Gambiered Guangdong Silk Identification via Multi-Stage Analysis
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Solution Overview
Problem
There is a lack of accurate methods to identify genuine and fake, high-quality and low-quality gambiered Guangdong silk, which is a traditional and environmentally friendly silk fabric, due to its complex handmade process and the increasing presence of counterfeit products in the market.
Innovation Solution
A multi-step identification method involving microscopic examination, pyrolysis gas chromatography, high-performance liquid chromatography, and Kjeldahl determination to analyze fiber samples, including observing fiber surface morphology, generating fingerprint chromatograms, extracting and analyzing dye compositions, and determining protein content to verify the authenticity and quality of gambiered Guangdong silk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional visual inspection methods are used to identify gambiered Guangdong silk, then the detection process is simple and quick, but the identification accuracy is insufficient and cannot distinguish genuine from fake products
Solution Approach 1:
The identification method is divided into four distinct detection stages: microscopic examination of fiber surface, pyrolysis gas chromatography for fingerprint chromatogram, high-performance liquid chromatography for dye composition, and Kjeldahl determination for protein content. Each stage targets specific characteristics of genuine gambiered Guangdong silk, allowing systematic verification while maintaining clear procedural organization despite the multi-step nature of the analysis.
Solution Approach 2:
The patent introduces standardized reference materials and fingerprint chromatograms as intermediaries for comparison. Genuine gambiered Guangdong silk produces characteristic fingerprint patterns and chromatogram profiles that serve as reference standards, enabling objective comparison and identification without requiring subjective visual assessment.
2Reliability
If multiple advanced detection methods are employed to ensure accurate identification, then the identification accuracy improves, but the detection process becomes more complex and time-consuming
Solution Approach 1:
The method performs preliminary microscopic examination first to observe fiber surface morphology and black-brown particles, which provides initial screening capability. This preliminary step helps filter out obviously fake samples before proceeding to more time-consuming chromatographic analyses, thereby reducing overall detection time for batch processing.
Solution Approach 2:
The patent employs a tiered detection strategy where not all four methods need to be applied to every sample. Depending on the preliminary results and suspected authenticity level, appropriate subsets of the full detection protocol can be applied, allowing flexible time investment while maintaining reliable identification when needed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method allows for accurate differentiation between genuine and fake, high-quality and low-quality gambiered Guangdong silk, providing a simple, cost-effective, and environmentally friendly evaluation process.
Implementation Method 1
forming a finger-print chromatogram based on the data obtained by analyzing the fibers by pyrolysis gas chromatography; wherein the pyrolysis temperature is 450° C. and the pyrolysis time is 25 ̃35 s
Implementation Method 2
analyzing the compositions of the extracting solution by high performance liquid chromatography; wherein the chromatographic column is XDB-C18 or SB-C18, the wavelength is 280 nm
Implementation Method 3
reacting appropriate fibers with copper sulfate, potassium sulfate and sulfuric acid, converting the organic nitrogen in the fibers into inorganic ammonium salt and then converting the inorganic ammonium into nitrogen under alkaline condition
Data Source
AI summary
A method for identifying gambiered Guangdong silk includes the steps of: detecting the surface state of fiber by microscope; detecting the pyrolysis fragments of fabrics by pyrolysis gas chromatography; determining the crude protein content in the fiber by Kjeldahl determination; and detecting the dye component of the fabrics by high performance liquid chromatography. The method of the present invention can accurately identify the true and fake, good and bad of the gambiered Guangdong silk, and then make an accurate evaluation on the gambiered Guangdong silk; and the present invention is simple, useful, environmental and has low cost.