Fuel Analysis by Filter Furnace Electrothermal Atomic Absorption Spectrometry

摘要: ABSTRACT: The determination of Mn, Fe, Co, and Zn was performed in gasoline, jet, diesel fuel samples by electrothermal atomic absorption spectrometry using the Transverse Heated Filter Atomizer (THFA). Thermal conditions were experimentally defined for investigated elements. elements analyzed without addition chemical modifiers, organometallic standards calibration. Gasoline directly, while jet diluted 1+3 with n-heptane. following LODs obtained 40 µL injections: 0.08 µg/L 0.35 0.54 0.06 Zn. limits determination, calculated samples, 1.2 µg/kg 4.9 7.6 0.8 corresponding quantitation gasoline about four times higher. KEYWORDS: absorption, transverse heated filter atomizer, fuel, trace Introduction Electrothermal represents a suitable instrumental technique analysis petroleum products [1–5]. shows very low detection limits, similar to or even better than those found other spectroscopic techniques, such as Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) [6] ICP-Mass (ICP-MS) [7–12]. Some problems evidenced use ETAAS when like Ni [3] Pb [13] are analyzed, due different behavior organo-metallic species during thermal treatment samples. Recently, furnace automotive fuels proposed [14]. This showed interesting results volatile elements, Cd Pb. approach subject several papers continuous developments order improve design [15], extend range [16], employ atomizers [17], determine aqueous organic solutions [18,19]. most aspects concept are: capability inject large volumes volume zone allocated sampling, limited non-specific molecular filtering action furnace, no need modifiers design.