Table 1.

List of NaHS solutions prepared in standard bath solution (first row), the measured sensor current ± standard error of the mean (s.e.m.) (middle row) and the calculated amount of H₂S (last row).

NaHS, μM	Sensor current, nA (±s.e.m.)	H2S, μM
10	13.67 ± 0.33	2
48.7	88.67 ± 2.4	11
95.23	183.33 ± 9.61	21
170.2	303.33 ± 11.02	38
226	359.33 ± 11.66	51
300	394.00 ± 8.62	67