Method for measuring titanium element or titanium dioxide content in diacetate cellulose tow

A technology of diacetate fiber and titanium dioxide, which is applied in the preparation of test samples, measurement of color/spectral characteristics, etc.

Inactive Publication Date: 2015-07-22
CHINA TOBACCO FUJIAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] The above method meets the basic demand for titanium dioxide detection in the industry, however, the prior art still needs a better method for determining titanium element or titanium dioxide in diacetate fiber tow

Method used

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  • Method for measuring titanium element or titanium dioxide content in diacetate cellulose tow
  • Method for measuring titanium element or titanium dioxide content in diacetate cellulose tow
  • Method for measuring titanium element or titanium dioxide content in diacetate cellulose tow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Drawing and method verification of embodiment 1 standard curve

[0092] 1. Experimental equipment:

[0093] Continuous flow analyzer: API-300 continuous flow analyzer produced by Astoria Company in the United States, equipped with a three-dimensional autosampler model 311, a micro quantitative pump model 302D, a chemical analysis pool model 303A, and a detector model of Type 305D.

[0094] American CEM company produces MARS-6 ultra-high pressure microwave digestion instrument, equipped with EasyPrep digestion tank.

[0095] Mili-Q manufactures Integral5 ultrapure water machines.

[0096] Mettler-Toledo Company produces AL204 electronic balance with a sensitivity of 0.0001g.

[0097] 2. Reagent preparation

[0098] Preparation of 1% dilute nitric acid: Accurately pipette 10mL of 65% nitric acid (superior pure) and dissolve it in a beaker filled with 100mL ultrapure water, transfer it to a 1000mL volumetric flask after dissolving and cooling, and mix it evenly with ul...

Embodiment 2

[0133] Embodiment 2 measures the titanium element or titanium dioxide content in the diacetate fiber tow sample

[0134] 1. Experimental equipment:

[0135] Continuous flow analyzer: Futura multi-channel continuous flow analyzer produced by French Alliance company, equipped with 420nm filter.

[0136] Other instruments and equipment are with embodiment 1.

[0137] 2. Reagent preparation:

[0138] Preparation of color reagent (20g / L diantipyrine methane solution): Accurately weigh 5g diantipyrine methane (AR grade) and dissolve in 100mL 0.48mol / L hydrochloric acid solution, transfer to 250mL capacity after dissolving and cooling bottle, and use 0.48mol / L hydrochloric acid solution to make up the volume and mix evenly. The solution is prepared and used immediately.

[0139] Preparation of pH regulator (by volume, 37% by weight hydrochloric acid: water=0.6:1): accurately measure 120mL 37% by weight hydrochloric acid (excellent grade pure), slowly dissolve in 200mL ultrapure wa...

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Abstract

The invention relates to a method for measuring a titanium element or titanium dioxide content in a diacetate cellulose tow. In the method, a dynamic colorimetric method is adopted, a continuous flow analyzer is used for detecting, and an external standard method is used for quantifying. The method has the advantages of being simple, fast, high in detection safety, accurate in detection result, small influence of personnel and environment, suitable for multi-batch detection demands of factories, etc.

Description

technical field [0001] The invention belongs to the field of detection of diacetate fiber tow, in particular to a method for measuring the content of titanium element or titanium dioxide in diacetate fiber tow. Background technique [0002] Titanium dioxide is a kind of textile auxiliary material added in the manufacturing process of acetate fiber, which plays the role of coloring and whitening. It has high food safety, strong tinting strength, high whiteness, and good processing performance. It is considered the best white pigment in the world and is widely used in papermaking, textile, paint, food, cosmetics and other fields. [0003] However, excessive application of titanium dioxide will produce a large number of flying flowers during the production and use of the diacetate fiber tow for cigarettes, and at the same time increase the probability of easy breakage of the tow during processing. These flying flowers and fine dust have an impact on the environment of the prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N1/44
Inventor 方钲中张建平刘泽春张鼎方蔡国华黄华发刘秀彩许寒春谢卫
Owner CHINA TOBACCO FUJIAN IND
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