GB/T 8020-2015Determination of lead in gasoline - Atomic absorption spectrometry (English PDF)

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