Table 1 shows the factors studied as well as their
respective scores. In the second 23 full factorial design study,
10mL of ultra-purewaterwas spiked with a 5L standard solution
(2gmL−1 of -cyhalothrin and 4gmL−1 of ethion, permethrin,
and methyl parathion), with final concentrations of 0.001gmL−1
(-cyhalothrin) and 0.002gmL−1 (ethion, methyl parathion, and
permethrin). Table 2 shows the factors studied, as well as their
respective scores.