Introduction to Analysis of Benzene and Toluene Content in Gasoline:
Benzene and toluene are toxic and harmful substances that can cause a decrease in white blood cells and a decline in immune function when inhaled by the human body. Benzene, toluene and other benzene derivatives are also carcinogens. The World Health Organization and the US EPA believe that human exposure to 1ug/m3 of benzene can increase the risk of leukemia to 4-8 people per million. After phasing out leaded gasoline, in order to maintain the octane rating of gasoline, a large amount of aromatic compounds (30% to 50% by volume) are added to gasoline. After gasoline combustion, a large amount of benzene and toluene are emitted into the ambient air from the exhaust of cars.
Our company uses a dedicated gas chromatography method to determine the content of benzene and toluene in gasoline. During the measurement process, the sample components will not remain in the instrument, ensuring the stability of the instrument. Due to the use of FID detector, the analysis sensitivity is extremely high, and the detection limit for benzene and toluene content can reach 10-6 levels. The analysis precision RSD is less than 5.0%. The analysis method is simple and easy to operate, and the analysis time for each sample is about 10 minutes. This method can meet the needs of determining the content of benzene and toluene in gasoline in various situations.
| No. (Continuous Injection Number) | Benzene (mg/ml) | Toluene (mg/ml) |
| 1 | 2.97 | 72.5 |
| 2 | 2.94 | 71.5 |
| 3 | 3.07 | 74.1 |
| 4 | 2.96 | 73.1 |
| 5 | 3.18 | 77.2 |
| 6 | 2.90 | 69.9 |
| average | 3.00 | 73.1 |
| Relative standard deviation RSD (%) | 3.44 | 4.66 |
