GB/T 4698.6-2019 in English
VALIDMethods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 6:Determination of boron content—Methylene blue spectrophotometry and inductively coupled plasma atomic emission spectrometry
- Issued on:2019-10-18
- Implemented on:2020-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$146.00
《GB/T 4698.6-2019海绵钛、钛及钛合金化学分析方法 第6部分：硼量的测定 次甲基蓝分光光度法和电感耦合等离子体原子发射光谱法》由TC243（全国有色金属标准化技术委员会）归口，TC243SC3（全国有色金属标准化技术委员会稀有金属分会）执行，主管部门为中国有色金属工业协会。
Introduction
Interpretation of the National Standard of the People's Republic of China GB/T 4698.6—2019
This standard specifies the determination method of boron content in sponge titanium, titanium and titanium alloys, including methylene blue spectrophotometry and inductively coupled plasma atomic emission spectrometry. It is applicable to samples with a boron mass fraction range of $0.0010\% \sim 0.200\%$.
Background of Standard Update
| Comparison Content | Old Version (GB/T 4698.6—1996) | New Version (GB/T 4698.6—2019) |
|---|---|---|
| Measurement Range | $0.0020\% \sim 0.10\%$ | $0.0010\% \sim 0.200\%$ | Method Improvement | Only Methylene Blue Spectrophotometry | Newly Added Inductively Coupled Plasma Atomic Emission Spectrometry |
| Allowable difference requirements | Unspecified | More stringent precision requirements, increase repeatability and reproducibility data |
Explanation of professional terms and practical applications
Methylene blue spectrophotometry:Based on the formation of fluoroborate complex ions by boron and hydrofluoric acid, the boron content is determined by the color reaction of methylene blue. Applicable to medium and high boron content range.
Inductively coupled plasma atomic emission spectrometry (ICP-AES):Uses a high-temperature ionization source to atomize the sample and detect the intensity of the characteristic spectral lines of the boron element, which is suitable for accurate determination of low boron content.
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