SPE Column for Aldehyde Analysis of Air Pollution
Aldehydes are chemical pollutants in atmosphere and regarded as a cause of sick building syndrome. Aldehydes can be detected by GC or HPLC in general after derivertization to 2,4-dinitrophenylhydrazine (DNPH). In particular, "solid phase extraction & HPLC analysis" is convenient method with easy operation of air sampling and solvent extraction. Our DNPH set is a suitable system for aldehyde analysis.
Specification
| Presep®-C DNPH(Short) | Presep®-C DNPH | |
|---|---|---|
| Filler | crushed silica gel | crushed silica gel |
| particle size: 150〜425 μm | particle size: 75〜150 μm | |
| pore size: 7.0 nm | pore size: 7.0 nm | |
| specific surface: 450 cm2/g | specific surface:450 cm2/g | |
| Filler amount | ca. 0.4 g/cartridge | ca. 0.8 g/cartridge |
| Amount of DNPH | ca. 0.9 mg/cartridge | ca. 1.8 mg/cartridge |
| Size | Length: 3.8 cm | Length:5.0 cm |
| maximum width: 1.9 cmφ | maximum width:1.9 cmφ | |
| filling part: 1.0 cmφ×0.8 cm | filling part: 1.0 cmφ×1.6 cm | |
| Amount of loading sample | ca. 75 μg (as formaldehyde) | ca.150 μg (as formaldehyde) |
Presep® -C DNPH Series
- Reduced noise for lower aldehyde (formaldehyde, acetaldehyde, and acetone)
- Individual packaging
Presep® -C DNPH (Short)
- Easy sampling thanks to excellent permeability
- Good for indoor sampling
Procedure
- Sampling by Presep®C DNPH / Presep®-C Ozone Scrubber
- Extraction by acetonitrile (for aldehyde analysis)
- HPLC analysis (Wakopak® WS DNPH-Ⅱ / Wakosil® DNPH-Ⅱ / eluent A&B / standards)
Example of analysis
Analytical Conditions
| Column | Wakosil® DNPH-II 4.6 mmφ, L=150mm | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Eluent | A) Wakosil® DNPH-II Eluent A, B) Wakosil® DNPH-II Eluent B | |||||||||||||||
| Gradient | 0-10min.: Eluent A=100% → Eluent B/10-16min. → Eluent B=100% | |||||||||||||||
| Flow | 1.0 mL/min. at 35°C | |||||||||||||||
| UV | 360 nm | |||||||||||||||
| Injection | 10 μL | |||||||||||||||
| Sample |
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For Aldehyde Analysis Column
Solvent for Exclusive Use
Standard Solution
For research use or further manufacturing use only. Not for use in diagnostic procedures.
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