Aldehydes and ketones are one of the major pollutants in the urban atmosphere, which are chronically toxic and cause significant harm to humans. Therefore, it is important to detect the content of aldehydes and ketones in the atmosphere, indoors, in the car, and other places.
Dima Technology has made a special topic for the detection of aldehydes and ketones, including DNPH sampling tubes, liquid chromatography columns, standard products and other chromatographic consumables. Welcome to actively purchase.
First, the principle
In general, volatile organic compounds (VOCs) can be detected by GC-MS analysis, but aldehydes and ketones are more "alternative" and more suitable for liquid chromatography. At the same time, since these substances are easily volatilized, the stability of the results may be poor.
Therefore, it is necessary to derivatize these compounds in advance to form stable colored quinone compounds, so that these compounds can be quietly separated and detected by liquid chromatography.
Schematic diagram of aldehyde and ketone derived chemical reaction
Second, aldehyde and ketone sample sampling tube
Based on HJ/T 400-2007, HJ 683-2014, HJ 759-2015, EPA Method TO-11A and other standard methods, Dima Technology has introduced the ProElut DNPH-Silica gas sample collection tube for the detection of aldehydes and ketones in the atmosphere.
Features:
· It has the characteristics of high recovery rate, excellent method reproducibility and good product stability.
· In the production process of this product, a special production process is adopted to ensure that the background value of the product is lower than the industry standard, and the acetaldehyde content is lower than other brand products of the same industry.
Number product description number
1 ProElut DNPH-Silica 400mg 20/pk 65913
2 ProElut DNPH-Silica 400mg DAUL 20/pk 65922
3 ProElut DNPH-Silica 1000mg 20/pk 65930
4 ProElut KI (Ozone Removal Column) 20/pk 65931
Third, the liquid chromatography column
[1] 13 kinds of aldehydes and ketones
1.1 HJ 683-2014 standard experimental method
Column: Diamonsil C18 (2) 250x4.6mm, 5μm (Cat#:99603)
Mobile phase: acetonitrile/water gradient
Flow rate: 1.0mL/min
Column temperature: 30 ° C
Detector: 360nm
Injection volume: 20μL
1.2 Dima test method
Column: Platisil ODS 150x4.6mm, 5μm (Cat#:99501)
Mobile phase: A: 60% acetonitrile water B: water: acetonitrile: tetrahydrofuran = 45:35:20 gradient
Flow rate: 1.0mL/min
Column temperature: 30 ° C
Detector: 360nm
Injection volume: 20μL
[2] 15 kinds of aldehydes and ketones
Column: Diamonsil C18 (2) 250x4.6mm, 5μm (Cat#:99603)
Mobile phase: methanol/water gradient
Flow rate: 1.0mL/min
Column temperature: 35 ° C
Detector: 360nm
Injection volume: 20μL
IV. Aldehyde-ketone-DNPH standard
[1] single standard
No. Product Description CAS Item Number
1 Formaldehyde-DNPH100μg/mL dissolved in acetonitrile, 1mL 1081-15-8 47124
2 acetaldehyde-DNPH100μg/mL dissolved in acetonitrile, 1mL 1019-57-4 47125
3 acrolein-DNPH100μg/mL dissolved in acetonitrile, 1mL 888-54-0 47126
4 acetone-DNPH100μg/mL dissolved in acetonitrile, 1mL 1567-89-1 47127
5 butanone-DNPH100μg/mL dissolved in acetonitrile, 1mL 958-60-1 47128
6 isovaleraldehyde-DNPH100μg/mL dissolved in acetonitrile, 1mL 2556-01-1 47129
