UV Gas Analyzer

DOAS-M1

Photonics Technology Obninsk, Ltd.
presents the enhanced
Ultra-Violet Open Path Gas Analyzer DOAS‑M1,
compact, with additional operator facilities

For the atmospheric air gas pollutants monitoring

 

Advantages and characteristics :

¾             Detects and measures concentrations of 38 gases with high accuracy and sensitivity
at the level of units of ppbv

¾             Single measurement time is from 30 sec to 3 min, SIMULTANEOUSLY measures up to 33 gases

¾             Optical method of measurements (spectrum analysis)
does not require air sampling and chemical reagents

¾             Small passive reflector (which does not require power supply and maintenance) is placed 20-200 away from the telescope and the light source; the data are processed in the analyzer and shown on a display of the computer as tables and charts.

¾             DOAS-M1 measures averaged along the path concentrations of gases, that are transported from pollution sources to residential areas

¾             DOAS-M1 is easy to use in mobile systems
(weight of the telescope is 22 kg, analyzer 8kg, reflector- 0.3 kg)

¾             DOAS-M1 can be used in ecological monitoring systems for continuous automated real-time measurements; continuous operating time depends on service time of the interchangeable xenon lamp (up to 2 months)

 

38 gases detected by DOAS-M1 and their detection thresholds (DT)

Formula

Name

DT, ppb

 

Formula

Name

DT, ppb

NH3

ammonia

 

 

C8H10O

2,3-dimethylphenol (2,3-xylenol)

1.2

NO

nitric oxide

 

 

2,4- dimethylphenol (2,4- xylenol)

1.4

NO2

nitrogen dioxide

2.8

 

2,5- dimethylphenol (2,5- xylenol)

1.6

NOHO

nitrous oxide

1.1

 

2,6- dimethylphenol (2,6- xylenol)

2.8

3,4- dimethylphenol (3,4- xylenol)

1.2

SO2

sulfur dioxide

0.8

 

3,5- dimethylphenol (3,5- xylenol)

0.4

O3

ozone

1.4

 

 

 

CH2O

formaldehyde

3.4

 

C9H13O

2,4,6-trimethylphenol

7.4

C6H6

benzene

0.8

 

C9H12

1,2,4-trimethylbenzene

3.2

C7H8

toluene

3.6

 

1,3,5- trimethylbenzene (mesitylene)

6.0

C6H6O

phenol

0.2

 

C8H8O

o- toluylaldehyde

0.8

C7H6O

benzaldehyde

0.5

 

m- toluylaldehyde

1.0

C8H10

ethylbenzene

3.8

 

p- toluylaldehyde

0.3

styrene (vinylbenzene)

 

 

CS2

carbon bisulfide

9.0

C8H10

o-xylene

8.0

 

OClO

chlorine dioxide

0.03

m-xylene

4.0

 

IO

iodine dioxide

0.2

p-xylene

1.0

 

BrO

bromine dioxide

 

C7H8O

o-cresol

2.0

 

CH3COCHO

methylglyoxal

0.2

m-cresol

0.8

 

CH2C(CH3)CHO

metacrolein

16

p-cresol

0.2

 

CH2CHCHCH2

1,3- butadiene(divinyl)

 

Photonics Technology Obninsk, Ltd
www.eridan.mega.ru

P.B. 5115, Obninsk, Kaluga reg., 249035, Russia

tel: 7(084)394 4380, tel/fax: 7(084)394 4304,
e-mail: eridan@obninsk.com