GB/T 33646-2017 Translated English of Chinese Standard (GBT 33646-2017, GB/T33646-2017, GBT33646-2017): Determination of Ester Compounds in Motor Gasoline - Gas Chromatographyhttps://www.chinesestandard.net, 2017 M09 15 - 15 pages This Standard specifies the determination method of ester compounds (ethyl acetate, sec-butyl acetate, dimethyl carbonate) in the motor gasoline. This Standard is applicable to determine the motor gasoline, ester compounds with concentration of 50mg/L ~ 2000mg/L; this Method can also determine beyond such content range; however, the precision is not investigated. |
Contents
3 | |
Introduction | 4 |
Scope | 5 |
Terms and Definitions | 6 |
Apparatus | 7 |
Sampling | 8 |
Result Calculation | 9 |
Precision | 10 |
Test Report | 11 |
Appendix A Normative Establishment of Valve Blowback System and Instrument Parameters | 12 |
Gasoline | 15 |
Common terms and phrases
according to standard adjust the flowrate analysis conditions analytically pure analyzing the quality baseline blowback position calculate the concentration compounds in specimen concentration of 50mg/L concentration of ester control valve detector exit sample different instruments diluted dimethyl carbonate document ensure the error ensure the to-be-tested Establishment of Valve ester compounds ethyl acetate exit sample side Figure A.1 filled with Chromosorb GB/T hydrogen ion flame ion flame detector isooctane laboratory mass fraction Measure the flowrate mg/L motor gasoline n-nonane peak n-octane parameters shall ensure peak area perform necessary inspection Petroleum Products phase chromatographic column Polar chromatographic column positive blow position purity of 99 quality control sample ratio of 5:1 recorder pen returns Reference side Detector Sample injection device sec-butyl acetate SH/T shake evenly standard working curve standard working solution stationary phase chromatographic Table A.1 test results operated thermal conductivity detector to-be-tested components Valve Blowback valve switching Volumetric flask xylene volume ratio