Table 1.

Maximum shifts ΔE _max (mV) obtained at the highest measured concentration for each anion, sensitivities (slope of linear region) and limits of detection (LOD) of 1.XB/HB_SAM under continuous flow (E _step=5 mV) and under standard, static conditions (E _step=2 mV).

Anion		Continuous Flow Voltammetry		Static Voltammetry
		1.XBSAM	1.HBSAM	1.XBSAM	1.HBSAM
HSO4−	ΔE max [mV][a]	−100±1	−115±2	−101±2	−119±2
	Sensitivity [mV mM−1][b]	4.08±0.13	3.84±0.73	4.68±0.13	5.26±0.09
	LOD [μM]	59.8±5.5	35.0±16.4	67.7±25.8	44.6±13.5
H2PO4−	ΔE max [mV][c]	−186	−189	−186	−203
	Sensitivity [mV mM−1]	49.9[e]	59.3[e]	36.0[f]	41.8[f]
	LOD [μM][d]	3.77	0.894	20.1	8.58
Cl−	ΔE max [mV][g]	−83[d]	−77	−94	−88
	Sensitivity [mV mM−1][b]	2.27	1.93	2.71	2.08
	LOD [μM]	89.6	48.0	210	195

Data analysis was carried out according to the AsymFit method. Errors, where shown, represent the average and one standard deviation of independent triplicate experiments. [a] At [HSO₄ ⁻]=50 mM. [b] For range of 0–11 mM. [c] At [H₂PO₄ ⁻]=23.4 mM. [d] For binding isotherms that were corrected by −10 mM, see Figure S5.3 and associated discussions. [e] For range of 10.5–13.4 mM. [f] For range of 9.5–13.4 mM. [g] At [Cl⁻]=33 mM.