Table 2. Experimental parameters.

ICP-MS (Thermo Fisher Scientific iCAP-Qc)

RF power (W): 1,400

Cooling gas flow rate (L/min): 14

Auxiliary gas flow rate (L/min): 0.8

He carrier gas (L/min): 0.6

Ar make up gas (L/min): 1.00–1.05

Sampling depth: 5

LASER (In House Laser Ablation System)

Wavelength (nm): 266

Pulse width (fs): 190

Repetition frequency (Hz): 10

Spot size (μm): 15

Scan speed (μm/s): 10