Introduction: In order to adapt to the surface water, groundwater, drinking water, sea water, industrial water and domestic water measurement of volatile halogenated hydrocarbons, the implementation of the "People's Republic of China Environmental Protection Law" and the "People's Republic of China Water Pollution Prevention Law" protect the environment, protect human health, regulate the Determination of volatile halogenated hydrocarbons. My company launched a simple, reproducible, high accuracy networked GC-7820 gas chromatograph according to the above criteria. ECD and FID instrument with high sensitivity (optional FPD), comes with automatic headspace sampler. Detection and analysis solutions are in accordance with the requirements of HJ 620-2011 "Water quality - Determination of volatile halogenated headspace gas chromatography" by gas chromatography, the quantitative detection of volatile halogenated content. Instrument features introduced GC-7820 gas chromatograph to break the original domestic design patterns, using a unique design, the ECD detector sensitivity to the European and American standards. 1. The instrument uses Internet communication technology, you can easily compose LAN, remote data transmission, remote control, remote diagnostics, the program can be automatically upgraded. 2, all computerized keyboard, 5.7-inch large-screen 13-line LCD display in English (switchable), man-machine dialogue, easy to operate. 3, the new integrated digital circuits, high control accuracy, reliable performance, temperature control accuracy up to 0.1 ℃. 4, the unique design solution inlet injection discrimination, not only to solve the two-pillar compensation program baseline drift caused by temperature, and reduce the influence of background noise, you can get a lower limit of detection. 5, bulky oven: 260 * 270 * 235mm, which can accommodate two 80m capillary column. 6, better insulation: oven, vaporizing chamber, when the detector were 300 ℃, the hottest spot outside the box and cover only about 40 ℃, improve test speed, security of human safety. 7, the unique design of the vaporization chamber, smaller die; injection pads, liners, polarization pole, collector, nozzles and other replacement parts can be done with one hand; packed column, capillary injector, TCD, FID detector, etc. subject only need a wrench to replace the complete disassembly, maintenance is very convenient. 8, intelligent opened the door and out of the system infinitely variable air volume, shortening the program up / cooling system is stable equilibrium time. 9, which can install two injection systems: the packed column, capillary split / splitless injection system (with membrane cleaning function); can also install four identical or different detectors, with FID, TCD, ECD, FPD four kind of detector. Optional automatic / manual gas injector, headspace sampler, thermal desorption injector, cracking furnace autosampler, such as methane reformer. 10, the boot has a powerful and comprehensive self-diagnostic function, visual display fault information, power storage protection, keyboard lock function and anti-power interference function. Technical parameters 1, temperature range: room temperature ~ 450 ℃, increment 1 ℃, accuracy ± 0.1 ℃ temperature program: 16-step heating rate of 0.1 ~ 80 ℃ / min communication interfaces: Ethernet, IEEE802.3 2, host size 510 * 500 * 540 (mm) detector main technical indicators index detector sensitivity drift linear flame FID Mt <5 × 10-12g / s (n-hexadecane) <0.2mv / h> 106 thermal conductivity TCD S> 10000mv. ml / mg (n-hexadecane) <20uv> 104 electron capture ECD Mt <1 × 10-13g / ml (r-666) <15uv> 106 FPD FPD Mt <2 × 10-11g / s (thiophene in S) Mt <1 × 10-11g / s (methyl parathion in P) <3% of full scale> 103