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GB/T 41442-2022: Test method for pure cashmere content of cashmere - Near infrared spectrometer method
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Test method for pure cashmere content of cashmere - Near infrared spectrometer method
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GB/T 41442-2022
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Basic data | Standard ID | GB/T 41442-2022 (GB/T41442-2022) | | Description (Translated English) | Test method for pure cashmere content of cashmere - Near infrared spectrometer method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | W20 | | Word Count Estimation | 10,136 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 41442-2022: Test method for pure cashmere content of cashmere - Near infrared spectrometer method
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Test method for pure cashmere content of cashmere -- Near infrared spectrometer method
ICS 59.060
CCS W20
National Standards of People's Republic of China
Test method for cashmere net cashmere rate by near-infrared spectroscopy
method
Published on 2022-04-15
2022-11-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
drafted.
Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents.
This document is proposed and managed by the National Fiber Standardization Technical Committee (SAC/TC513).
This document was drafted by. Fiber Quality Monitoring Center of Inner Mongolia Autonomous Region, Beijing University of Chemical Technology, Sippet (Beijing) Technology Co., Ltd.
The main drafters of this document. Yao Miaomiao, Wang Li, Yuan Hongfu, Pang Libo, Dai Lingjie, Xu Xuanxuan, Lv Xiaohong, Cao Weifang, Yu Jia, Feng Manrong,
Hu Aiqin.
Test method for cashmere net cashmere rate by near-infrared spectroscopy
1 Scope
This document describes a test method for the detection of cashmere net cashmere by near-infrared spectroscopy.
This document is suitable for the rapid detection of the net cashmere rate of raw cashmere and washed cashmere.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document.
GB/T 8170 Numerical Rounding Rules and Representation and Judgment of Limit Values
GB 18267 Cashmere
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Calibration database calibratedlibrary
A database consisting of a set of near-infrared spectra and calibration values of cashmere samples involved in calibration.
3.2
calibrated sample
Samples that pass verification during the calibration process.
Note. The calibration sample is used as the verification material for calibration in this document.
3.3
Sampleoutsidelibrary sampleoutsidelibrary
The standard deviation of the spectrum does not exceed the set threshold and the error of the property value is less than the maximum allowable value of the reproducibility of the calibration method, and the spectral similarity is greater than the set value.
Samples that mark the boundaries of the database.
3.4
outliersample
Samples that failed verification during calibration.
Note. Include samples whose spectral standard deviation exceeds the set threshold or whose property value error is greater than the reproducibility of the calibration method.
4 Principles
Based on the correlation between the change of the net cashmere rate of the sample and the change of its molecular spectrum, a multivariate analysis method was used to establish a spectroscopic determination of net
According to the calibration curve of the cashmere ratio, measure the spectrum of the sample to be tested to obtain the net cashmere ratio.
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