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schedule information
January
2010 | Volume 9 | Issue 1
FEATURE
ARTICLE:
APPLICATION NOTE
Turnkey Solution for the Determination of
TPH Compounds in Ground and Surface Water Using Automated
SPE
Total
petroleum hydrocarbons (TPHs) is a term used to describe
a large family of several hundred chemical compounds that
originally come from crude oil. Crude oil is used to make
petroleum products, which can contaminate the environment.
TPHs
can be released into the environment through accidents,
such as chemical releases from industries, or as by-products
from commercial or private use. When TPHs are released directly
into water through spills or leaks, certain TPH fractions
will float in water and form thin surface films. Other heavier
fractions will accumulate in the sediment at the bottom
of the water, which may affect bottom-feeding fish and organisms.
The
EPA regulates certain TPH fractions, products, or wastes
containing TPH, as well as some individual TPH compounds.
It is important to monitor and measure TPH levels as the
can have harmful health effects.
Automated SPE and concentration can provide fast sample
preparation while improving the quality and consistency
of results for TPH compounds C10 to C40 (EPA Method 8015).
Traditional methods for extraction of TPH compounds can
be problematic, such as liquid-liquid extraction (LLE),
which can form emulsions and have corrosion problems, requiring
the use of chemicals such as biocides, emulsion breakers
and corrosion inhibitors.
Automated SPE and the use of SPE disks eliminates many of
the problems that may occur during the extraction step.
Click
here to download the complete Application Note
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PRODUCT
INFORMATION:
Automated
Drying Just Got Easier
Remove
residual water and replace Sodium Sulfate to enhance your
analyte recoveries with the DryDisk® Separation Membrane
designed for use with the automated Horizon Technology DryVap®
Concentrator System.
Upgrade
to the new 3000XL Controller for your EPA Method 1664A compliance
needs.
This Controller has specially modified and optimized software
to properly handle the required 1664A method changes. The
new Controller software code will spray the methanol rinse
solvent into the sample bottle, and will soak the disk to
remove residual water. Once this completes the methanol
will be taken to solvent waste, not into the collection
vessel.
To maximize the recovery values, the sequence of when the
methanol is sprayed into the sample bottle and introduced
onto the disk, has been changed. This new sequence will
provide the optimal recovery values using the required changes
being mandated by the EPA. This operation is permissible
under the EPA modifications.
Contact Horizon Technology
at 1-603-893-3663 or
via email to lean
more.
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