GB/T 28209-2023
Chemical analysis method of borosilicate glass (English Version)
- Standard No.
- GB/T 28209-2023
- Language
- Chinese, Available in English version
- Release Date
- 2023
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/T 28209-2023
- Replace
- GB/T 28209-2011
- Scope
- This document describes the chemical analysis methods of the main components in borosilicate glass, including reagent titration and spectrophotometry, atomic absorption spectrometry (AAS), inductively coupled plasma emission spectrometry and X-ray fluorescence spectrometry. This document is applicable to the chemical analysis methods of borosilicate glass with silicon dioxide, boron trioxide, aluminum trioxide, calcium oxide, magnesium oxide, iron trioxide, potassium oxide, sodium oxide, lithium oxide, zinc oxide, barium oxide, titanium dioxide, manganese dioxide, arsenic trioxide, antimony trioxide, lead oxide, cadmium oxide and chromium trioxide as components.
- Introduction
Key points of standard update and technological evolution
GB/T 28209-2023, as the latest national standard for chemical analysis of borosilicate glass, has made the following technical upgrades compared with the 2011 version:
Revision content 2023 version 2011 version Detection method Three new modern instrumental analysis methods, atomic absorption spectrometry, ICP-OES and XRF, have been added Only traditional titration and spectrophotometry are included Determination elements Extended to 18 components such as lithium oxide Does not include trace elements such as lithium oxide Precision requirements Graded control according to content range (e.g. 0.01-0.1% repeatability limit 0.01%) Uniform requirement is 0.1%
Comparison of core detection methods
Method Principle Applicable elements Detection limit Precision Reagent titration method Acid-base/complex reaction endpoint determination Main components such as SiO₂, B₂O₃, Al₂O₃, etc. 0.1% RSD≤0.25% Atomic absorption spectrometry Atomic vapor absorption of characteristic spectral lines Alkali metals such as K₂O, Na₂O, Li₂O 0.01μg/mL RSD≤0.15% ICP-OES Plasma excitation characteristic emission spectrum As₂O₃, Sb₂O₃ and other trace components 0.004% RSD≤0.02%
Key instrument requirements
The standard sets clear technical specifications for testing equipment:
- Electronic balance: accuracy ≥0.1mg, in line with JJG 196-A level
- ICP-OES: requires high-purity argon (≥99.996%), detector linear range ≥10⁶
- X-ray fluorescence spectrometer: wavelength dispersive type, Rh target X-ray tube power ≥4kW
- Platinum dish: 95%Pt+5%Au alloy, volume ≥30mL
Implementation suggestions and quality control points
Typical application cases
A pharmaceutical glass bottle factory adopted this standard to test 3.3 borosilicate glass, and simultaneously determined 8 components including Al₂O₃(6.2±0.15%) and B₂O₃(12.5±0.20%) by ICP-OES method, which increased the efficiency by 80% compared with the traditional method.
Key control links
- Sample pretreatment: drying at 105℃ and complete digestion with hydrofluoric acid and perchloric acid
- Standard curve verification: correlation coefficient R²≥0.999
- Precision control: implement the tolerance requirements of Table 6-Table 10 according to the content range
- Equipment calibration: XRF needs to be drift corrected daily
Prospects for standard development
With the development of new technologies such as laser ablation ICP-MS, the standard may extend to micro-area analysis and online detection in the future. The current version has established a complete method system for routine laboratory analysis, especially strengthening the detection capability of trace elements.
GB/T 28209-2023 Referenced Document
- GB 1253 Working chemical Sodium chloride
- GB 6819 Dissolved acetylene
- GB/T 1266 Chemical reagent-Sodium chloride
- GB/T 1271 Chemical reagent—Potassium fluoride dihydrate
- GB/T 1292 Chemical reagent.Ammonium acetate
- GB/T 1294 Chemical reagent.L(+)-Tartaric acid
- GB/T 1397 Chemical reagent.Potassium carbonate anhydrous
- GB/T 1400 Chemical reagent.Hexamethylene tetramine
- GB/T 1401 Chemical reagent Ethylenediamine tetraacetic acid,disodium salt dihydrate
- GB/T 1914 Chemical Analysis Filter Paper
- GB/T 2946 Ammonium chloride
- GB/T 4842 Argon
- GB/T 601 Chemical reagent.Preparations of reference titration solutions
- GB/T 602 Chemical reagent--Preparations of standard solutions for impurity
- GB/T 620 Chemical reagent—Hydrofluoric acid
- GB/T 622 Chemical reagent.Hydrochloric acid
- GB/T 623 Chemical reagents: Perchloric acid*， 2024-09-29 Update
- GB/T 625 Chemical reagent sulfuric acid*， 2024-09-29 Update
- GB/T 626 Chemical reagent Nitric acid
- GB/T 629 Chemical reagent. Sodium hydroxide
- GB/T 631 Chemical reagent.Ammonia solution
- GB/T 639 Chemical reagent.Sodium carbonate anhydrous
- GB/T 646 Chemical reagent—Potassium chloride
- GB/T 648 Chemical reagent—Potassium thiocyanate
- GB/T 665 Chemical reagent.Copper(Ⅱ)sulfate pentahydrate
- GB/T 6682 Water for analytical laboratory use.Specification and test methods
- GB/T 6685 Chemical reagent.Hydroxylammonium chloride
- GB/T 672 Chemical reagent Magnesium chloride hexahydrate
- GB/T 676 Chemical reagent.Acetic acid
- GB/T 678 Chemical reagent—Ethanol*， 2023-08-06 Update
- GB/T 8979 Pure nitrogen and high purity nitrogen and ultra pure nitrogen
GB/T 28209-2023 history
- 2023 GB/T 28209-2023 Chemical analysis method of borosilicate glass
- 2011 GB/T 28209-2011 Methods for chemical analysis of borosilicate glasses