Update: 30 September, 2023
This article describes a method for analyzing 1,2-ethylene dibromide (EDB) and 1,2-dibromo-3-chloropropane (DBCP) in water using the Agilent 6890 series gas chromatograph and Agilent 6890 micro-electron capture detector. The method follows EPA Method 504, using microextraction to extract the analytes from the sample, and then analyzing the extract by dual-column gas chromatography with dual micro-electron capture detectors (Agilent 6890 micro-ECDs). The micro-ECD provides significantly better stability, sensitivity, and linearity than the classical ECD. The relative standard deviation (% RSD) for the entire method is less than 7% over a concentration range greater than two orders of magnitude, with method detection limits of 0.003 mmmmg/L or lower.
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Publication date: 02 July, 2012
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