Accurate and precise determination of the boron isotope ratio by QQQ-ICP-MS: application to natural waters and carbonates

Abstract

This is a novel method for precise determination of the boron isotope ratio by QQQ-ICP-MS at a nanogram level of boron.

Precise determination of lithium isotope ratios at the sub-nanogram level by QQQ-ICP-MS: application to natural waters and carbonates

“…HNO 3 , evaporated to dryness again, and then dissolved in 100 μL of 0.5 mol L −1 HCl for loading; and (iii) samples of micro-sublimation residue from the boron purification step dissolved in 100 μL of 0.5 mol L −1 HCl for loading. 43 Each column eluted sample was analyzed in triplicate on the mass spectrometer following the SSB protocol and a ±10% concentration matching between the samples and the NIST standard. The average mass consumption during mass spectrometric determination was ≤0.2 ng per analysis.…”

Determination of Trace Elemental Composition of CaCO3: Application to Mass Limited Abiogenic and Biogenic Carbonates

“…Under a microscope, the samples were cracked open and treated for clay removal. Subsequently, oxidative cleaning was performed using 1% H 2 O 2 in 0.1 N NaOH, as described by Chanakya and Misra (2022). The samples were then leached with 0.001 N HNO 3 and analyzed for Mg/Ca using both ICP‐OES at 60 ppm Ca and ICP‐QQQ‐MS at 20 ppm Ca.…”

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

“…An X skimmer, Jet cones and two 10 13 U ampliers enhanced sensitivity and SNR resulting in d 11 B external repeatability of ±0.24& using <1.2 ng B. Chanakya and Misra. 177 used a QQQ-ICP-MS instrument to determine d 11 B in solutions containing HF and HNO 3 used to provide high sensitivity and rapid washout of the notoriously sticky boron. These workers also used a microdistillation system to concentrate boron, and produced d 11 B with 2 sd reproducibility of ±0.4& from samples containing between 2 and 100 ng B.…”