highly significantP <0.01
The result of the probit analysis applied to these data gave a chi-square value of 16,217 ( P =0.300), which justifies that the data conform to the probit model, and the probit equations were obtained for each repetition: P =−3.929+2.09( μ g/mL), P =−3.935+2.09( μ g/mL), and P =−3.924+2.09( μ g/mL), highly significant results ( P <0.01).