Gas Exchange Device, Standard (GED-01)

Over the last 40 years ICP-OES spectrometers, also known as ICP-AES, have become an indispensable tool for elemental analysis. And ICP-MS has launched in 1980’s for ion separation, quantification and isotopic information. ICP-MS are particularly useful for trace metal analysis.

ICP (Inductively Coupled argon Plasma) is Key word for these instruments.

Each instrument uses ICP as a light source or an ion source.

※Note; ICP, Inductively Coupled Plasma

ICP Characteristics
* High temperature (6,000℃/ 10,000K) and high electron density (1014~1016 cm-3)
* Wide linear dynamic range (four to six orders of magnitude)
* The ICP has donut-shaped plasma. Therefore the sample aerosol and can be efficiently introduced into the center of the plasma


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Configuration of the Gas Exchange Device

Configuration of the Gas Exchange Device
Gas Exchange Device consist of a duplex glass tubes, inner tube is made of porous membrane. In addition sample gas and sweep gas flow rate is controlled using mass flow controller and pressure regulator.
Sample gas is introduced into the center of the duplex glass tube of the Gas Exchange Device. This duplex glass tube with sweep gas (Argon) carries out replacement of the sample gas components.
Pressure difference between sweep gas(outer tube) and sample gas (inner tube) provides the driving force, when sample gas is introduced into inner tube and diffuses to the outside of a membrane.
Argon gas diffuses to the inside of a membrane and as the diffusion speed of particulates in a gas is very slow, they remain on inside of this membrane.
The transportation of particles will not affected from gas exchange process. Therefore the particulates will be introduced into Inductively Coupled Plasma.


Real-time measurement of the inorganic metal contained in the fine particles in the air.
When introduce a small amount of air into the plasma, the plasma disappears.
Therefore it was not possible to measure inorganic metal that is included in the fine particles in the air.
Note: Major component of air is nitrogen (78 vol %). Furthermore, the ionization energy level of nitrogen is higher than the argon. Therefore, the argon plasma will disappear, because nitrogen cannot be ionized.
This Gas Exchange Device has newly developed porous membrane.
Gas Exchange Device utilizing the newly developed porous membrane.
This device handles air but also many other gases. In addition introduced gases will be exchanged to argon with more than 99.99 % efficiency.
The gas exchange performance of continuous air monitoring was verified for a long period of time at several locations.


Gas exchange performance
Over 99.99 %
Sampling volume
250 mL/min
Pressure of sample gas
Particulate recovery rate
Over 95 %
Argon gas consumption
2.5 L/min
Argon gas supply pressure
0.2 ~ 0.8 MPa
99.995 %
Input voltage
24 VCD
Power consumption
28 W
30(W) 54(D) 19.4(H)
    DC 24V Power Supply, Model: POW-01
    Input coltage
    100~240 VAC
    50/60 Hz
    Output voltage (five port)
    24 VDC
    Power consumption
    144 W
    16.5(W) 36(D) 12.5(H)