This method is an internally developed method that has approval from the California Department of Health Services for the analysis of N-Nitrosodimethylamine (NDMA). Samples are analyzed by either low resolution or high resolution GC/MS.
Reporting limits achieved by high resolution GC/MS are 0.5 ppt (parts per trillion or ng/L). Reporting limits achieved by low resolution GC/MS are 10 ppt.
No chemical preservatives are required for the water samples that will be analyzed for NDMA. Chemical preservatives have the potential to cause interferences which may elevate the reporting limits for NDMA.
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|Hold Times, Preservatives, Preps, Collection, Analytical & Documentation|
|Holding Time:||7 days from collection to extraction|
|Preservatives:||Keep chilled after collection and during shipment to the laboratory.|
|Collection Method:||Grab sampling|
|Analytical Methodology:||Low resolution or high resolution GC/MS|
|Analyte||Formula||CAS Number||Detection Limit|
* The analytes and detection limits listed for each method represent the typical detection limits and analytes reported for that particular method. Keep in mind that analyte lists may vary from laboratory to laboratory. Detection limits may also vary from lab to lab and are dependent upon the sample size, matrix, and any interferences that may be present in the sample.
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