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Method for analyzing total arsenic in glass

An analysis method and glass technology, applied in the field of physical and chemical inspection, can solve the problem of inability to realize simultaneous analysis and determination, and achieve the effects of simple and controllable digestion steps, simple analysis process, and easy operation.

Active Publication Date: 2010-07-14
中国科学院上海硅酸盐研究所苏州研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this method is that impurity ions such as sulfur, potassium, and manganese will be introduced, so the simultaneous analysis and determination of these three chemical components and total arsenic cannot be realized

Method used

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  • Method for analyzing total arsenic in glass
  • Method for analyzing total arsenic in glass
  • Method for analyzing total arsenic in glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Instruments and reagents

[0034] XS-205 automatic electronic analytical balance (Switzerland, Mettler-Toledo company); Vista Axial CCD Simultaneous ICP-AES Spectrometer (USA, Varian company), charge-coupled detector, dispersion system is echelle grating, concentric atomizer, The frequency is 40.68MHz, and the instrument is controlled by IBM computer and Varian's Vista software system.

[0035] Instrument working parameters: power 1.1kW, cooling gas flow 15L / min, auxiliary gas flow 1.5L / min, atomizing gas flow 0.8L / min, integration time 5s; repeat times 3 times, stabilization time 20s, sample lifting time 20s , cleaning time 10s, peristaltic pump speed 15rpm; argon purity 99.99%.

[0036] Analysis spectral line: The determination spectral line of As element is As193.696nm.

[0037] The concentration of arsenic single-element standard solution is 1mg / mL (GSB G 62028-90, National Iron and Steel Materials Testing Center Iron and Steel Research Institute); hydrochloric...

Embodiment 2

[0044] The determination procedure is the same as that in Example 1. The glass sample is selected from Zhejiang Zhenshen Thermal Insulation Technology Co., Ltd. The calculated mass percentage of total arsenic in the glass sample is 0.102%.

Embodiment 3

[0046] The determination steps are the same as in Example 1, the glass sample is selected from NBS standard reference material 89, and the calculated mass percentage of total arsenic in the glass sample is 0.347%.

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Abstract

The invention relates to a method for analyzing total arsenic in glass, comprising the following steps of: preparing sample digestion liquid by using nitric acid-hydrogen peroxide as the pre-oxidant and using hydrofluoric acid-perchloric acid as dissolver processing sample; and measuring the content of arsenic in the digestion liquid by an inductive coupling plasma atomic emission spectrum method. The analyzing method can effectively avoid volatilization loss of low-valent arsenic in the acid solution process; besides, devices such as a hydride generator and the like are not needed by directly measuring the arsenic content in the sample digestion solution; the dissolver is general and easy to obtain, and the digestion step is simple and controllable. Compared with the dissolving sample method of arsenic in the national standard GB / T 1549-2008 of the fibre glass chemical analyzing method, the method has the advantages that a great amount of impurity elements such as manganese, potassium, sulphur, and the like can not be introduced, thereby the method can be used for decomposing and measuring most chemical components including arsenic, manganese, potassium, sulphur, and the like in the glass ample in one step; and precipitation reaction is not performed between the dissolver and the chemical components in the sample so that the method can be used for measuring arsenic in high-lead glass sample.

Description

technical field [0001] The invention belongs to the technical field of physical and chemical testing, and in particular relates to an analysis and determination method for the total arsenic content in glass. Background technique [0002] In the production of glass industry, commonly used glass clarifiers include nitrates, sulfates, ammonium salts, fluorides, rare earth minerals, arsenic trioxide, antimony trioxide, etc. Among them, arsenic oxide is a traditional glass clarifying agent. Although it is toxic, it is still widely used in glass production because of its high-efficiency clarifying effect and relatively low price. For example, white arsenic, arsenic-antimony minerals, Arsenic-containing fumes and waste residues, etc. The use of arsenic-containing glass not only causes serious environmental pollution, but also has an important impact on the production and application of glass. In the export trade, there are particularly strict requirements on the toxic and harmful...

Claims

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Application Information

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IPC IPC(8): G01N21/73
Inventor 屈海云陈奕睿
Owner 中国科学院上海硅酸盐研究所苏州研究院
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