Standard Test Method for Determination of Diethanolamine, Triethanolamine, N-Methyldiethanolamine and N-Ethyldiethanolamine in Water by Single Reaction Monitoring Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Publication date
2016
reapproved: 2024
Original language
English
Pages
10
Publication date
2016
reapproved: 2024
Original language
English
Pages
10
DOI
https://dx.doi.org/10.1520/D7599-16R24
Product information on this site:
Quick delivery via download or delivery service
Buy securely with a credit card or pay upon receipt of invoice
All transactions are encrypted
Short 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 test method. This test 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. RSD (%) Diethanolamine 25 24 6 96.34 51.00 156.96 31.31 10.96 32.50 9.49 Diethanolamine 50 24 6 101.41 54.00 154.80 29.54 7.97 29.13 7.91 Diethanolamine 200 24 6 101.57 61.00 138.00 20.98 10.50 20.66 10.85 Diethanolamine 425 24 6 102.06 70.00 138.82 17.98 5.90 17.61 5.70 Triethanolamine 25 ...