ASTM D7168-05

Standard Test Method for99Tc in Water by Solid Phase Extraction Disk

STANDARD published on 1.5.2005

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The information about the standard:

Designation standards: ASTM D7168-05
Note: WITHDRAWN
Publication date standards: 1.5.2005
SKU: NS-37739
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Annotation of standard text ASTM D7168-05 :

Keywords:

disc, disk, liquid scintillation counting, radioactivity, radiochemistry, solid phase extraction, technetium, water, ICS Number Code 13.060.60 (Examination of water for physical properties)

Additional information

1. Scope

1.1 This test method describes a solid phase extraction (SPE) procedure to separate ⁹⁹Tc from environmental water samples (that is, non-process and effluent waters). Technetium-99 beta activity is measured by liquid scintillation spectrometry.

1.2 This test method is designed to measure ⁹⁹Tc in the range of approximately 0.037 Bq/L (1.0 pCi/L) or greater for a one litre sample.

1.3 The values stated in SI units are to be regarded as standard. Values given in parentheses are provided for information purposes only.

1.4 This method has been used successfully with tap water. It is the user's responsibility to ensure the validity of this test method for samples larger than 1 L and for waters of untested matrices.

1.5 This standard does not purport to address all of the safety concerns, 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. For specific hazard statements, see Section 9.

2. Referenced Documents

D4448-01(2019)	Standard Guide for Sampling Ground-Water Monitoring Wells
D5847-22	Standard Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis
D6001-05	Standard Guide for Direct-Push Groundwater Sampling for Environmental Site Characterization
D7282-24	Standard Practice for Setup, Calibration, and Quality Control of Instruments Used for Radioactivity Measurements
D7902-24	Standard Terminology for Radiochemical Analyses
D8026-16	Standard Practice for Determination of Tc-99 in Water by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) (Withdrawn 2025)
D1129-24	Standard Terminology Relating to Water
D1193-24	Standard Specification for Reagent Water
D2777-21	Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
D3370-25	Standard Practices for Sampling Water from Flowing Process Streams

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