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Monitoring fuel quality: a case study for quinizarin marker content of unleaded petrol marketed in Greece

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Abstract

Fuel adulteration and cross-contamination lead to low-quality fuel products, which may cause increased environmental pollution, loss of taxes and engine problems. An establishment of a quality monitoring mechanism based on laboratory measurements may reveal problematic areas of the fuel supply chain. For the purposes of this work, 97 unleaded petrol samples were measured in order to quantify mass concentration of quinizarin, a substance used in Greece to easily mark the presence of 95 Research Octane Number unleaded petrol in other types of automotive fuels. The samples were obtained from petroleum retail stations selling different brands of fuels and located in different geographic regions of Greece. Statistical analysis of the results revealed quinizarin mass concentrations below the 3 mg L−1 legislation specification limit and significant differences between brands and geographic regions, which may attributed to the structure of the fuel supply chain in Greece in combination with quinizarin properties and way of handling. Moreover, certain approaches were used for the calculation of decision limits for assessing compliance or non-compliance. These approaches take measurement reproducibility or estimated in-house uncertainty into account, in order to minimize the probability of false rejection.

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Authors and Affiliations

  1. Laboratory of Fuels and Lubricants Technology, School of Chemical Engineering, National Technical University of Athens, Iroon Polytechneiou 9, 15780, Athens, Greece

    Ioannis Haloulos, Dimitrios Theodorou, Ypatia Zannikou & Fanourios Zannikos

  2. 59 Antoni Tritsi Street, 15238, Halandri, Athens, Greece

    Dimitrios Theodorou

Authors
  1. Ioannis Haloulos
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  2. Dimitrios Theodorou
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  3. Ypatia Zannikou
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  4. Fanourios Zannikos
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Correspondence to Dimitrios Theodorou.

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Haloulos, I., Theodorou, D., Zannikou, Y. et al. Monitoring fuel quality: a case study for quinizarin marker content of unleaded petrol marketed in Greece. Accred Qual Assur 21, 203–210 (2016). https://doi.org/10.1007/s00769-016-1199-7

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  • DOI: https://doi.org/10.1007/s00769-016-1199-7

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