Universal calibration for metal determination in fuels and biofuels by inductively coupled plasma atomic emission spectrometry based on segmented flow injection and a 350 °C heated chamber

• DOI: 10.1039/c2ja10336b
• Publication Date: 2012-04-16T15:06:05Z
• Authors: Raquel Sánchez; José Luis Todolí; Charles-Philippe ...; Jean-Michel Mermet
• Keywords: Standard solution; Condenser (optics); Vacuum chamber

The benefits of using a 350 °C heated single pass spray chamber following segmented flow injection methodology were demonstrated for the analysis petroleum products through inductively coupled plasma atomic emission spectrometry (ICP-OES). present work shows that small sample volume (i.e., 5 μl or less) can be precisely injected into system manual procedure. Two different introduction systems employed: Cyclonic and (a modified version Torch Integrated Sample Introduction System, TISIS) equipped with heating brass hollow cylinder. First effect temperature on peak shape sensitivity has been studied set nineteen organic (gasoline, superethanol, diesel biodiesel diluted in xylene). results have proved higher walls temperature, sensitivity. As result limits detection decreased below 7 μg l−1 elements such as manganese, vanadium silicon. Furthermore, memory effects less severe raised. Another benefit increasing TISIS is matrix became pronounced compared to chamber. Thus, at non-spectral interferences are eliminated likely because analyte transport efficiency close 100% irrespective analyzed. This two important consequences: (i) it possible obtain calibration line by merely modifying solution (ii) xylene based used universal standard. developed procedure was applied spiked derivatives recoveries silicon, copper range 95–106%.