<b>A luminescence photometer was developed based on lanthanide-sensitized
luminescence to detect environmental pollutants and residues in foods including,
in particular, two classes of antibiotics: tetracyclines and fluoroquinolones.
Multiple excitation sources, a xenon flashlamp and ultraviolet light-emitting
diodes (UV LEDs), were used to their advantages. A photomultiplier tube module,
gated to reject time-domain interferences, was used as a photodetector. Using
danofloxacin as a model analyte, luminescence signal was linear in more than
three decades (0.5-2000 ng/mL) with</b>
<b><i>R</i><sup>2</sup> > <i>0.998</i> in each decade. This photometer achieved a
limit of detection of 2.0 ng/mL with 1.3% average relative standard deviation.
It is field deployable at 4.6 kg and 15 W power consumption.</b>
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