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Actual quality
This section analyzes the actual quality of diesel sold at fuel stations in Iran. Sampling was mainly done in Tehran and Isfahan. A total of 92 diesel samples were collected and analyzed between 2010 and 2021. The figures below show the location of the sampling and the number of samples taken. The size of the bubble reflects the number of samples taken in that area.
Location of diesel sampling in Iran, 2010-2021
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Description: Actual quality
Source: SGS Worldwide Fuel Survey, 2022
Number of samples taken, 2010-2021
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Description: Actual quality
Source: SGS Worldwide Fuel Survey, 2022
Sulfur
Sulfur is the third most commonly found element in crude petroleum after carbon and hydrogen. However, it increases metal corrosion in engines, fuel systems and after-treatment systems; and increases sulfur-oxide emissions. For these reasons, governm
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Actual quality