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December
2008 | Volume 6 | Issue 1
FEATURE
ARTICLE:
Did
You Know ...?
The
SPE-DEX 4790 is THE Automated Extraction System for the New
Oasis® HLB Disk!
 Horizon
Technology and Waters Corporation have introduced the Oasis
HLB Disk, a solid-phase sample preparation product for the
analysis of EPA Method 8270, endocrine disruptors, personal
care products, pharmaceuticals, and other emerging contaminants
in water. The single-use disks are designed to handle larger
and dirtier samples leading to greater throughput for the
environmental laboratory.
Built
on the Atlantic™ Disk platform, the Oasis® HLB Disk
is widely used by environmental laboratories analyzing samples
with gas and liquid chromatography and mass spectrometry in
compliance with approved methods of analysis. Designed
for use with the Horizon Technology SPE-DEX® 4790 Automated
Extractor System.
The
Oasis HLB SPE disk is able to retain the organic semi-volatile
compounds through its unique ratio of hydrophilic N-vinylpyrrolodone
and lipophilic divinylbenezene sorbent. The Oasis HLB sorbent
has a number of key features that enable it to perform the
extraction, including stability at ph extremes and in a wide
range of solvents, extraordinary retention of polar compounds,
and a hydrophobic retention capacity 3x greater than that
of traditional silica-based SPE sorbents.
 The
Horizon Technology SPE-DEX 4790 Automated Extractor System
provides automatic extraction of liquid samples by solid phase
extraction methods, and can handle samples ranging from 20ml
to 4L.
Utilizing the Oasis HLB Disk environmental
scientists can experience a number of benefits including:
- Water-wettability
—
will not dry out even if air drawn through
- High
retention —
effective with a broad range of analytes
- Speed
—
increased throughput
- Large
sample volume —
ideal for environmental samples
- Reduced
solvent consumption —
compared to LLE
- Increased
capacity for dirty samples —
compared to other SPE formats
- Excellent
recoveries —
comparable or better than LLE
>>
Request
a free Oasis HLB Sample Pack
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The
purpose of this application note is to demonstrate the capabilities
of the Oasis® HLB SPE Disk, and the Horizon Technology SPE-DEX®
4790 Automated Extractor System, when used for the analysis
of hormones in drinking water and waste water. The SPE-DEX
4790 is a fully-automated, solid-phase extraction system that
provides fast extraction, and improves the quality and consistency
of results. 
