Linearity was studied using a pre-concentration of 10mL of
ultra-pure water fortified with a standard solution of pesticides
in the concentration ranges 0.9–6.0gL−1 for -cyhalothrin,
3.0–60.0gL−1 formethyl parathion, and 9.0–60.0gL−1 for other
pesticides (ethion and permethrin), which is a range similar to
that used by Tor