We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Multi-element trace determinations in pure alkaline earth fluoride powders by high-resolution ICP-MS using wet-chemical sample preparation and laser ablation.
- Authors
Tibi, Markus; Heumann, Klaus G.
- Abstract
Four alternative analytical procedures for the determination of ten important trace impurities (Mg, Cr, Fe, Cu, Zn, Sr, Zr, Cd, Ba, and Pb) in pure alkaline earth fluoride powders were applied using high-resolution inductively coupled plasma mass spectrometry (ICP-MS). Two procedures are based on a wet-chemical microwave digestion with boric acid and quantification by the standard addition technique and isotope dilution mass spectrometry (IDMS), respectively. In addition, analyses are also performed by laser ablation as a direct solid sampling technique applying matrix-matched external calibration as well as isotope dilution of the powdered sample. For most elements good agreement between the different methods is found. Detection limits for laser ablation vary between 0.05 ng g-1 for Zr and 20 ng g-1 for Mg. They are about one to two orders of magnitude lower than those of the wet-chemical procedures, which is mainly due to the high dilution factor during the sample preparation step. Advantages and restrictions of the different analytical procedures are discussed with respect to their routine applicability. Due to its relatively high accuracy, low detection limits, and time-efficiency LA-ICP-IDMS is the preferred choice if no standard reference materials are available.
- Subjects
TRACE element analysis; CHEMICAL elements; METAL inclusions; ALKALINE earth metals; FLUORIDES; LASER ablation
- Publication
Analytical & Bioanalytical Chemistry, 2003, Vol 377, Issue 1, p126
- ISSN
1618-2642
- Publication type
Article
- DOI
10.1007/s00216-003-2076-x