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Measuring method for simple substance sulfur content in building material

A technology for building materials and measurement methods, applied in material separation, analysis materials, measuring devices, etc., can solve the problems of cumbersome operation, narrow application area, poor reproducibility, etc., and achieve good repeatability, fast analysis speed, and accurate results. Effect

Active Publication Date: 2013-01-16
CHINA TEST & CERTIFICATION INT GRP CO LTD
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Problems solved by technology

[0004] For a long time, people have paid less attention to the hazards of elemental sulfur. At present, there is no standard method for the determination of elemental sulfur in building materials and products. Some documents (Wang Guizhi. Determination of elemental sulfur in ores and soils by spectrophotometry. 1996,18(3):52~53; Chen Y W, Joly H A, Belzile N. Determination of elemetal sulfur in environmental samples by gas chromatography-mass spectrometry.1997,137:195~200;) reported spectrophotometry, gas phase Chromatography-mass spectrometry has the disadvantages of narrow application range, large interference, low sensitivity, poor reproducibility, cumbersome operation, etc. Therefore, it is necessary to establish a method with wide applicability that can quickly and accurately determine the content of elemental sulfur in various building materials

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  • Measuring method for simple substance sulfur content in building material
  • Measuring method for simple substance sulfur content in building material
  • Measuring method for simple substance sulfur content in building material

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Embodiment 1

[0063] Embodiment 1, the mensuration of elemental sulfur concentration in building materials

[0064] Using the method of the present invention to detect the concentration of elemental sulfur in building materials (including inorganic mineral materials and rubber and plastic products, etc., the present embodiment is specifically gypsum board), the specific method includes the following steps:

[0065] 1. Pretreatment of building material samples

[0066] Tear off the covering paper on the surface of the gypsum board, take representative gypsum samples from different positions of the gypsum board, crush the sample and use the quartering method to reduce it to about 100g, sieve through a 0.080mm square hole sieve, and sieve the residue Grind fully in an agate mortar until there is no obvious graininess and pass through a 0.080mm square hole sieve. The sample is dried in an oven at a temperature of 45±3°C for 4 hours and then cooled in a desiccator; then, the mass is accurately w...

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Abstract

The invention discloses a measuring method for simple substance sulfur content in a building material. The method comprises the steps of collecting a sample of the building material, extracting the simple substance sulfur in the sample by using extraction liquid, filtering the extraction liquid, analyzing the extracted liquid by using a ion chromatograph (with an electrical conductivity detector), and calculating the simple substance sulfur content in the sample. The method has the advantages of being high in sensitivity, low in detection limit, accurate in result, good in repeatability, simple in experimental step, fast in analyzing speed, free from pollution of reagent and capable of being widely used in measuring of simple substance sulfur content in inorganic mineral materials and rubber and plastic products in the field such as building material inspection, geological inspection and environmental protection. The method plays an import role in measuring of the simple substance sulfur content in the building material.

Description

technical field [0001] The invention relates to a method for measuring the content of elemental sulfur in building materials, in particular to a method for measuring the content of elemental sulfur in inorganic mineral materials and rubber and plastic products. The method can be applied to fields such as building material inspection, geological inspection, and environmental protection. Background technique [0002] Elemental sulfur is ubiquitous in nature and is a yellow crystal (commonly known as sulfur). It is widely used in industry, mainly in the vulcanization process of rubber, and it is used as a raw material to manufacture various sulfur-containing compounds. Elemental sulfur has the characteristics of sublimation. After sublimation into the air, it will corrode metal products such as copper and silver, which will greatly shorten the life of the product, such as causing damage to the circuit board and failure of electronic devices. Therefore, in products containing cop...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06
Inventor 郭中宝李曼梅一飞马振珠崔金华白永智王明玉袁庆丹
Owner CHINA TEST & CERTIFICATION INT GRP CO LTD
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