Ptc-iis automatic National standard purge and capture Brief introduction of instrument:
The model iis-36 is a full automatic purge trap. Helium / nitrogen is used as purge gas, which is passed into the sample bottle. Under the continuous gas flow, the volatile components in the sample escape with the purge gas and are concentrated by a trap equipped with adsorbent. After a certain purge time, the purge gas is closed, and the six way valve is switched to connect the capture tube to the carrier gas path of GC, and the trap tube is heated rapidly to make the captured sample After the decomposition and absorption, the carrier gas enters into GC for analysis.
It can be used to analyze volatile organic compounds (VOC) in soil and food by GC or GC / MS. It meets the standard hj605-2011 determination of volatile organic compounds in soil and sediment by Purge and trap / gas chromatography-mass spectrometry.
Working conditions of ptc-iis full automatic purge and trap instrument:
Power supply: 220 VAC ± 22 VAC, 50 Hz ± 0.5 Hz
Back blowing carrier gas pressure: ≤ 0.4MPa
The ambient temperature is + 5 ~ 35 ℃
Relative humidity: ≤ 85%
Technical parameters of ptc-iis automatic purge and trap ：
Sample grade: 36 bits, 40ml VOA sample bottle
Sample grade heating temperature: room temperature ~ 100 ℃, control accuracy ± 1 ℃
Heating temperature of pipeline: 50 ～ 220 ℃, control accuracy ± 1 ℃
Cold trap (electronic semiconductor refrigeration) temperature: the minimum cooling temperature can reach - 30 ℃ (optional)
The desorption temperature of trap: 150-400 ℃, heating rate > 3000 ℃ / min; drop from 250 ℃ to 35 ℃ in 90 seconds
Room temperature: 400 ～ 400 ℃
Size of trap: stainless steel, Φ 3mm × 180mm × 0.1mm
Purge flow: 10-150ml / min
Maximum power: < 800VA
Timing range: 1 second to 99 minutes and 59 seconds
Timing error: < 0.1%
Pressure circuit: > 4MPa
Synchronous signal output: two-way 1-2 second switching value
* height * width * 500mm
Weight: About 40kg
Strong general performance: it can be combined with any brand gas chromatograph (GC) and (GC-MS).
Easy to operate, easy to use, software control, high degree of automation: just put the sample bottle into the sample tray, all operation and control are completed by the control software, so the sample repeatability is good; the design of large touch LCD board can track the temperature and operation command in the whole process.
The lowest refrigeration temperature is - 30 ℃ (room temperature is 20 ℃), which can meet most of the requirements of low temperature enrichment. (optional)
The trap is heated by direct resistance, and the heating rate is more than 3000 ℃ / min.
The effect of water vapor on GC and GC / MS is greatly reduced.
PEEK material and silylation inert treatment of stainless steel pipe were used in the sample pipeline to reduce the residual pollution.
All pipelines and six way valves can be heated at controlled temperature to eliminate the cold point of the system and reduce sample loss.
A synchronous interface is provided to start the chromatography and the workstation at the same time.