Molybdenum Isotope Analysis of Standard Reference Materials
نویسندگان
چکیده
منابع مشابه
Platinum stable isotope analysis of geological standard reference materials by double-spike MC-ICPMS.
We report a method for the chemical purification of Pt from geological materials by ion-exchange chromatography for subsequent Pt stable isotope analysis by multiple-collector inductively coupled plasma mass spectrometry (MC-ICPMS) using a 196Pt-198Pt double-spike to correct for instrumental mass bias. Double-spiking of samples was carried out prior to digestion and chemical separation to corre...
متن کاملMagnesium isotope heterogeneity of the isotopic standard SRM980 and new reference materials for magnesium-isotope-ratio measurements
Albert Galy,* Olga Yoffe, Philip E. Janney, Ross W. Williams, Christophe Cloquet, Olivier Alard, Ludwik Halicz, Meenakshi Wadhwa, Ian D. Hutcheon, Erick Ramon and Jean Carignan Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, UK CB2 3EQ. E-mail: [email protected]; Fax: 44 1223 333450; Tel: 44 1223 333404; Geological Survey of Israel, 30 Malkhey Israel Stree...
متن کاملChallenges in Providing Standard Reference Materials
The NIST Analytical Chemistry Division has supplied transmittance verification and wavelength calibration standard reference materials (SRMs) specialized to the needs of chemical and pharmaceutical spectrophotometric analysis since 1970. Growing demand for UV/visible standards stems from the increasingly routine use of spectrophotometers for pharmaceutical quality control and from the escalatio...
متن کاملStandard reference materials: standard quartz cuvettes for high-accuracy spectrophotometry.
Accurate knowledge of lightpath and parallelism of cuvettes used in spectrophotometry are indispensable parameters that must be determined when accurate transmittance measurements of liquid materials are considered. A description is given of the design and techniques developed at NBS for production of quartz cuvettes (SRM 932) having a nominal radiation pathlength of 10 mm ± 0.03 mm. For each c...
متن کاملValue assignment of nutrient concentrations in five standard reference materials and six reference materials.
A number of food-matrix reference materials (RMs) are available from the National Institute of Standards and Technology (NIST) and from Agriculture Canada through NIST. Most of these materials were originally value-assigned for their elemental composition (major, minor, and trace elements), but no additional nutritional information was provided. Two of the materials were certified for selected ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Economic and Environmental Geology
سال: 2016
ISSN: 1225-7281
DOI: 10.9719/eeg.2016.49.2.89