Magnesium Perchlorate as an Alternative Water Trap in AMS Graphite Sample Preparation: A Report On Sample Preparation at Kccams at the University of California, Irvine

2004/01/01 by Guaciara M. Santos, G M Santos, J R Southon +7 · 171 citations
Chemistry · Earth and Planetary Sciences · Physics and Astronomy · #Accelerator mass spectrometry #Analytical Chemistry (journal) #Chemistry #Chromatography #Environmental chemistry #Graphite #Groundwater and Isotope Geochemistry #Inorganic chemistry #Ion #Mass spectrometry #Mineralogy #Nuclear Physics and Applications #Nuclear chemistry #Oxalic acid #Perchlorate #Sample preparation #Scientific Research and Discoveries

paper · pdf · doi:10.1017/s0033822200039485

published in Radiocarbon 46(1), 165-173 (Cambridge University Press)

openalex publication_date 2004/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present a brief discussion of sample preparation procedures at the Keck Carbon Cycle Accelerator Mass Spectrometer (KCCAMS), University of California, Irvine, and a systematic investigation of the use of Mg(ClO 4 ) 2 as an absorptive water trap, replacing the standard dry ice/ethanol cold finger in graphite sample preparation. We compare high-precision AMS measurement results from oxalic acid I and USGS coal samples using Mg(ClO 4 ) 2 under different conditions. The results obtained were also compared with those achieved using the conventional water removal technique. Final results demonstrate that the use of Mg(ClO 4 ) 2 as an alternative water trap seems very convenient and reliable, provided the Mg(ClO 4 ) 2 is replaced frequently.

Cited by

• AMS 14C Sample Preparation at the KCCAMS/UCI Facility: Status Report and Performance of Small Samples
• Radiocarbon Analysis on the New AARAMS 1MV Tandetron
• Paired 14C-10Be exposure ages from Mount Murphy, West Antarctica: Implications for accurate and precise deglacial chronologies
• Los linchamientos en México:crisis de autoridady violencia social
• Ancient DNA reveals a multistep spread of the first herders into sub-Saharan Africa
• The genomic history of the Iberian Peninsula over the past 8000 years
• The formation of human populations in South and Central Asia
• The genetic prehistory of the New World Arctic
• Early Pottery at 20,000 Years Ago in Xianrendong Cave, China
• Genomes from Verteba cave suggest diversity within the Trypillians in Ukraine
• The spread of steppe and Iranian-related ancestry in the islands of the western Mediterranean
• Paired RNA Radiocarbon and Sequencing Analyses Indicate the Importance of Autotrophy in a Shallow Alluvial Aquifer. [europepmc]
• Ancient DNA from the skeletons of Roopkund Lake reveals Mediterranean migrants in India. [europepmc]
• Analysis of 14 C, 13 C and Aspartic Acid Racemization in Teeth and Bones to Facilitate Identification of Unknown Human Remains: Outcomes of Practical Casework. [europepmc]
• Genomes from Verteba cave suggest diversity within the Trypillians in Ukraine. [europepmc]
• Trans-Holocene Bayesian chronology for tree and field crop use from El Gigante rockshelter, Honduras. [europepmc]
• First insights into the age of the giant ice deposits in the Eisriesenwelt cave (Austria). [europepmc]

Related

• AMS 14C Sample Preparation at the KCCAMS/UCI Facility: Status Report and Performance of Small Samples
• Reactive CO 2 capture and mineralization of magnesium hydroxide to produce hydromagnesite with inherent solvent regeneration
• Natural fluid-deposited graphite; mineralogical characteristics and mechanisms of formation
• Magnesium sulfide powder analyzed by XPS
• Akermanitic clinker unlocks the potential of Mg-silicates for carbonation cured construction materials