Use of Hg-Electroplated-Pt Ultramicroelectrode for Determining Elemental Sulphur in Naphtha Samples

Table 2

Linearity study of synthetic samples using elemental sulphur.

𝑆concentration/mg L^−1	blank	0.125	0.250	0.375	0.500
Area average/nW	0.137	0.368	0.485	0.739	0.959
RSD	11%	3.0%	2.2%	0.36%	0.84%
𝐶cal	0.311	—	—		—
𝐶crit	0.746	—	—		—

* All area values were considered with 95% confidence; RSD: relative standard deviation, 𝐶_cal: calculated value of Cochran, and 𝐶_crit: critical value of Cochran.