7 2,5-Dimethylbenzaldehyde-DNPH 100μg/mL dissolved in acetonitrile, 1mL 152477-96-8 47130
[2] mixed standard
2.1 15 kinds of aldehyde ketone-DNPH mixed standard
Applicable to EPA 8315 method, 100μg/mL in acetonitrile, 1mL / amp, Cat. No.: 47028
Serial number Chinese name English name CAS
1 acetaldehyde-DNPH Acetaldehyde-DNPH 1019-57-4
2 acetone-DNPH Acetone-DNPH 1567-89-1
3 Acrolein-DNPH Acrolein-DNPH 888-54-0
4 benzaldehyde-DNPH Benzaldehyde-DNPH 1157-84-2
5 n-butyraldehyde-DNPH Butanal-DNPH 1527-98-6
6 crotonaldehyde-DNPH (crotonaldehyde-DNPH) Crotonaldehyde-DNPH 1527-96-4
7 2,5-Dimethylbenzaldehyde-DNPH 2,5-Dimethylbenzaldehyde-DNPH 152477-96-8
8 Formaldehyde-DNPH Formaldehyde-DNPH 1081-15-8
9 hexanal-DNPH Hexanal-DNPH 1527-97-5
10 Isovaleraldehyde-DNPH Isovaleraldehyde-DNPH 2256-01-1
11 valeraldehyde-DNPH Valeraldehyde-DNPH 2057-84-3
12 Propionaldehyde-DNPH Propionaldehyde-DNPH 725-00-8
13 m-methylbenzaldehyde-DNPH m-Tolualdehyde-DNPH 2880-05-9
14 o-Methylbenzaldehyde-DNPH o-Tolualdehyde-DNPH 1773-44-0
15 p-Methylbenzaldehyde-DNPH p-Tolualdehyde-DNPH 2571-00-8
2.2 13 kinds of aldehyde ketone-DNPH mixed standard
For HJ 683-2014 Determination of Airborne Aldehydes and Ketones - High Performance Liquid Chromatography, HJ 759-2015 Determination of Volatile Organic Compounds in Air - Tank Sampling Gas Chromatography-Mass Spectrometry, 100 μg/mL Dissolved in Acetonitrile, 1 mL/Amp ,Cat. No.: 47029
Serial number Chinese name English name CAS
1 Formaldehyde-DNPH Formaldehyde-DNPH 1081-15-8
2 acetaldehyde-DNPH Acetaldehyde-DNPH 1019-57-4
3 acetone-DNPH Acetone-DNPH 1567-89-1
4 Propionaldehyde-DNPH Propionaldehyde-DNPH 725-00-8
5 crotonaldehyde-DNPH (crotonaldehyde-DNPH) Crotonaldehyde-DNPH 1527-96-4
6 Butanone-DNPH Butanone-DNPH 958-60-1
7 n-butyraldehyde-DNPH Butanal-DNPH 1527-98-6
8 methacrolein-DNPH Methacrolein-DNPH 5077-73-6
9 benzaldehyde-DNPH Benzaldehyde-DNPH 1157-84-2
10 valeraldehyde-DNPH Valeraldehyde-DNPH 2057-84-3
11 m-methylbenzaldehyde-DNPH m-Tolualdehyde-DNPH 2880-05-9
12 hexanal-DNPH Hexanal-DNPH 1527-97-5
13 Acrolein-DNPH Acrolein-DNPH 888-54-0
2.3 16 kinds of aldehyde ketone-DNPH mixed standard
Applicable to HJ/T 400-2007 sampling method for volatile organic compounds and aldehydes and ketones in vehicles, 100μg/mL dissolved in acetonitrile, 1mL / ampere, Cat. No.: 47030
Serial number Chinese name English name CAS
1 Formaldehyde-DNPH Formaldehyde-DNPH 1081-15-8
2 acetaldehyde-DNPH Acetaldehyde-DNPH 1019-57-4
3 acetone-DNPH Acetone-DNPH 1567-89-1
4 Propionaldehyde-DNPH Propionaldehyde-DNPH 725-00-8
5 crotonaldehyde-DNPH (crotonaldehyde-DNPH) Crotonaldehyde-DNPH 1527-96-4
6 Butanone-DNPH Butanone-DNPH 958-60-1
7 n-butyraldehyde-DNPH Butanal-DNPH 1527-98-6
8 methacrolein-DNPH Methacrolein-DNPH 5077-73-6
9 benzaldehyde-DNPH Benzaldehyde-DNPH 1157-84-2
10 valeraldehyde-DNPH Valeraldehyde-DNPH 2057-84-3
11 o-Methylbenzaldehyde-DNPH o-Tolualdehyde-DNPH 1773-44-0
12 m-methylbenzaldehyde-DNPH m-Tolualdehyde-DNPH 2880-05-9
13-p-methylbenzaldehyde-DNPH p-Tolualdehyde-DNPH 2571-00-8
14 cyclohexanone-DNPH Cyclohexanone-DNPH 1589-62-4
15 hexanal-DNPH Hexanal-DNPH 1527-97-5
16 Acrolein-DNPH Acrolein-DNPH 888-54-0
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