ASTM C1614-05
Historical Standard: ASTM C1614-05 Standard Practice for the Determination of 237 Np, 232 Th, 235 U and 238 U in Urine by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) and Gamma Ray Spectrometry.
SUPERSEDED (see Active link, below)
ASTM C1614
1. Scope
1.1 This practice covers the separation and preconcentration of neptunium-237 ( 237 Np), thorium-232 ( 232 Th), uranium-235 ( 235 U) and uranium-238 ( 238 U) from urine followed by quantitation using ICP-MS.
1.2 This practice can be used to support routine bioassay programs. The minimum detectable concentrations (MDC) for this method, taking the preconcentration factor into account, are approximately 1E-2Bq for 237 Np (0.38ng), 2E-6Bq for 232 Th (0.50ng), 4E-5Bq for 235 U (0.50ng) and 6E-6Bq for 238 U (0.48ng).
1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
C859 Terminology Relating to Nuclear Materials
C1379 Test Method for Analysis of Urine for Uranium-235 and Uranium-238 Isotopes by Inductively Coupled Plasma-Mass Spectrometry
C1475 Guide for Determination of Neptunium-237 in Soil
D1193 Specification for Reagent Water
D4962 Practice for NaI(Tl) Gamma-Ray Spectrometry of Water
Keywords
Bioassay; urine; neptunium; thorium; uranium; mass; inductively coupled plasma-mass spectrometry; gamma-ray spectrometry; isotope ratio; isotope dilution; extraction chromatography; Bioassay; Extraction chromatography; Gamma-ray spectrometry; ICP-MS (inductively-coupled plasma-mass spectrometry); Neptunium-237; Thorium-232 content; Uranium-235; Urine ;
ICS Code
ICS Number Code 71.040.50 (Physicochemical methods of analysis)
DOI: 10.1520/C1614-05
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