.02mol/L ammonium acetate solution;
Elution program: t0-15min, mobile phase A is gradually increased to 15vt% by 5vt%;
t15-40min, the ratio increase 60vt% of mobile phase A;
t40-41min, the ratio increase 10vt% of mobile phase A;
t41-50min, the ratio of mobile phase A increases to 95vt%;
t>50min, constant mobile phase A is 95vt%;
In the madder medicinal material that lot number is 20171126, the map of HPLC in retention time and embodiment 1 as shown in Fig. 2, mark Signal peak is not found within the scope of the retention time ± 0.2min of quasi- reagent, so, in the madder medicinal material that lot number is 20171126 not Contain red colour system coloring agent.
In the madder medicinal material that lot number is 20180124, the map of HPLC in retention time and embodiment 1 as shown in figure 3, mark Signal peak is not found within the scope of the retention time ± 0.2min of quasi- reagent, so, in the madder medicinal material that lot number is 20180124 not Contain red colour system coloring agent.
In the madder medicinal material that lot number is 20180323, the map of HPLC in retention time and embodiment 1 as shown in figure 4, mark Signal peak is not found within the scope of the retention time ± 0.2min of quasi- reagent, so, in the madder medicinal material that lot number is 20180323 not Contain red colour system coloring agent.
The above embodiment is only the preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto, The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention Claimed range.

Claims (10)

1. the detection method of red colour system coloring agent in a kind of medicinal material, comprising the following steps:
1) it takes famille rose, amaranth, erythrosine standard reagent to add the ethyl alcohol of 60-80% that the first standard solution is made, takes acid red 73, New Fuchsine, 808 scarlet, tonyred Ι, SudanⅣ standard reagent add ethyl alcohol that the second standard solution is made;
2) the first standard solution and each 1mL of the second standard solution of step 1) are taken, dilutes, obtains compound standard solution;
3) the compound standard solution injection liquid chromatograph for taking step 2) to obtain, measures in the Detection wavelength of 500-520nm;
The parameter of the liquid chromatograph are as follows:
Chromatographic column: C18Reverse-phase chromatographic column;
Mobile phase: A acetonitrile;
B 0.02mol/L ammonium acetate solution;
Elution program: t0-15min, mobile phase A is gradually increased to 10-20vt% by 5vt%;
t15-40min, the ratio increase 60vt% of mobile phase A;
t40-41min, the ratio increase 10vt% of mobile phase A;
t41-50min, the ratio of mobile phase A increases to 95vt%;
t>50min, constant mobile phase A is 95vt%;
4) sample to be tested is taken, the ethyl alcohol with step 1) with concentration is added, ultrasonic extraction takes supernatant, and filtering obtains solution to be measured;
5) solution sample introduction to be measured is eluted using chromatographic condition identical with step 3), is inhaled to doubtful peak using ultraviolet-visible Receive spectrum review.
2. the detection method of red colour system coloring agent in medicinal material as described in claim 1, in step 1), using 70% ethyl alcohol.
3. the detection method of red colour system coloring agent in medicinal material as described in claim 1, in step 1), each standard reagent is first Concentration in standard solution is 0.08-0.12mg/mL.
4. the detection method of red colour system coloring agent in medicinal material as described in claim 1, in step 1), each standard reagent is second Concentration in standard solution is 0.08-0.12mg/mL.
5. the detection method of red colour system coloring agent in medicinal material as described in claim 1, in step 2), each standard reagent is compound Concentration in standard solution is 0.02-0.03mg/mL.
6. the detection method of red colour system coloring agent in medicinal material as described in claim 1, in step 3), solution passes through before sample introduction 0.22 μm of filter membrane filtering.
7. the detection method of red colour system coloring agent in medicinal material as claimed in claim 6, in step 3), the material of filter membrane is poly- Tetrafluoroethene.
8. the detection method of red colour system coloring agent in medicinal material as described in claim 1, in step 3), mobile phase A by 2vt% by It edges up to 15vt%.
9. the detection method of red colour system coloring agent in medicinal material as described in claim 1, in step 3), Detection wavelength 510nm.
10. the detection method of red colour system coloring agent in medicinal material as claimed in claim 9, in step 5), in 260nm-700nm wave Uv-visible absorption spectra review in long range.
CN201811572496.4A 2018-12-21 2018-12-21 The detection method of red colour system coloring agent in a kind of medicinal material Pending CN109580823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811572496.4A CN109580823A (en) 2018-12-21 2018-12-21 The detection method of red colour system coloring agent in a kind of medicinal material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811572496.4A CN109580823A (en) 2018-12-21 2018-12-21 The detection method of red colour system coloring agent in a kind of medicinal material

Publications (1)

Publication Number Publication Date
CN109580823A true CN109580823A (en) 2019-04-05

