Method for determining total zinc content in textile by adopting microwave digestion assisted inductively coupled plasma emission spectrometry
A technology of coupled plasma and emission spectroscopy, applied in the field of textile testing, can solve problems such as the inability to measure the total zinc content in textiles, and the inability to comprehensively investigate the potential risks of human harm caused by the dissolution of metals from textiles, so as to improve the measurement sensitivity and precision, Less time, guaranteed accuracy
Pending Publication Date: 2020-06-19
江苏省纺织产品质量监督检验研究院
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Problems solved by technology
[0002] At present, in the Chinese textile GB / T 17593.1-2007 standard, the sample pretreatment uses simulated acid sweat to extract heavy metals, and uses an atomic absorption spectrophotometer to detect; Unable to determine the total zinc content in textiles
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[0019] The present invention will be specifically introduced below in conjunction with the embodiments.
[0020] The instruments and reagents used in this embodiment are as follows: inductively coupled plasma emission spectrometer, microwave digestion instrument, electronic analytical balance; reagents: nitric acid, hydrogen peroxide; zinc element standard solution: concentration is 100mg / mL; argon gas: purity Greater than 99.99%; ultrapure water.
[0021] Microwave digestion is usually a wet digestion method that uses microwaves to heat the digestion solution and samples in a closed container to quickly dissolve various samples under high temperature and pressurized conditions. Microwave digestion has two characteristics: closed container reaction and microwave heating. Determine its advantages of completeness, rapidity and low blank; inductively coupled plasma atomic emission spectrometry (ICP-OES) is one of the most advanced element determination techniques at present, with...
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The invention discloses a method for determining the content of total zinc in a textile by adopting microwave digestion assisted inductively coupled plasma emission spectrometry. The method comprisesthe following steps: (1) treating a textile sample by adopting microwave digestion: shearing a to-be-detected textile sample, pre-digesting the sample by utilizing a nitric acid-hydrogen peroxide system, then digesting the pre-digested sample in a microwave digestion system, and synchronously performing a blank test to obtain a sample solution and a blank control solution; and (2) determining thetotal zinc content of the textile sample by adopting inductively coupled plasma emission spectrometry. According to the method, microwave digestion is adopted as a pretreatment method, so that the consumed time is short, perchloric acid is not added during digestion, the measurement sensitivity and precision are improved, and the detection accuracy is ensured.
Description
technical field [0001] The invention relates to a method for measuring the total zinc content in textiles by using microwave digestion-assisted inductively coupled plasma emission spectrometry, and belongs to the technical field of textile detection. Background technique [0002] At present, in the Chinese textile GB / T 17593.1-2007 standard, the sample pretreatment uses simulated acid sweat to extract heavy metals, and uses an atomic absorption spectrophotometer to detect; The total zinc content in textiles could not be determined. Contents of the invention [0003] In order to solve the deficiencies of the prior art, the present invention provides a method for determining the total zinc content in textiles by using microwave digestion-assisted inductively coupled plasma emission spectrometry. Plasma emission spectrometry enables accurate and precise measurement of total zinc content in textiles. [0004] The technical scheme adopted in the present invention is: [0005...
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IPC IPC(8): G01N21/73G01N1/44
CPCG01N21/73G01N1/44
Inventor 徐建云田姝刘娟黄启英
Owner 江苏省纺织产品质量监督检验研究院