GB/T 37632-2019 in English

Standard formulation background and technology evolution analysis

GB/T 37632-2019 was formulated based on the demand of the chemical fiber industry for accurate determination of the content of functional additives. With the development of the textile industry, titanium dioxide is increasingly used as a functional additive in chemical fiber products.

Detailed explanation of experimental steps

Sample digestion:Weigh the dried sample, place it in a Kjeldahl flask, add concentrated sulfuric acid, and heat it in a fume hood until it is completely dissolved. Then add hydrogen peroxide drop by drop and continue heating until the solution is colorless and transparent.

Implementation suggestions

• The laboratory needs to be equipped with protective equipment to ensure the safety of operators.
• Regularly calibrate the spectrophotometer to ensure measurement accuracy.
• Establish a standard curve file to facilitate quick comparison and analysis.