Family

ID=65931317

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811572496.4A Pending CN109580823A (en) 2018-12-21 2018-12-21 The detection method of red colour system coloring agent in a kind of medicinal material

Country Status (1)

Country Link
CN (1) CN109580823A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130056953A (en) * 2011-11-23 2013-05-31 (주)아모레퍼시픽 Simultaneous determination of oxidative hair dye compounds by high performance chromatography
CN106990183A (en) * 2017-05-05 2017-07-28 蚌埠市疾病预防控制中心 The method for chromatographic determination of synthetic coloring matter in a kind of food
CN107202847A (en) * 2017-07-21 2017-09-26 云南中烟工业有限责任公司 The liquid chromatogram measuring method of eight kinds of colouring agents in a kind of quick-fried pearl wall material of cigarette
CN108387657A (en) * 2018-03-07 2018-08-10 吉林师范大学 The detection method of colorant content in Waterelon Frost Lozenges

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130056953A (en) * 2011-11-23 2013-05-31 (주)아모레퍼시픽 Simultaneous determination of oxidative hair dye compounds by high performance chromatography
CN106990183A (en) * 2017-05-05 2017-07-28 蚌埠市疾病预防控制中心 The method for chromatographic determination of synthetic coloring matter in a kind of food
CN107202847A (en) * 2017-07-21 2017-09-26 云南中烟工业有限责任公司 The liquid chromatogram measuring method of eight kinds of colouring agents in a kind of quick-fried pearl wall material of cigarette
CN108387657A (en) * 2018-03-07 2018-08-10 吉林师范大学 The detection method of colorant content in Waterelon Frost Lozenges

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
GERTRUD E.MORLOCK 等: "Rapid Planar Chromatographic Analysis of 25 Water-Soluble Dyes Used as Food Additives", 《MORLOCK & OELLIG: JOURNAL OF AOAC INTERNATIONAL》 *
朱日然 等: "超高效液相色谱-串联质谱法同时测定中药中29种合成着色剂", 《药物分析杂志》 *
苟琰 等: "液质联用法快速筛查中药材及饮片中常见染色掺假物质的方法研究及数据库建立", 《药物分析杂志》 *

Similar Documents

Publication Publication Date Title
Sherma Planar chromatography
Malá et al. Contemporary sample stacking in analytical electrophoresis
CN106546671B (en) Based on the method for remaining sulfa drugs in three column two dimension liquid chromatography and mass spectrometry meat products
CN107121514B (en) Method that is a kind of while detecting 24 kinds of synthetic food colors in cigarette packaging material
CN105527350A (en) Intracellular amino acid metabolic profiling analysis method
CN107091892A (en) The method that the content of synthetic coloring matter in food is tested using high performance liquid chromatography
CN104122359A (en) Method for simultaneously detecting 14 types of forbidden coloring agents in cosmetics
CN104569201B (en) A kind of detection method for determining disperse dyes and dyestuff intermediate residual quantity
CN104391050A (en) Method for simultaneously detecting 38 restricted coloring agents in cosmetic
CN107449850A (en) The method of alkyl phenol in fast synergistic cloud point extraction high performance liquid chromatography combination determination of the environment water sample
Liu et al. The in‐capillary DPPH‐capillary electrophoresis‐the diode array detector combined with reversed‐electrode polarity stacking mode for screening and quantifying major antioxidants in Cuscuta chinensis Lam
CN110221015B (en) Gradient full-information thin-layer identification method for pomegranate bark medicinal material
CN113433232B (en) Method for measuring ginsenoside content in ginseng traditional Chinese medicine
CN109507343B (en) UPLC method for rapidly determining content of effective components of saffron and identifying illegal dyeing
CN108956843A (en) A kind of quick multi information thin-layer identification method of banxia baizhu tianma decoction freeze-dried powder
CN104101661B (en) A kind of method for quick of Detection of Magdala in Food Through
CN107561176B (en) Method for rapidly identifying vegetable dye in dyed textile
CN109580823A (en) The detection method of red colour system coloring agent in a kind of medicinal material
Gergely A review of the application of chiroptical methods to analytical chemistry
Liu et al. A simple and sensitive spectrofluorimetric method for the determination of furosemide using zinc (II)–1, 4‐bis (imidazol‐1‐ylmethyl) benzene complexes
CN103808822A (en) LC-QTOF (Liquid Chromatography-Quadrupole Time Of Flight) analysis method for distinguishing resveratrol of different resources
CN103792302A (en) Method for detecting phadodendrol in cosmetics
CN109752470A (en) A kind of detection method of the multicomponent coloring agent of safflower
CN111965270B (en) Method for detecting 8 synthetic colorants in glutinous rice food
CN114942280A (en) Method for content determination and mass spectrum confirmation of 12 hair dyes in cosmetics

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20190405

RJ01 Rejection of invention patent application after publication