Research on the Hydrochemistry and Fault Control Mechanism of Geothermal Water in Northwestern Zhangzhou Basin

Table 1

Precision, accuracy, and detection limits for the elemental chemical analyses.

Chemical elements	Precision (%)	Accuracy (%)	LOD
Li^+	9	5.9	0.001
Na^+	5	9.5	0.005
K^+	1	10	0.03
Mg^2+	2.2	1.6	0.002
Ca^2+	2.3	5.9	0.7
F^-	8.3	-1.6	0.01
Cl^-	1.3	0.4	0.03
NO^2-	2.6	3.6	0.01
NO^3-	0.9	-0.7	0.01
SO4^2-	1	1.6	0.03
PO4^3-	2.1	5.5	0.02
HCO3^-	3	3	1
Si	1.6	10.5	200
Sr	1.8	3.4	0.04

LOD: limit of detection (estimated according to the statistical methodology suggested by IUPAC [19]; major elements (mg/kg); trace elements (μg/kg)).