In this standard, the use or dilution of commercially available volatile strong acids like hydrochloric acid, nitric acid, hydrofluoric acid, etc., the use of sulfuric acid, nitric acid, hydrochloric acid, perchloric acid, hydrofluoric acid, etc. for sample dissolving and the use of potassium pyrosulfate, etc. on blast burner for sample fusing shall be carried out in fume hood. Plastic gloves shall be worn when using such strongly corrosive acids as hydrofluoric acid, sulfuric acid, nitric acid, perchloric acid, etc.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2 Scope
This standard specifies general rules and specimen preparation for fibrous glass chemical analysis as well as reagents, analytical procedures, result calculation, precision, etc. of determination of such chemical components as silicon dioxide, boron trioxide, total iron, ferrous oxide, titanium dioxide, manganese oxide, zirconium dioxide, aluminium oxide, calcium oxide, magnesium oxide, lithium oxide, sodium oxide, potassium oxide, fluoride, total arsenic, total antimony, total sulfur, phosphorus pentoxide, strontium oxide, zinc oxide, cerium dioxide, barium, cadmium, chromium, mercury, lead, etc. in glass.
This standard is applicable to the determination of chemical components in alkali-free (E and ECR), medium-alkali (C), alkali-resisting (AR), high-alkali (A), high-silica, high-strength (S), basalt, glass wool, rock wool, mineral wool and aluminum silicate wool glasses as well as fibrous glasses and the determination of chemical components in other glasses with similar chemical composition.
3 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 601-2002 Chemical Reagent - Preparatoins of Standard Volumetric Solutions
GB/T 602-2002 Chemical Reagent - Preparations of Standard Solutions for Impurity
GB/T 4842 Pure Argon
GB/T 6682 Water for Analytical Laboratory Use - Specification and Test Methods
GB 6819 Dissolved Acetylene
GB/T 8980 High Purity Nitrogen
GB/T 10624 High Purity Argon
4 General Rules
4.1 Instruments and calibration
Electric furnace used for drying sample; chamber electric resistance furnace used for sample ignition; one-ten-thousandth analytical balance used for accurate weighing; volumetric flask, pipet and burette used for glassware instrument in scaling volume; visible spectrophotometer used in spectrophotometric method; atomic absorption spectrometer used in atomic absorption spectrophotometry (AAS); flame photometer used in flame atomic emission spectrometry (FES); inductively coupled plasma atomic emission spectrometer used in inductively coupled plasma atomic emission spectrometry (ICP), etc. The above-mentioned instruments and equipment shall be periodically calibrated so that they meet the testing requirements.
