Strict warning: No AI$.$ Urgent answer required.

AW$02$

$"$In order to quantify Cd by flame absorption spectroscopy, the following results were obtained using the Cd standard solution. The following test line equation was obtained using the least squares analysis of the experimental data. A $=0\mathrm{.}2028$Ccd $-0\mathrm{.}0003$

Here, Ccd is the concentration of Cd in ppm and A is the absorbance measurement of the analysis signal

Cd$($ppm$)$ Number of repeated measurements the average value of A s $($standard deviation$)$

$0\mathrm{.}0250\mathrm{.}0020\mathrm{.}0003$

$0\mathrm{.}5100\mathrm{.}1020\mathrm{.}002$

$1\mathrm{.}00100\mathrm{.}1980\mathrm{.}003$

$1\mathrm{.}50100\mathrm{.}2960\mathrm{.}006$

$2\mathrm{.}00100\mathrm{.}4040\mathrm{.}007$

$2\mathrm{.}50100\mathrm{.}5060\mathrm{.}008$

sample $100\mathrm{.}3550\mathrm{.}006$

a$)$ Test sensitivity

b$)$ Analysis sensitivity at $2$ ppm concentration

c$)$ Size of signal at detection limit

d$)$ The detection limit and LOQ of this analysis method

e$)$ Calculate the concentration of Cd in the sample"