ASTM-D7599 2009

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D7599-09e2 Standard Test Method for Determination of Diethanolamine, Triethanolamine, N-Methyldiethanolamine and N-Ethyldiethanolamine in Water by Single Reaction Monitoring Liquid Chromatography/Tandem Mass Sp

Published By	Publication Date	Number of Pages
ASTM	2009	9

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Categories: 13.060.50 - Examination of water for chemical substances, ASTM

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Description

1.1 This procedure covers the determination of diethanolamine, triethanolamine, N -methyldiethanolamine and N -ethyldiethanolamine (referred to collectively as ethanolamines in this test method) in surface water by direct injection using liquid chromatography (LC) and detected with tandem mass spectrometry (MS/MS). These analytes are qualitatively and quantitatively determined by this method. This method adheres to single reaction monitoring (SRM) mass spectrometry.

1.2 This test method has been developed by US 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 the ethanolamines are listed in Table 1 .

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 ratios at the DVLs and at higher concentrations for N -methyldiethanolamine.

1.4.2 The reporting limit is the concentration of the Level 1 calibration standard as shown in Table 2 for diethanolamine, triethanolamine, and N -ethyldiethanolamine and Level 2 for N -methyldiethanolamine. The reporting limit for N -methyldiethanolamine is set at 50 ?g/L due to poor sensitivity at a 5 ?g/L concentration which did not meet the DVL criteria. The DVL for N -methyldiethanolamine is at 10 ?g/L, which forces a raised reporting limit (chromatograms are shown in Fig. 1 ). However, the multi-laboratory validation required a spike of all target analytes at 25 ?g/L. The mean recovery for N -methyldiethanolamine at this level was 88?% as shown in Table 3 . If your instruments sensitivity can meet the requirements in this test method, N -methyldiethanolamine may have a 25 ?g/L reporting limit.

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.

Additional information

Standard Title	D7599-09e2 Standard Test Method for Determination of Diethanolamine, Triethanolamine, N-Methyldiethanolamine and N-Ethyldiethanolamine in Water by Single Reaction Monitoring Liquid Chromatography/Tandem Mass Sp
Published Code	ASTM
Publication Date	2009
Pages Count	9
ICS Codes	13.060.50 - Examination of water for chemical substances

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ASTM-D7599 2009

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