USGS-NWQL: O-3118-83:  Base/Neutral Extractable Compounds in Water by GC-MS

  • Summary
  • Analytes
  • Revision
  • Data and Sites
Official Method Name
Base/Neutral Extractable Compounds, Total Recoverable, Gas Chromatography/Mass Spectrometric
Current Revision
1987
Media
WATER
Instrumentation
Gas Chromatography with Mass Spectrometry Detection
Method Subcategory
Organic
Method Source
  USGS-NWQL
Citation
Methods for the Determination of Organic Substances in Water and Fluvial Sediments, Techniques of Water-Resources Investigations of the United States Geological Survey, Book 5, Chapter A3 Edited by R.L. Wershaw, M.J. Fishman, R.R Grabbe, and L.E. Lowe
Brief Method Summary
Organic base/neutral compounds are extracted from water and water-suspended-sediment mixtures with methylene chloride. The extract is concentrated and analyzed by gas chromatography (GC) using a flame-ionization detector (FID) or a mass spectrometric (MS) detector.
Scope and Application
This method is suitable for the determination of methylene chloride extractable base/neutral compounds in water and water-suspended-sediment mixtures containing at least 2 ug/L of the analyte.
Applicable Concentration Range
2-40
Interferences
Any compound having chemical and physical properties similar to an analyte of interest may interfere.
Quality Control Requirements
Quality-control samples area analyzed at a minimum of one in every ten samples. These QC samples include at least one of each of the following: blanks, quality control samples, third party check solutions, replicates, and spikes. Correlation coefficients for calibration curves must be at least 0.99. QC samples must fall within 1.5 standard deviations of the mean value. If all of the data-acceptance criteria in the SOPs are met, then the analytical data are acceptable.
Sample Handling
Description: 1 L Glass bottle, amber bottle baked at 450oC by laboratory. SOME GCC's should be filtered. Treatment and Preservation: DO NOT RINSE BOTTLE. Do not fill bottle beyond shoulder. Chill sample and maintain at 4oC, ship immediately.
Maximum Holding Time
7 days after arrival at the National Water Quality Laboratory
Relative Cost
$201 to $400
Sample Preparation Methods