Calcium isolation from large-volume human urine samples for 41Ca analysis by accelerator mass spectrometry

Appl Radiat Isot. 2013 Aug:78:57-61. doi: 10.1016/j.apradiso.2013.04.012. Epub 2013 Apr 17.

Abstract

Calcium oxalate precipitation is the first step in preparation of biological samples for (41)Ca analysis by accelerator mass spectrometry. A simplified protocol for large-volume human urine samples was characterized, with statistically significant increases in ion current and decreases in interference. This large-volume assay minimizes cost and effort and maximizes time after (41)Ca administration during which human samples, collected over a lifetime, provide (41)Ca:Ca ratios that are significantly above background.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Calcium / isolation & purification*
  • Calcium / urine*
  • Calcium Radioisotopes / chemistry
  • Calcium Radioisotopes / urine*
  • Equipment Design
  • Equipment Failure Analysis
  • Humans
  • Mass Spectrometry / instrumentation*
  • Particle Accelerators / instrumentation*
  • Specimen Handling / instrumentation*
  • Urinalysis / instrumentation*

Substances

  • Calcium Radioisotopes
  • Calcium