Detect gasoline pollution in the environment, how to operate the sulfur analyzer when doing gasoline analysis? Everyone can follow me with the following analysis.
The COD analysis method and the UV spectrum can be used to determine the content of the hydrocarbon in the liquid. The gasoline in the gas can be directly detected by hollow column chromatography, FID detector. The sulfur analyzer can be used in the soil as a headspace chromatographic method, which is the same as in gas detection. These tests are all national standards and can be found in the national standards for environmental protection tests.
If it is to determine the composition of gasoline by a sulfur analyzer, first, gasoline is not a substance but a low molecular hydrocarbon organic mixture, with thousands of components, and you need to test the concentration of that molecule. The main components of gasoline are hydrocarbon compounds (99.9%) containing trace metals (ppm grade). China's national standard on the analysis of gasoline hydrocarbon composition test using the United States astm standard reference formulation, with a sulfur analyzer to indicate its molecular content distribution. The sulfur analyzer is just a characterization parameter, not a specific indicator.
Sulfur analyzer analysis is a conditional experiment, that is, using a distillation range analyzer, under standard conditions, according to the provisions of the experimental conditions in the flask heating distillation of petroleum products, in the condenser tube condensation collected into the measuring cylinder, under the thermometer in the flask, Continuously measure the volume of the condensate oil at different temperatures during the temperature increase process, draw a temperature-volume curve, and identify the components of the petroleum component. The calculation of the molecular composition of the petroleum product can be roughly determined by the sulfur meter calculation. The exact test method is the internationally recognized PONA gas chromatographic method. PONA uses a specific column (cross-linked methyl silicone oil and other stationary phases) to separate the components of gasoline at a specified temperature, and to detect the contents of each component of the petroleum product using a FID detector. method. Its disadvantages are that the separation effect of individual components is not good, the qualitative analysis of olefins is poor, and the components above C12 are immature, but it is sufficient for gasoline. If necessary, the sulfur analyzer uses MS mass spectrometry to test individual components online. This analysis method has certain complexity.
The entire structure of the sulfur analyzer uses an integrated design, compact and harmonious, beautiful and generous. The furnace adopts a new thermal insulation structure, which is small in size and good in heat insulation. The gas flow in the furnace enters the cell from the top of the electrolytic cell, and the sulfur analyzer effectively prevents the backward flow of the electrolyte. Now most oil companies in China still use this as a benchmark for oil testing.
The COD analysis method and the UV spectrum can be used to determine the content of the hydrocarbon in the liquid. The gasoline in the gas can be directly detected by hollow column chromatography, FID detector. The sulfur analyzer can be used in the soil as a headspace chromatographic method, which is the same as in gas detection. These tests are all national standards and can be found in the national standards for environmental protection tests.
If it is to determine the composition of gasoline by a sulfur analyzer, first, gasoline is not a substance but a low molecular hydrocarbon organic mixture, with thousands of components, and you need to test the concentration of that molecule. The main components of gasoline are hydrocarbon compounds (99.9%) containing trace metals (ppm grade). China's national standard on the analysis of gasoline hydrocarbon composition test using the United States astm standard reference formulation, with a sulfur analyzer to indicate its molecular content distribution. The sulfur analyzer is just a characterization parameter, not a specific indicator.
Sulfur analyzer analysis is a conditional experiment, that is, using a distillation range analyzer, under standard conditions, according to the provisions of the experimental conditions in the flask heating distillation of petroleum products, in the condenser tube condensation collected into the measuring cylinder, under the thermometer in the flask, Continuously measure the volume of the condensate oil at different temperatures during the temperature increase process, draw a temperature-volume curve, and identify the components of the petroleum component. The calculation of the molecular composition of the petroleum product can be roughly determined by the sulfur meter calculation. The exact test method is the internationally recognized PONA gas chromatographic method. PONA uses a specific column (cross-linked methyl silicone oil and other stationary phases) to separate the components of gasoline at a specified temperature, and to detect the contents of each component of the petroleum product using a FID detector. method. Its disadvantages are that the separation effect of individual components is not good, the qualitative analysis of olefins is poor, and the components above C12 are immature, but it is sufficient for gasoline. If necessary, the sulfur analyzer uses MS mass spectrometry to test individual components online. This analysis method has certain complexity.
The entire structure of the sulfur analyzer uses an integrated design, compact and harmonious, beautiful and generous. The furnace adopts a new thermal insulation structure, which is small in size and good in heat insulation. The gas flow in the furnace enters the cell from the top of the electrolytic cell, and the sulfur analyzer effectively prevents the backward flow of the electrolyte. Now most oil companies in China still use this as a benchmark for oil testing.
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