SIMS study of self-consisted fractionation of iron and titanium isotopes in ilmenites

In situ Ti isotopic analysis by femtosecond laser ablation MC-ICP-MS

“…However, the low analytical precision of SIMS (d 50/49 Ti, 2SE > 0.5&) hinders its wide application. [30][31][32][33][34][35][36] Since the development of multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) in the 1990s, 37 the last decade has seen a dramatic increase of isotopic analysis on a wide range of minerals. With the aim of in situ measuring mass-dependent and -independent Ti isotopic variations for extraterrestrial samples, a series of nanosecond (ns) LA-MC-ICP-MS techniques were developed with typical analytical precisions of $0.57& (2SD) for d 49/47 Ti (d, in parts in 10 3 usually used for reporting mass-dependent fractionation) 12 and $0.2& (2SD) for 3 50 / 47 Ti (3, in parts in 10 4 usually used for reporting massindependent fractionation), 9,38 respectively.…”

“…However, the low analytical precision of SIMS ( δ 50/49 Ti, 2SE > 0.5‰) hinders its wide application. 30–36…”

Effects of Ultrasound on Desliming Prior to Feldspar Flotation

“…Some researchers also suggested that ultrasonic pre-treatment can help improve the flotation performance [53][54][55]. Ultrasonic waves in water or in a pulp can initiate or significantly intensify different physicochemical phenomena, such as reduction and oxidation, activation, and surface cleaning, or even disintegrate the minerals [56]. The use of ultrasonic treatment to enhance the beneficiation of different minerals has been extensively studied [47,57,58].…”