GB/T 38394-2019 English PDF

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GB/T 38394-2019: Coal tar - Determination of sodium, calcium, magnesium and iron content - Inductively coupled plasma optical emission spectrometry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 38394-2019	199	Add to Cart	3 days	Coal tar - Determination of sodium, calcium, magnesium and iron content - Inductively coupled plasma optical emission spectrometry	Valid

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Basic data

Standard ID: GB/T 38394-2019 (GB/T38394-2019)
Description (Translated English): Coal tar - Determination of sodium, calcium, magnesium and iron content - Inductively coupled plasma optical emission spectrometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G18
Classification of International Standard: 71.080
Word Count Estimation: 10,191
Date of Issue: 2019-12-31
Date of Implementation: 2020-07-01
Quoted Standard: GB/T 602; GB/T 1999; GB/T 6682; GB/T 8170
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
Summary: This standard specifies a method for the determination of sodium, calcium, magnesium and iron content in coal tar by inductively coupled plasma emission spectrometry. This standard is applicable to the determination of sodium, calcium, magnesium and iron content in medium and low temperature coal tar and high temperature coal tar with water content less than 0.5%.

GB/T 38394-2019: Coal tar - Determination of sodium, calcium, magnesium and iron content - Inductively coupled plasma optical emission spectrometry

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Coal tar-Determination of sodium, calcium, magnesium and iron content-Inductively coupled plasma optical emission spectrometry ICS 71.080 G18 National Standards of People's Republic of China Determination of sodium, calcium, magnesium and iron in coal tar Inductively coupled plasma emission spectroscopy 2019-12-31 release 2020-07-01 implementation State Administration of Market Supervision Published by the National Standardization Administration

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by China Iron and Steel Industry Association. This standard is under the jurisdiction of the National Coal Chemical Standardization Technical Committee (SAC/TC469). This standard was drafted. Beijing Low Carbon Clean Energy Research Institute, Metallurgical Industry Information Standards Research Institute, Dalian Honghe Petroleum Analysis Instrument Co., Ltd., Shanxi Jianlong Industrial Co., Ltd., Northwest University, Coal Science and Technology Research Institute Co., Ltd., Lihong Zhixin (Beijing) Technology Co., Ltd. the company. The main drafters of this standard. Gai Qingqing, Jin Axiang, Kong Deting, Zhao Shuai, Ma Linge, Liu Congyun, Ma Xiaoxun, Sun Ming, Wang Zhanxiang, Zhang Yongqi, Zheng Jingxu, Dong Xiaofeng, Bayan Gaole, Li Yonglong, Ding Hua, Zhang Jing, Zhou Lu, Xue Mei. Determination of sodium, calcium, magnesium and iron in coal tar Inductively coupled plasma emission spectroscopy Warning --- some reagents used in this standard are toxic and flammable, this standard does not reveal all possible safety issues, use Operators should exercise caution and be responsible for taking appropriate safety and health measures.

1 Scope

This standard specifies the method for determining sodium, calcium, magnesium and iron content in coal tar by inductively coupled plasma emission spectrometry. This standard applies to the determination of sodium, calcium, magnesium, and iron content in low- and medium-temperature coal tar and high-temperature coal tar with a water content of less than 0.5%.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 602 Preparation of standard solutions for the determination of impurities in chemical reagents GB/T 1999 Coking oil products sampling method GB/T 6682 Analytical laboratory water specifications and test methods GB/T 8170 Numerical rounding rules and expression and judgment of limit values

3 Principle

The sample to be tested is dissolved in acid after being burned by open flame and ashing at high temperature, and then diluted with a volumetric flask to form a test solution. Test solution is atomized After the system is atomized, an aerosol is formed, which is carried into the plasma of the spectrometer by the carrier gas, and is fully evaporated, atomized, and excited in a high temperature and inert argon atmosphere. And ionization, when the atom or ion of the element to be measured is excited, the electrons transition at different energy levels within the atom, and are produced when the high energy state transitions to the low energy state. Generate characteristic radiation, through the wavelength and relative intensity of characteristic radiation, qualitative and quantitative analysis of each element can be performed.

4 Reagents and materials

4.1 Experimental water. meet the requirements of GB/T 6682 secondary and above water. 4.2 Concentrated hydrochloric acid. 1.179g/cm3, excellent grade pure. 4.3 Quantitative filter paper. ϕ110mm. 4.4 Sodium standard solution. 1000 μg/mL, GSB04-1738-2004 or other commercially available standard samples (or prepared according to GB/T 602) be usable. 4.5 Calcium standard solution. 1000 μg/mL, GSB04-1720-2004 or other commercially available standard samples (or prepared according to GB/T 602) be usable. 4.6 Magnesium standard solution. 1000 μg/mL, GSB04-1735-2004 or other commercially available standard samples (or prepared according to GB/T 602) be usable. 4.7 Iron standard solution. 1000 μg/mL, GSB04-1726-2004 or other commercially available standard samples (or prepared according to GB/T 602) be usable. ......

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