The results showed no
significant change neither on the CPE performance nor on the
analytical response of the studied ARV at extraction temperatures
above 65 C. Therefore, 65 Cwere chosen for further assays. For the
extraction time, it was observed that by increasing it, the relative
response is subsequently increased, reaching the maximum
analytical responses of the studied ARV at 20 min; after which, and
remained invariant. Thus, in the following experiments, an
extraction time of 20 min was selected for the extraction.