High Pressure Asher (HPA-S) decomposition of biodiesel samples for elemental analysis by ICP OES
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Journal of the Brazilian Chemical Society
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The presence of some inorganic elements in biodiesel can compromise the fuel quality and
enhance the emission of pollutants. In this context, a new procedure for biodiesel sample preparation
using a high pressure asher (HPA) is presented, aiming the determination of Al, Ca, Cu, Fe, K, Mg,
Mn, Na, Ni, P, Sr, and Zn, in soybean, sunflower, animal fat, cotton and castor oil, by inductively
coupled plasma optical emission spectrometry (ICP OES). The digestion conditions of the HPA
were optimize to digest 1.5 g of biodiesel, with HNO3 and H2O2, at a temperature of 300 °C and
pressure of 435 psi, which considered the sample dilution factor, the total solids in solution and the
acidity for ICP OES determinations. Analytes concentrations in these biodiesels were calculated
using standard addition method. Detection limits from 0.05 to 0.7 mg kg–1 were suitable to attend
biodiesel quality parameters, government policy and legislations worldwide. Therefore, the
proposed procedure proved to be efficient to eliminate the major organic interferences typically
present in oil based samples allowing a fast, precise, interference-free and robust analytical
condition for biodiesel characterization.
Como referenciar
PACKER, ANA P.; SARKIS, JORGE E.S.; GINE, MARIA F.; SANTOS, EDER J. dos. High Pressure Asher (HPA-S) decomposition of biodiesel samples for elemental analysis by ICP OES. Journal of the Brazilian Chemical Society, v. 25, n. 4, p. 743-749, 2014. DOI: 10.5935/0103-5053.20140028. Disponível em: http://repositorio.ipen.br/handle/123456789/8980. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.