Consider using an ISE for determining bromide ion based on \(\mathrm{AgBr} / \mathrm{Ag}_{2} \mathrm{~S}\) crystalline membrane. The \(K_{\mathrm{sp}}\) for \(\mathrm{AgBr}\) is \(7.7 \times 10^{-13}\). What is the approximate detection limit for bromide ion in the absence of interfering ions? What would the bromide detection limit be in the presence of \(0.01 \mathrm{M} \mathrm{KCl}\), given that \(\mathrm{K}_{\mathrm{BrCl}}^{\mathrm{POT}}=3 \times 10^{-3}\) ?