▏Product Features

The GC3900Pro gas chromatograph is a professional version (performance version) with a 7-inch touch screen and stable voltage regulationFlow control flow path, optional（EPC Electronics

Flow and pressure control system, pressure and flow digital display function, abandoning mechanical display of pressure gauge), digital circuit,IP communication technology, bus technology, network transmission,

Digital quantity 485 transmission, realizing chromatographyInstrument online analysis, capable of remote control, etc., can be installed at mostThree types of detectors

▏Test Principle

Gas chromatograph is a separation and analysis tool for multi-component mixtures, which uses inert gas as the mobile phase and employs chromatographic column separation technology. When there are multiple fractions

When the analyte enters the chromatographic column, due to the different distribution coefficients of each component in the column, the flow velocities of each component in the column are different. After a certain period of

After the column length, the mixed components leave the chromatography column and enter the detector. After detection, they are converted into electrical signals and sent to the data processing workstation to complete the measurement of the tested components

Detection and analysis of substances.

▏Test application

Basic Application

CO2

Photocatalytic detection of CO2 reduction reaction

▏Technical Specifications

indicator	parameter
Temperature of chromatographic column chamber	Temperature control range: room temperature ± 8 ℃ -450 ℃, with increments of 1 ℃
	Temperature control accuracy: ± 0.1 ℃ - ± 0.2 ℃
	Temperature control area: 6-way temperature control
Program heating order	16th order
heating rate	0.1-40 ℃/min, with increments of 0.1 ℃, initial and termination times Range: 0-6000min, with increments of 1min
Pressure protection method	The carrier gas has pressure protection function, and the gas pressure is lower than At 0.1MPa, the instrument automatically cuts off the power supply, effectively protecting the color Safe use of spectral columns
display mode	7-inch touchscreen LCD display
Extreme temperature	Maximum protection value 450 ℃
external event	8通道外部事件
Hydrogen flame ionization detector (FID)	Ignition method: automatic ignition
	Mt≤5×10^-¹²g/s(n-Hexadecane-Isooctane Solution)
	Noise:≤1×10^-14A
	Drift:1×10^-13A/30min
	Linear range: ≥ 10⁶
power supply	220V 50HZ 2000W

▏Product Configuration

Instrument model	GC3900Pro (this instrument has automatic ignition function)
quantity	1 unit
analyze samples	Reactive gas
Sample components	H2TheO2TheN2TheCOTheCO2TheCH4TheC2H6TheC2H4TheC2H2Alcohols and acidsanalyze
configuration	Specification Model		quantity
host GC3900Pro		Room temperature ± 8 ℃ -450 ℃, in increments of 1 ℃
		Temperature control accuracy: ± 0.1 ℃ - ± 0.2 ℃
		Temperature gradient: ± 1%
		16 stage program heating, heating rate 0.1-40 ℃/min, in increments of 0.1 ℃, Initial and termination time range: 0-6000min, with increments of 1min.
		Extreme temperature: maximum protection value 450 ℃
	Injection system	Capillary column injection system
	Injection system	Fill column injection system	1 set
detector	thermal conductivityDetector (TCD)	Sensitivity S ≥ 5000mV · ml/mg	1 piece
		Noise ≤ 20 μ V
		Drift ≤ 30 μ V/15 min
workstation	Dedicated Workstation		1 set
chromatographic column	Capillary chromatography column	PQ column, GDX-502 column, 5A column	3 pieces
gas source	nitrogen cylinder	99.999% high-purity nitrogen with pressure reducing valve (self equipped)	1 bottle
Computer, printer	Computer, printer	Win7/ win10	1 set

▏analysis process

1analyzeH₂O₂、N₂TheCO、CO₂TheCH₄TheC₂H₆、C₂H₄TheC₂H₂

图片1(1)(1).png

After the sample enters column 1 through valve 1, after the gas flows out of column 1, valve 1 switches to blow back alcohols, acids, etc. Column 2 separates C1 and C2. Among them, C1 is H2, O2

N2, CO, CH4 peak combination. After entering column 3, valve 2 switches. CO2 and C2 enter TCD through damping and then enter FID II through valve 3. Analyze C2H6

Content of C2H4 and C2H2. After C2 is completed, valve 2 is reset. Column 3 separates H2, O2, N2, CO, and CH4 into TCD. Detect H2, O2, N2, continue

Entering valve 3 (switching valve 3), it enters the converter, where CO is converted into CH4. Upon entering FID II, CO and CH4 are detected.

Note: Due toTCDLimited sensitivity,H_2TheO₂TheN₂If the concentration is too low, it may not be detectable.

2、 Instrument and equipment

The gas chromatograph should be equipped with a thermal conductivity detector (TCD) and a hydrogen flame ionization detector (FID), gas six way valve, ten way valve, and solenoid valve

▏Spectral analysis results

CO2光催化).png