搜索结果: 1-15 共查到“地质学 Mass spectrometry”相关记录15条 . 查询时间(0.078 秒)
Simultaneous determination of 58 major and trace elements in volcanic glass shards from the INTAV sample mount using femtosecond laser ablation-inductively coupled plasma-mass spectrometry
volcanic glass tephra LA-ICP-MS element abundance femtosecond lasert
2017/4/10
Four volcanic glass samples on the INternational focus group on Tephrochronology And Volcanism (INTAV) sample
mount described by Kuehn et al. (2011) were analyzed to establish a new methodology for m...
Origin of unusual fractionation of Pb isotope ratios with calcium in thalliumspiked multiple collector-inductively coupled plasma mass spectrometry
Pb isotope, fractionation, MC-ICPMS
2017/4/10
We report the origin of significant fractionation of Pb isotope ratios in Ca-doped 0.08 mol L–1 HNO3 solutions. We
applied Tl-spiked standard bracketing mass fractionation correction using solution-b...
Determination of relative Faraday cup efficiency factor using exponential law mass fractionation model for multiple collector thermal ionization mass spectrometry
Faraday cup efficiency TIMS Sr isotope exponential
2017/4/10
A new method for determining the relative Faraday cup efficiency (RFCE) for nine Faraday cups has been developed
using 86Sr, 87Sr, and 88Sr isotope signals, and the exponential mass fractionation law...
Microanalysis of Pb isotope ratios of low-Pb glass samples by femtosecond laser ablation-multiple ion counter-ICP-mass spectrometry (fsLA-MIC-ICP-MS)
Pb isotopes laser ablation ICP-MS multiple ion counting (MIC) silicate glass geological reference materials
2017/4/11
We report high-resolution in situ Pb isotope analysis (207Pb/206Pb and 208Pb/206Pb ratios) by femtosecond laser
ablation-multiple ion counter-inductively coupled plasma-mass spectrometry (fsLA-MIC-IC...
Comparison of water isotope analysis between cavity ring-down spectroscopy and isotope ratio mass spectrometry
oxygen isotopes hydrogen isotopes water isotope ratio mass spectrometry (IRMS) cavity ring-down spectroscopy (CRDS)
2017/4/10
δD and δ18O of natural waters with δ18O ranging from –24 to –6‰ were measured using a cavity ring-down spectroscopy
(CRDS) in order to confirm that the CRDS method can be an alternative to convention...
Pb isotope analyses of silicate rocks and minerals with Faraday detectors using enhanced-sensitivity laser ablation-multiple collector-inductively coupled plasma mass spectrometry
laser ablation Pb isotopes MC-ICP-MS glass melt inclusion plagioclase clinopyroxene
2017/4/11
We present analytical protocols and the analytical performance of Pb isotope analysis of silicate minerals and rocks at
the Pb = 0.02–15 ppm level using excimer laser ablation (LA) coupled with an en...
Stable chlorine isotope ratio analysis of subnanomolar level methyl chloride by continuous-flow isotope ratio mass spectrometry
stable chlorine isotope ratio continuous flow isotope ratio mass spectrometry methyl chloride
2017/4/11
An analytical system using continuous-flow isotope ratio mass spectrometry (CF-IRMS) was developed to determine
the stable chlorine isotope ratios (δ37Cl) for CH3Cl. By using appropriate devices for ...
Determination of Hf isotope ratios in zircon using multiple collector-inductively coupled plasma mass spectrometry equipped with laser ablation and desolvating nebulizer dual sample introduction system
193 nm excimer Hf isotope laser ablation MC-ICPMS zircon
2017/4/11
We propose an analytical protocol for the accurate in situ determination of 176Hf/177Hf isotope ratios in zircon crystals
by a 193 nm ultraviolet excimer laser ablation (193ExLA) multiple-collector i...
Determination of natural isotopic variation in antimony using inductively coupled plasma mass spectrometry for an uncertainty estimation of the standard atomic weight of antimony
Sb isotope ratios multiple collector ICP-MS element doping technique
2017/4/12
The isotopic variation of industrially produced antimony was estimated using multiple-collector inductively coupled
plasma mass spectrometry. A reproducible 123Sb/121Sb ratio of ±0.004% (2 standard d...
Testing seawater Sr isotopic variability on a glacial-interglacial timescale: An application of latest high-precision thermal ionization mass spectrometry
TIMS Sr isotopes seawater glacial-interglacial cycle
2017/8/9
Stability in seawater 87Sr/86Sr ratios over a glacial-interglacial timescale has gained the consensus, yet inter-site inconsistency exists in the previous data employed for validation of this issue. T...
Noble gas mass spectrometry with a compressor driven recycling system for improved sensitivity
noble gas geochemistry compressor turbo molecular pump
2017/8/9
In order to increase the sensitivity of static-mode noble gas mass spectroscopic analysis, we have developed and tested a gas re-circulation system, which uses a commercially available turbo molecular...
Measurement of chlorine stable isotopic composition by negative thermal ionization mass spectrometry using total evaporation technique
chlorine stable isotopes total evaporation method negative thermal ionization mass spectrometry small samples
2017/8/9
A total evaporation negative thermal ionization mass spectrometry (TE-N-TIMS) technique for the isotopic analysis of chlorine was developed. This technique provides fast and reliable way to determine ...
Simplified technique for the measurements of Re-Os isotope by multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS)
Re-Os, MC-ICP-MS, isotope measurements
2017/8/9
A method for the rapid determination of Re-Os isotopes by multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) was developed. For Os measurements, samples were introduced into the ...
Correction of H3 + Contributions in Hydrogen Isotope Ratio Monitoring Mass Spectrometry
Hydrogen Isotope Ratio Monitoring Mass Correction
2014/4/8
Two fundamentally different approaches, termed “pointwise” and “peakwise,” are currently used to correct
hydrogen isotope ratio monitoring data for the presence
of H3
+
ion contributions. Consider...
Characterization of carbon compounds on a pyroxene surface from a gabbro xenolith in basalt by time-of-flight secondary ion mass spectrometry
Characterization carbon pyroxene surface gabbro xenolith time-of-flight
2012/3/31
Time-of-flight secondary ion mass spectrometry (TOF-SIMS) yields mass spectra of the upper several monolayers of an analytical surface. The applicability of TOF-SIMS to the characterization of C compo...