1、 Overview of GC-2001 Gas Chromatography for Total Hydrocarbons and Non Methane Total Hydrocarbons Detection in Air

Non methane total hydrocarbons (NMHC) typically refer to all volatile hydrocarbons other than methane, also known as non methane total hydrocarbons. When the concentration of NMHC in the atmosphere exceeds a certain level, it is harmful to human health and can also produce chemical smoke, causing harm to the environment and humans. The factory boundary concentration standard for non methane total hydrocarbons in China's "Comprehensive Emission Standards for Air Pollutants" (GB16927-1996) is 5mg/m3

GC-2001The gas chromatograph for the detection of total hydrocarbons and non methane total hydrocarbons in the air meets the requirements of analytical methods such as GB/T15263-94 "Determination of total hydrocarbons in ambient air by gas chromatography", HJ/T38-1999 "Determination of non methane total hydrocarbons in fixed source exhaust gas by gas chromatography", and "Air and exhaust gas monitoring methods (fourth edition)".

IIGC-2001 specialized gas chromatograph for detecting total hydrocarbons and non methane total hydrocarbons in the airInstrument configuration:

Gas chromatograph host GC-2001-FID 1 unit

1 set of workstation

One set of injection valve

Fill the column with 2 injection ports

2 dedicated chromatography columns

1 standard gas (methane 1000umol/mol)

1 set of catalytic hydrocarbon removal device

100mLGlass syringe

10mlGlass syringe

Computer printer comes separately

Instrument Introduction:

GC-2001Type gas chromatograph,It is a multifunctional laboratory analytical instrument controlled by a microcomputer,It has five detectors: thermal conductivity cell, hydrogen flame ionization, electron capture, flame photometry, and nitrogen phosphorus. It can be equipped with packed columns or capillary columns. The instrument can be operated at a constant temperature or with a five step programmed temperature rise. The instrument has high integration and achieves a high degree of automation. Detector parameters and temperature parameters can be set through the keyboard. Real time display of pressure on packed columns, capillaries, and column heads.

GC-2001The gas chromatograph has a reasonable structure, stable and reliable performance, simple operation, and easy maintenance.Widely used in grain, food, vegetables, dairy products, pesticide residue detection, etc.It can be applied to production and research departments such as petroleum, chemical, pesticide, medicine and health, commodity inspection, environmental protection, and higher education institutions.

Technical indicators:

Five stage program heating, heating rate0.1~30℃/min, in order to0.1℃ is an increment, with a range from initial to final time0~255 min, in order to1minFor increments.

Internal dimensions of column temperature box(mm):long270X width220X high260

Instrument dimensions(mm):long655X width460X high450

weight47kg

Temperature control accuracy: ±0.1℃－±0.2℃，

Temperature control range: room temperature+6℃－399℃

The machine has functions such as self diagnosis, power failure protection, stopwatch, file storage and retrieval

one Detector section

According to different sample analysis requirements, there are five detectors to choose from

1：FIDFid

2：TCDThermal conductivity pool detector

3：ECDECd

4：NPDNitrogen and phosphorus detector

5：FPDflame photometric detector

2： Injector section

In order to obtain detection data and adapt to different analysis requirements, it has two injection ports, a packed column and a capillary column. Equipped with column head injection, glass lined injection, and diversion/No diversion sampler. Analysis of capillaries and packed columns with different diameters. The injection port has an injection guide, and the glass lining of various caliber capillaries is equipped with characteristic springs, which can automatically find balance and positioning.

3： Column box section

The large column box of the instrument is compact, the air duct layout is reasonable, moderately uniform, and the temperature is raised/The cooling rate is fast, thus improving the reproducibility analysis ability of the analysis results. Automatic rear door opening, from350℃ drops to60℃ is required8minute.

4： Keyboard/Display Section

Full Chinese keyboard input method, using a large screenliquid crystalDisplay, clear, intuitive, and convenient.

5： Gas path section

By using back pressure control, the carrier gas flow rate of the capillary column can be accurately determined. Use a quality flow control valve to determine the total flow rate, use a back pressure valve to control the input pressure of the capillary column, and also use a diaphragm cleaning valve to adjust the diaphragm cleaning flow rate for purging the injection pad. The filling column air path adopts a single air path design. Therefore, both a packed column and a capillary column can be installed simultaneously without affecting each other.

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