Vacuum Distillation is a new US EPA developed
sample preparation/GC/MS technique. This new technique
was developed as an alternate & improved method for the
detection of Volatile Organic Chemicals (VOCs) from most
environmental samples. The US EPA promulgated Methods
associated with this technique are:
The Vacuum
Distillation Technique was developed by the US EPA
specifically to overcome matrix effects from a wide
range of sample matrices.
- This new Vacuum Distillation
technique addresses most of the deficiencies that have long
plagued the existing VOC techniques.
- Unlike Purge & Trap and Head
Space techniques, Vacuum Distillation has a theoretical basis.
The analyte recoveries using Vacuum Distillation are based on
the boiling points and partition coefficients of analytes
being extracted.
- Vacuum Distillation is
much more accurate than traditional Purge & Trap or Head Space
methods of extraction, and has the advantage of being much simpler
and more reliable.
- Each and every sample test has
built in quality control features that provide a level of
confidence not available by Purge and Trap or Head Space
techniques.
- All VOCs, some polar and some
SVOCs with boiling points below 245C and partition
coefficients below 15,000 can be extracted efficiently from
sample matrices.
VOC ANALYSIS
- SOME APPLICATIONS
- 1-4, Dioxane & TCE analysis from soil
or water samples
- Waste water, Foaming samples, samples w/organic
content
- Oil and Waste oil
- Contaminated soils, sludge and sediment
-
Processed Milk and dry food goods
- Polymers and other plastics
- Fish Tissue and other biota
- Pine Needles & Leaves
- MTBE and other oxygenates
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