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. 2025 Aug 25;47(10):411. doi: 10.1007/s10653-025-02723-2

Table 5.

Repeatability and reproducibility of arsenic species in this study

Analyte	Repeatability				Reproducibility
	SD (µg/L)	RSD (%)	CI^*		SD (µg/L)	RSD (%)	CI^*
	SD (µg/L)	RSD (%)	Lower Bound	Upper Bound	SD (µg/L)	RSD (%)	Lower Bound	Upper Bound
As^V	0.231	0.752	0.142	0.449	0.019	7.28	0.246	0.505
MMA	0.235	0.753	0.144	0.455	0.028	10.92	0.232	0.484
As^III	0.241	0.797	0.130	0.433	0.022	8.32	0.245	0.506
DMA	0.239	0.743	0.151	0.472	0.020	7.55	0.253	0.520

^*CI values represent the margin of error (95% confidence interval) for the measured concentration