Resumo (PT):
Abstract (EN):
An easy and selective molecularly imprinted dispersive extraction method (MIDE) coupled with HPLC-DAD was developed
for melamine´s analysis in commercial milk samples. The molecularly imprinted polymer (MIP) was synthetized by
suspension polymerisation with melamine as template, while methacrylic acid, ethylene glycol dimethacrylate and
chloroform were used as monomer, cross-linker and porogenic solvent, respectively. The analytical methodology was
validated presenting a limit of detection of 0.6 mg/kg. The recovery percentage in spiked milk samples ranged from 92.9%
to 102.0% with an intermediate precision of 5.0%. The analysis of real samples with MIDE revealed melamine´s presence
in 20% of the cases with a maximum concentration of 9.3 ± 0.3 mg/kg, which exceeds the maximum recommended level
of 2.5 mg/kg.
Idioma:
Inglês
Tipo (Avaliação Docente):
Científica
Nº de páginas:
11