EmailGCOM-4000-VOCs is composed by headspace sample introduction module and high temperature chromatographic analysis module (GC-FID). It is able to monitor benzene series (benzene, toluene, xylene, ethylbenzene, styrene, etc.) and other volatile organic pollutants in industrial wastewater and surface water section. The water sample is pumped into headspace pool of analyzer through pretreatment pipeline; under condition of constant temperature heating, the volatile organic compounds in water sample are transferred to gas phase space above the liquid surface, then the volatile sample gas is transferred to high temperature chromatographic analysis module for detection through pressurizing and decompressing of carrier gas. Through the process of changing liquid phase to gas phase via headspace sampling device, volatilized clean gas can be measured directly. The influence of impurities (such as suspended matter) in water on the analysis flow path can be overcome.
Features
Through the process of changing liquid phase to gas phase via headspace sampling device, volatilized clean gas can be measured directly and the influence of impurities (such as suspended matter) in water on the analysis flow path can be overcome
After each sample introduction, the analyzer automatically purges towards the chromatographic column to speed up analysis and screening of component
Intelligent FID detector automatically ignites when flameout, effectively controls the safety of hydrogen flame gas path
Internal pipeline of the chromatograph have been processed with silanization, which greatly reduces the adsorption residue of gas sample in pipeline wall
Applications
Applied to VOCs monitoring in wastewater discharge from industries of coatings, resins, pharmaceuticals, as well as concentrated drinking water and surface water source.
Specifications
Measuring method: GC-FID gas chromatography
Measurement parameter: benzene series
Range: 0-20mg/L
Detection limit: 0.05mg/L
Lower limit of detection: 0.1mg/L
Resolution: 0.01mg/L
Indication error: ≤15%
Qualitative repeatability: ≤1%
Quantitative repeatability: ≤10%
Measurement period: ≤1h
Communication protocol: Modbus-RTU/GB2017
Dimension: 800mmx800mmx1865mm
IP grade: cabinet IP42
Power: 220VAC, 1500W
Working temperature: 5℃~45℃
Working humidity:＜95%, non condensing
Compressed air: (0.4~0.8)MPa, clean, oil-free
Carrier gas: nitrogen, purity≥99.999%
