In this application news, laser diode thermal desorption (LDTD) was coupled with an LCMS-8060 triple quadrupole mass spectrometer (LDTD-MS) to conduct high-speed analysis of melamine in powdered milk. With the LCMS-8060, MRM optimization was first performed using dual ion sources (DUIS) of ESI and APCI with a standard sample of melamine. Subsequently, melamine added to powdered milk was extracted and analysis was carried out using LDTD-MS. With a short ionisation time of just six seconds, the method showed good repeatability (%RSD < 10%) and observed good linearity (R2 = 0.998), proving to be a reliable and efficient method for melamine analysis.
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