GB/T 8020-2015 English PDF

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GB/T 8020-2015: Determination of lead in gasoline -- Atomic absorption spectrometry
Status: Valid

GB/T 8020: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 8020-2015	239	Add to Cart	3 days	Determination of lead in gasoline -- Atomic absorption spectrometry	Valid
GB/T 8020-1987	199	Add to Cart	3 days	Gasoline. Determination of lead content. Atomic absorption spectrometry	Obsolete

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Basic data

Standard ID: GB/T 8020-2015 (GB/T8020-2015)
Description (Translated English): Determination of lead in gasoline -- Atomic absorption spectrometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: E31
Classification of International Standard: 75.160.20
Word Count Estimation: 11,111
Date of Issue: 2015-12-31
Date of Implementation: 2016-06-01
Older Standard (superseded by this standard): GB/T 8020-1987
Regulation (derived from): State Standard Announcement 2015 No.43
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 8020-2015: Determination of lead in gasoline -- Atomic absorption 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.
Determination of lead in gasoline - Atomic absorption spectrometry ICS 75.160.20 E31 National Standards of People's Republic of China Replacing GB/T 8020-1987 Determination of lead content of gasoline atomic absorption spectrometry Issued on. 2015-12-31 2016-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 8020-1987 "Determination of lead content of gasoline (atomic absorption spectrometry)." This standard and GB/T 8020- The main technical changes compared to 1987 are as follows. --- Increased Chapter 2, "Normative references", a reference to the standard GB/T 4756, GB/T 6682, GB/T 15337 (see para. Chapter 2); --- Summary of Method adds atomic absorption spectrometer used specification (see Chapter 3, Chapter 1, 1987 edition); --- Increase the Chapter 4, "Method" (see Chapter 4); --- Use 100μL pipette or pipette when the pipette trace solution. In GB/T 8020-1987 of 0.5 or 1.0mL shift Liquid pipe (see 51, 1987 version 4.1.); --- Modify the lead content of gasoline blank, this standard requires less than 1.32mg/L, in GB/T 8020-1987 in below 1.25mg/L (see 66, 1987, version 3.6.); --- Modify the concentration of lead standard solution, this standard is 2.6mg/L, 5.3mg/L, 13.2mg/L and 26.4mg/L, in GB/T 8020-1987 for 5.28mg/L, 13.21mg/L and 26.42mg/L (see 612, 1987 Edition 4.4.3.); --- Added "quality control samples" for validating and testing instrument systems (see 6.13); --- Increased the use of the reagent blank sample to adjust the mixture flow and transmission rate (see 8.2.1); --- Specifies the combustion head height adjustment with 26.4mg/L lead standard solution in GB/T 8020-1987 not specified concentrations (see . 822, 1987 edition 5.2); --- Canceled GB /formulas in 8020-1987 T X = C × 10 (see Chapter 10, Chapter 7, 1987 edition); --- Abolition of the "arithmetic mean of the results of repeated measurements twice, as a result of the sample" GB/T 8020-1987 report within Yung, the words "the report calculated the sample obtained from Chapter 10, the lead content to the nearest concentration of 0.1mg/L. (See para. 12 , Chapter 9, 1987 in the chapter); --- Modify the repeatability and reproducibility values \u200b\u200bof this standard were 1.3mg/L and 2.6mg/L, GB/T 8020-1987 for 1.25mg/L and 2.5mg/L (see 13.1.1 and 1312, 1987 version 8.1 and 8.2.); --- Added "bias" content (see 13.2); --- Added "Appendix A", used for quality control monitoring (see Appendix A). This standard uses redrafted law modifying the lead content standard "gasoline in American Society for Testing Materials Standards ASTMD3237-12 Measuring method (atomic absorption spectrometry). " This standard when using ASTMD3237-12 been modified. The main technical differences between this standard and its ASTMD3237-12 The following reasons. --- Removed ASTMD3237-12 1.2 on the International System of Units described in this standard has been adopted by the International System of Units; --- Chapter 2 normative references are cited of the corresponding national standards to meet our technical requirements; --- Increased Chapter 12, "Report", the report provides analysis results are accurate to 0.1mg/L; --- Remove the keyword ASTMD3237-12 Chapter 13, because the content is not part of our standard. This standard by the National Standardization Technical Committee on products and lubricant oil (SAC/TC280) proposed. This standard by the National Petroleum Products and Lubricants Standardization Technical Committee of petroleum fuels and lubricants Technical Committee (SAC/TC280/SC1) centralized. This standard was drafted. China Research Institute of Petroleum Corp. petrochemical, Shenzhen Academy of Metrology and Quality Inspection. The main drafters of this standard. Gao Ping, risk Ye Xin, Huang Kaisheng, Zhao Yan, Zhang Shiyuan, Li Siyuan. This standard replaces the standards previously issued as follows. --- GB/T 8020-1987. Determination of lead content of gasoline atomic absorption spectrometry WARNING --- This standard relates to certain hazardous materials, operations and equipment, but does not make recommendations on all safety issues involved. because Here, in the past the use of this standard, the user should establish appropriate safety and protective measures, and determine the applicability of regulatory limitations related. For some Special precautionary statements, see 6.6 and 6.9.

1 Scope

This standard specifies the method of atomic absorption spectrometry determination of lead content in gasoline use. This standard applies to the determination of the quality of gasoline in concentrations ranging from total lead content of 2.5mg/L ~ 25mg/L of. The measurement results of this standard It is not affected by differences in the composition of gasoline and different types of alkyl lead compounds.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 4756 petroleum liquids hand sampling method Laboratory use specifications and test methods GB/T 6682-2008 Analysis GB/T 15337 General Atomic absorption spectrometry

3 Method Summary

A gasoline sample was diluted with methyl isobutyl ketone, sample containing lead alkyls need to add iodine and methyl trioctyl ammonium chloride as a stabilizer. And by the above analytical purity lead chloride standard solution prepared by atomic absorption spectrometry at a wavelength of 283.3nm detected at sample containing lead the amount. With the above approach, gasoline all alkyl lead compounds can give the same response. Atomic absorption spectrometer using procedures detailed in GB/T 15337.

4 Methods

This standard provides the means for the detection limit prescribed unleaded petrol of trace lead.

5 Instruments

5.1 Atomic absorption spectrometer. with the expansion of the scale, adjustable nebulizer, promising configured using air-acetylene flame burner slit and materials Premix chamber. 5.2 flask. 50mL, 100mL, 250mL and 1000mL. 5.3 Pipette. 2mL, 5mL, 10mL, 20mL and 50mL. 5.4 micro pipettes. 100μL pipette or pipette. ......

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