ASTM-D7598 Standard Test Method for Determination of Thiodiglycol in Water by Single Reaction Monitoring Liquid Chromatography/Tandem Mass Spectrometry

ASTM-D7598 - 2016 R17 EDITION - CURRENT
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Standard Test Method for Determination of Thiodiglycol in Water by Single Reaction Monitoring Liquid Chromatography/Tandem Mass Spectrometry
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Scope

1.1 This procedure covers the determination of thiodiglycol (TDG) in surface water by direct injection using liquid chromatography (LC) and detected with tandem mass spectrometry (MS/MS). TDG is qualitatively and quantitatively determined by this test method. This test method adheres to single reaction monitoring (SRM) mass spectrometry.

1.2 This test method has been developed by U.S. EPA Region 5 Chicago Regional Laboratory (CRL).

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 The detection verification level (DVL) and reporting range for TDG are listed in Table 1.

TABLE 1 Detection Verification Level and Reporting Range

Analyte

DVL (μg/L)

Reporting Range (μg/L)

Thiodiglycol

20

100–10 000

1.4.1 The DVL is required to be at a concentration at least 3 times below the reporting limit (RL) and have a signal/noise ratio greater than 3:1. Fig. 1 displays the signal/noise ratio at the DVL.

FIG. 1 Example SRM Chromatograms Signal/Noise at Detection Verification Level

Example SRM Chromatograms Signal/Noise at Detection
 Verification LevelExample SRM Chromatograms Signal/Noise at Detection
 Verification Level

1.4.2 The RL is the concentration of the Level 1 calibration standard as shown in Table 2. The reporting limit for this test method is 100 μg/L.

TABLE 2 Concentrations of Calibration Standards (PPB)

Analyte/Surrogate

LV 1

LV 2

LV 3

LV 4

LV 5

LV 6

LV 7

Thiodiglycol

100

250

500

1 000

2 500

5 000

10 000

3,3’-Thiodipropanol

100

250

500

1 000

2 500

5 000

10 000

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.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

liquid chromatography; mass spectrometry; thiodiglycol; water;; ICS Number Code 13.060.50 (Examination of water for chemical substances)

To find similar documents by ASTM Volume:

11.02 (Water (II))

To find similar documents by classification:

13.060.50 (Examination of water for chemical substances)

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Document Number

ASTM-D7598-16(2017)

Revision Level

2016 R17 EDITION

Status

Current

Modification Type

Reapproval

Publication Date

July 15, 2017

Document Type

Test Method

Page Count

9 pages

Committee Number

D19.06