Development of a Low-Cost SIA-Based Analyser for Water Samples

Table 1

Analytical figures of merit for the automated methods developed for chloride, nitrite, and nitrate in water samples. LD, LQ: detection (3σ) and quantification (10σ) limits. Precision was measured as repeatability (𝑛=10).

Analyte/Figure of merit	LD; (𝜇g L^−1)	LQ; (𝜇g L^−1)	Linear range; (𝜇g L^−1)	Precision 𝑠𝑟; (%)	Difference with reference method (%)	Sampling rate (hour^−1)
Chloride	0.6	1.90	1.9–54	1.4	2.0	60
Nitrite	0.02	0.076	0.11–3.8	2.9	−2.8	60
Nitrate	0.5	1.6	1.6–54	2.4	−0.3	20