EPA-RCA: 8031: Acrylonitrile in Water Using Gas Chromatography
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Official Method Name
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Acrylonitrile by Gas Chromatography |
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Current Revision
| Revision 0, September 1994 |
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Media
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WATER |
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Instrumentation
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Gas Chromatography with Nitrogen - Phosphorus Detection |
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Method Subcategory
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Organic |
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Method Source
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Citation
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Brief Method Summary
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Samples are micro-extracted with methyl tert-butyl ether. The extract is then separated by gas chromatography and measured using a Nitrogen/Phosphorus detector. |
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Scope and Application
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This method determines the concentration of acrylonitrile in water. |
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Applicable Concentration Range
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Not Available. |
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Interferences
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(A) Contamination: Sample contamination may occur by diffusion of volatile organics through the septum seal during shipment and storage. The analysis of field blanks prepared from organic-free reagent water will identify this problem. (B) Method interferences: Contaminants in solvents, glassware, and other sample processing hardware may lead to elevated baselines and/or other interferences in the gas chromatograms. Routine analysis of reagent blanks should be performed as a check for method interferences. (C) Memory Interferences: Carryover may occur whenever high and low concentration samples are analyzed in sequence. For prevention, rinse the sample syringe between samples with solvent. Also, unusually concentrated samples should be followed by the analysis of solvent blank. |
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Quality Control Requirements
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Analysis of solvents to determine possible interferences with the acrylonitrile peak. If the solvent blanks show contamination, a different batch of solvents should be used. Also, refer to Chapter One and Method 8000 for specific QC procedures. |
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Sample Handling
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See SW-846 Chapter Four for information. |
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Maximum Holding Time
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See SW-846 Chapter Four for information. |
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Relative Cost
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$201 to $400 |
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Sample Preparation Methods
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Method 8031 |
