A method for detecting acid red 26
An acid red, sample technology, applied in color/spectral property measurement, chemical machine learning, design optimization/simulation, etc., can solve the problems of expensive gas-mass spectrometry, low detection efficiency, and complicated pretreatment.
Inactive Publication Date: 2021-05-14
GUANGXI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
However, the gas-mass spectrometer is expensive, the test time is long, and the detection efficiency is low, so it cannot be used for qualitative analysis of unknown substances; UV-visible spectroscopy is not suitable for detecting complex mixed components; thin-layer chromatography needs to separate mixed components Quantitative analysis can only be performed on the analytes in the medium, and the quantitative accuracy will not be too high; high performance liquid chromatography has problems such as low efficiency, high equipment cost, and complicated pretreatment
At present, the methods used for detection and analysis have the problems of complex sample pretreatment and low efficiency. These problems limit the application of some detection and analysis methods in related fields. Based on this, it is necessary to provide an effective and rapid detection method. urgent needs in this field
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Embodiment 1
[0031] A method for detecting acid red 26, the specific steps of the detection of acid red 26 are:
[0032] Step 1. Analytical sample preparation
[0033] Take by weighing 0.1g each of S1, S2, and S3 dyes respectively, and said S1, S2 are acid red 26, and are prepared into a standard mother liquor with a concentration of 1.0g / L, and a series of dye liquors with different concentrations are prepared with the mother liquor, wherein the concentration of each dye is at 0.00-0.15g / L; see Table 1, see dyeing process curve figure 1 :
[0034] Table 1 Concentration of series dye solution
[0035]
[0036] 2. Take 1g of pure wool thread in turn, code the serial number, soak each piece of pure wool thread with warm water at 40°C, squeeze it dry, and put it into a series of dyeing solutions in turn for dyeing.
[0037] Dyeing conditions: bath ratio 1:40, sodium sulfate 10g / L, pH 2.5-4, adjusted with sulfuric acid, dyed at 40°C for 10 minutes, then increased by 10°C every 10 minutes...
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The invention relates to a method for detecting acid red 26, in particular to fast and non-destructive analysis of dye content on pure wool threads by adopting an oblique projection algorithm and visible reflection spectrum, and belongs to the field of dye inspection for clothing fabrics. Taking the dye Acid Red 26 as the analysis object, the oblique projection algorithm was used to quickly analyze the dye content on the pure woolen thread. Utilize the ultraviolet-visible optical fiber spectrometer to collect the visible reflectance measurement spectral data of textile samples containing different contents of acid red 26, and combine the oblique projection algorithm to establish the standard curve of the content of acid red 26 and the signal value of the components; by collecting the visible- The reflectance spectrum, combined with the oblique projection algorithm, calculated the signal value of Acid Red 26 components, and brought it into the standard curve to analyze the content of Acid Red 26 in the sample. The analysis method established by the application has reliable results, high efficiency, simple operation, and low analysis cost, and provides a feasible solution for rapid analysis of dyes on textiles.
Description
technical field [0001] The invention relates to a method for detecting acid red 26, in particular to fast and non-destructive analysis of dye content on pure wool threads by adopting an oblique projection algorithm and visible reflection spectrum, and belongs to the field of dye inspection for clothing fabrics. Background technique [0002] The detection of banned azo dyes has attracted more and more attention from people and textile manufacturers. Acid red 26 is a banned azo dye used in the printing and dyeing of textiles and clothing. Under special conditions, it can decompose and produce carcinogenic aromatic amines. Activation changes the DNA structure of the human body to cause lesions and induce cancer. In the international ecological textile standard Oeko-TexStandard 1000, the European Union 2002 / 371 / EC directive, my country's national standard "Technical Requirements for Ecological Textiles", and the environmental protection industry "Technical Requirements for Environ...
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IPC IPC(8): G01N21/31G16C20/20G16C20/70
CPCG01N21/33G06F30/20
Inventor 粟晖张景清梁晓芸陈维骥姚志湘
Owner GUANGXI UNIVERSITY OF TECHNOLOGY