Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Test method for calcium content in tussah cocoon shell

A test method and cocoon layer technology, which is applied in the field of testing the calcium content in tussah cocoon cocoon layer, can solve the problems of cumbersome operation process and low precision, and achieve simple operation process, high precision and few operation process steps Effect

Active Publication Date: 2017-08-22
WUHAN TEXTILE UNIV
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects and problems of low precision and complicated operation process in the prior art, and provide a method for testing the content of calcium in the cocoon layer of tussah cocoons with high precision and simple operation process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A method for testing the content of calcium in tussah cocoon cocoons, said method for testing comprises the following steps in turn:

[0056] Acquisition of the reaction solution: First dissolve complete EDTA or EDTA-2Na with NaOH solution (1mol / L-1.5mol / L) to obtain the initial solution, wherein the concentration of the initial solution obtained by dissolving EDTA is 0.01-1.0mol / L, dissolve The concentration of the initial solution obtained by EDTA-2Na is 0.01-0.3mol / L, and the number of initial solution is at least three, and then the initial solution is neutralized to a pH of 6 with HCL solution (0.5mol / L-1mol / L). -7 to obtain the reaction solution;

[0057] The progress of the reaction: first add the pulverized tussah cocoon layer to the above reaction solution one by one, the dosage ratio of the tussah cocoon layer to the corresponding reaction solution is 1:100-1:50g / ml, React for 1h-2h with stirring to obtain the observed liquid;

[0058] Determination of calci...

Embodiment 2

[0060] Basic content is the same as embodiment 1, the difference is:

[0061] The number of initial solution is five, and when the solute in the initial solution is EDTA, its concentration is 0.01mol / L, 0.02mol / L, 0.04mol / L, 0.06mol / L, 0.08mol / L.

[0062] The number of parts of the initial solution is five parts. When the solute in the initial solution is EDTA-2Na, its concentration is 0.01mol / L, 0.03mol / L, 0.06mol / L, 0.12mol / L, 0.25mol / L.

Embodiment 3

[0064] Basic content is the same as embodiment 1, the difference is:

[0065] The number of parts of the initial solution is six parts. When the solute in the initial solution is EDTA, its concentration is 0.01mol / L, 0.02mol / L, 0.04mol / L, 0.06mol / L, 0.08mol / L, 1.0mol / L L.

[0066] The number of initial solution is six, and when the solute in the initial solution is EDTA-2Na, its concentration is 0.01mol / L, 0.03mol / L, 0.06mol / L, 0.12mol / L, 0.25mol / L, 0.30 mol / L.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a test method for calcium content in a tussah cocoon shell. The method comprises the steps: preparing multiple parts of EDTA or EDTA-2Na solutions by using a NaOH solution, a HCL solution, EDTA and EDTA-2Na, adding the tussah cocoon shell to react, selecting the solution with best apparent form of the tussah cocoon shell to filter so as to obtain filtrate after the reaction is finished, conducting a single-channel scanning inductively coupled plasma emission spectroscopy (ICP-AES) on the filtrate to determine the content of Ca<2+>, that is, calcium content in the tussah cocoon shell, and then calculating the calcium oxalate crystal content of the tussah cocoon shell. The design is not only high in precision and good in accuracy, but also simple in operation process and conducive to cocoon reelability of silks in the tussah cocoon.

Description

technical field [0001] The invention relates to a method for testing calcium content in natural products, belonging to the technical field of detection, in particular to a method for testing calcium content in cocoons of tussah silkworms, which is particularly suitable for improving accuracy and reducing operational difficulty. Background technique [0002] The cocoon layer of tussah cocoon has good thermal insulation performance and can resist the cold weather outside. The existence of calcium oxalate crystals helps to reduce the penetration of external air into the cocoon, which can reduce the penetration of wind and form a microclimate between the cocoon layers, so It can effectively maintain the thermal insulation of the tussah cocoon layer under windy conditions. The content of calcium oxalate crystals is also an important factor affecting the thermal performance of tussah cocoons. After studying the structure of tussah silkworm cocoons, the type of calcium oxalate cry...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N21/73
CPCG01N21/73
Inventor 武继松李梦茹肖军
Owner WUHAN TEXTILE UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com