EPA Method 536

Summit Environmental Technologies prides itself in its expansive testing capabilities in a variety of different fields. To find out if Summit conducts this test, contact us at 330-253-8211 today.

PDF IconView Actual EPA Method 536 (PDF File)


EPA Method 536:
DETERMINATION OF TRIAZINE PESTICIDES AND THEIR DEGRADATES IN DRINKING WATER BY LIQUID CHROMATOGRAPHY ELECTROSPRAY IONIZATION TANDEM MASS SPECTROMETRY (LC/ESI-MS/MS)

Summary:
Samples are pH adjusted and dechlorinated with ammonium acetate and protected from microbial degradation using sodium omadine during sample collection. Prior to analysis, isotopically enriched analytes [Atrazine-d5(ethyl-d5), Atrazine-desethyl-d7, Atrazine-desethyl-desisopropyl(13C3), Atrazine-desisopropyl-d5(ethyl-d5), Cyanazine-d5(N-ethyl-d5), Propazine-d14(di-isopropyl-d14), and Simazine-d10(diethyl-d10)] are added to the samples as internal standards. An aliquot of the sample is injected without cleanup or concentration onto a chromatographic column (C18). The analytes are separated using an ammonium acetate-buffered binary mobile phase and subsequently detected by positive electrospray ionization tandem mass spectrometry. The concentration of each identified component is determined using the internal standard technique.

Scope:
This is a liquid chromatography electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS) method for the determination of triazine pesticides and their degradation products in finished drinking waters. This method requires the use of MS/MS in Multiple Reaction Monitoring (MRM) mode to enhance selectivity. Precision and accuracy data have been generated for the detection of the triazine pesticides and their degradates in reagent water and finished drinking water from both groundwater and surface water sources. The single laboratory Lowest Concentration Minimum Reporting Level (LCMRL) has also been determined in reagent water.