LIBS Analysis of Geomaterials: Comparative Study of Basalt Plasma Induced by TEA CO₂ and Nd:YAG Laser in Air at Atmospheric Pressure

Table 1

Elemental composition of basaltic rock obtained using ICP-OES analysis [4].

(wt%)
SiO2	TiO2	Al2O3	Fe2O3	MnO	MgO	CaO	Na2O	K2O	P2O5
53	1.1	12.2	5.7	0.10	4.8	4.8	2.4	5.7	1.2
Concentration (μg/g)
Cr	Ni	Co	V	Cu	Zn	Ba	Sr	Zr	B
300	100	60	120	70	130	2000	740	160	127

relative expanded standard uncertainty ranged from 1–3%, in 100 ppm concentration range, to 7–15% for the highest measured concentrations.