Font Size: 

A novel mosquito repellent formulation was developed that is applied via a liquid wick-based vaporizer. The formulation is a ternary mixture containing Lapa essential oil, an aliphatic carrier and an alcohol. It is essential that the formulation releases the active at a constant rate over a long period of time. To check this, the change in composition was followed over time. The composition, at various stages, was determined from FTIR spectra. An inverse mapping approach that employed partial least square regression (PLSR) was used. The results show that the active ingredient content of the oil mixture remained essentially constant over the oil application life time.

Inverse identification; Partial least square regression; Composition; FTIR