Study of supercontinuum generation from a mode-locked Erbium-doped fiber laser based on monolayer graphene saturable absorber

Validation of microwave acid digestion, diffusive gradients in thin-film preconcentration and inductively coupled plasma optical emission spectrometry methodology for the determination of REEs in natural zeolites

“…The Er concentration in the Racos quarry exceeded the typical concentration found in the Earth's crust. 51,52…”

“…The Er concentration in the Racos quarry exceeded the typical concentration found in the Earth's crust. 51,52 Batapola et al 53 reported similar total REEs concentrations in Arangala granite (2183 mg kg −1 ) and phosphate deposits (4185 mg kg −1 ) from Sri Lanka as a potential low grade REE source due to their increasing demand and expected resource depletion. Ce (4.9-55.7 mg kg −1 ), Nd (3.1-25.5 mg kg −1 ) and La (2.81-32.1 mg kg −1 ) were reported as the main REEs in 19 typical rocks from the Monchegorsk massif, Russia, 54 grey granite from Western Cape, South Africa, 55 and Cappadocia, Turkey.…”