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Articles by Lanping Feng
A single-stage purification method for the precise determination of zirconium isotopic composition in geological samples by double spike MC-ICP-MS
A single-stage purification method for the precise determination of zirconium isotopic composition in geological samples by double spike MC-ICP-MS† Interest in studying zirconium (Zr) stable isotopic fractionation in both low and high-temperature environments has increased significantly in recent years. Multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) is the preferred technique for stable Zr isotope analysis due to its low sample consumption and high precision.
A fast double-stack column chemical separation of Zn and Mo from geological samples for isotopic analysis by MC-ICP-MS
A fast double-stack column chemical separation of Zn and Mo from geological samples for isotopic analysis by MC-ICP-MS A time-saving and high-efficient chemical separation procedure to isolate Zn and Mo from various geological samples is developed, which is based on a single pass of a double-stack column.
Further Characterizing Eppawala-AP as a Potential Cl-Rich Apatite Sr Isotope Reference Material
Further Characterizing Eppawala-AP as a Potential Cl-Rich Apatite Sr Isotope Reference Material Lan Yang, Yang Li, Fangyue Wang, Hai-Ou Gu, Wen Zhang, Lanping Feng, Chaofeng Li, Zhaochu Hu and Xian-Hua Li Abstract Strontium isotope composition is a powerful proxy to track the source and evolution of a range of geological processes in magmatic, sedimentary and metamorphic environments.
Further Characterization of SA01 and SA02 Zircon Reference Materials for Si and Zr Isotopic Compositions via Femtosecond Laser Ablation MC-ICP-MS
Further Characterization of SA01 and SA02 Zircon Reference Materials for Si and Zr Isotopic Compositions via Femtosecond Laser Ablation MC-ICP-MS Here we present Si and Zr isotopic data of SA01 and SA02 zircons via multi-technique analytical methods to evaluate the suitability of the two zircon reference materials for in situ Si and Zr isotopic analysis using femtosecond laser ablation multi-collector inductively coupled plasma mass spectrometry (fs-LA-MC-ICP-MS).
Use of a Cu-selective resin for Cu preconcentration from seawater prior to its isotopic analysis by MC-ICP-MS
Use of a Cu-selective resin for Cu preconcentration from seawater prior to its isotopic analysis by MC-ICP-MS Determination of the copper (Cu) isotopic composition (δ65Cu) of seawater is difficult due to low Cu concentrations (0.3 to 7.6 nmol kg-1) and high salt content. Here, we present a new procedure for matrix separation and Cu preconcentration based on a combination of a Cu-selective resin column and an AG MP-1M anion exchange resin column.
High-precision stable zirconium isotope ratio measurements by double spike thermal ionization mass spectrometry
High-precision stable zirconium isotope ratio measurements by double spike thermal ionization mass spectrometry A new analytical method for the accurate and precise determination of stable zirconium isotope ratios in geological materials by thermal ionization mass spectrometry (TIMS) is presented. Isobaric interferences from Mo were largely eliminated during filament heating and further reduced by the off-line Mo interference correction.
A simple single-stage extraction method for Mo separation from geological samples for isotopic analysis by MC-ICP-MS
A simple single-stage extraction method for Mo separation from geological samples for isotopic analysis by MC-ICP-MS† Lanping Feng,a Lian Zhou, *a Wenfeng Hu,a Wen Zhang, a Baichan Li,a Yongsheng Liu, a Zhaochu Hu a and Lu Yang b Author affiliations * Corresponding authors a State Key Laboratory of Geological Processes and Mineral Resources, School of Earth Sciences, China University of Geosciences, Wuhan 430074, China E-mail: zhcug@163.com Fax: +86-27-67885096 Tel: +86-27-67885096 b...
A simple single-stage extraction method for Mo separation from geological samples for isotopic analysis by MC-ICP-MS
A simple single-stage extraction method for Mo separation from geological samples for isotopic analysis by MC-ICP-MS A new, simple and efficient separation method to isolate Mo from complex geological sample matrices for high precision Mo isotope ratio measurements is described.
High-precision Ca isotopic measurement using a large geometry high resolution MC-ICP-MS with dummy bucket
Wide application of Ca stable isotopes requires reliable production of high-precision data and in recent years multiple collector inductively coupled plasma mass spectrometers (MC-ICP-MS) have been used as an alternative to traditional thermal ionization mass spectrometry. The main challenges in using MC-ICP-MS to measure Ca stable isotopes are scattered ions and peak tailing of high level Ar and Ca ion beams, along with variable interferences.
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