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ASTM International, 12/01/2009
Publisher: ASTM
File Format: PDF
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Published:01/12/2009
Pages:8
File Size:1 file , 260 KB
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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 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 TDG are listed in Table 1.
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.
1.4.2 The RL is the concentration of the level 1 calibration standard as shown in Table 2. The reporting limit for this method is 100 μg/L.
Analyte/Surrogate
LV 1
LV 2
LV 3
LV 4
LV 5
LV 6
LV 7
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