GC-7820AThe gas chromatograph is a new generation product developed by Shandong Huifen Instrument Co., Ltd. It features a color LCD display in both Chinese and English, touch screen buttons, fully digital parameter operation, and automatic control of gas path operation parameters（EPC）The technology has the characteristics of high integration, simple operation, high automation, good reliability, and adaptability to long-term operation. Its cost-effectiveness ranks among the top in similar products. It can be widely used in various fields such as petroleum, chemical, environmental, food safety, disease control, and educational research, and can be used for constant, trace, and trace analysis of organic matter, inorganic matter, and gases.

GC-7820A High Intelligence Gas Chromatography Instrument

Product parameters

1.working conditions

Power Supply:220V,50Hz Environmental temperature:15℃～35 ℃

ambient humidity:5%～95%

2.column oven

Furnace size:28×30×17cm

Operating temperature range: above room temperature to450℃

Temperature setting accuracy:0.01℃ Program heating speed:120℃/min

Maximum method runtime:999.99min

Program heating order:8steps

3Injection port

Multiple injection ports available: packed column injection port, split flow non split flow injection port,

All injection ports include electronic flow control modules

shunt/Non split capillary column injection port

Equipped with high-precision electronic pressure/Flow control;

Usage temperature400℃；

Column head pressure setting range:1-100psi；

Column head pressure control setting accuracy:0.01psi；

Total flow setting range:0 - 1000ml/min(helium)；0 - 200ml/min(Nitrogen);

Flow setting accuracy:0.1ml/min；

Split ratio:1:1000

4Fully imported valve configuration system

Can be carried1An automatic control valve capable of automatic sequential operation(Four way valve, six way valve, ten way valve, and liquid injection valve are optional)

Auxiliary electronic flow control module (pressure adjustable)/Flow control mode)

High speed switching solenoid valve has a long service life(100Ten thousand times,10mS)

5Detector

All detectors include electronic flow control modules,Later expansion can install any three detectors simultaneously

Hydrogen flame ionization detector（FID）

1. The signal amplification board has undergone special processing and remains stable in harsh environments

2. Automatic ignition, hydrogen leakage protection function

   3）High precision electronic flow rate/Pressure control, suitable for packed columns and capillary columns

   Usage temperature450℃

   Minimum detection limit<>pike carbon/Seconds (n-hexadecane)

   Dynamic linear range:10⁷(±10%)、

   Data collection frequency:100hz

   Thermal conductivity detector（TCD）

1. Suitable for filling columns and capillary columns

2. Fast stabilization time, small dead volume, short equilibrium time

3. High precision electronic flow rate/Pressure control, adaptation to fish packed columns and capillary columns

   Usage temperature400℃, data collection frequency:100hz、

   Dynamic linear range:10⁵(±10%)、

   Minimum detection limit:<>propane/Milliliter (helium)

   Electron capture detector（ECD）

1. Exquisite design, stable and efficient

2. Safer and more sensitive, only8mCiUltra low radiation level but high response value

3. Anode blowing effectively avoids cross contamination between samples and has high repeatability

4. Line source capacity:370MBq
   Temperature range:~400℃
   Minimum detection limit:8fg/s（γ-BHC）
   Dynamic range:10⁵

   Flame photometric detector（FPD）

1. Unique local cooling technology to increase the maximum operating temperature

2. There is no cold spot for organophosphate pesticides

3. The internal pipeline is fully inert to ensure zero adsorption of the sample

4. Temperature range:~350℃
   Minimum detection limit:P：0.11pg/s（110fgP/s）(tributyl phosphate)
   S： 5pg/s(Dodecanethiol)
   Dynamic range:P： 10⁴ 　 S： 10³

   Instrument features:

   1The display window adopts imported vacuum fluorescent screen, which is still clear under sunlight. Instrument operation interface with both Chinese and English operating systems

   2Adopting advanced technology10/100MAdaptive Ethernet communication interface, built-inIPThe protocol stack can easily form a LAN and the Internet to realize long-distance data transmission.

   3Internal design3An independent connection thread that connects to local processing, unit supervisors, and higher-level supervisory departments, facilitating real-time monitoring of instrument operation and data analysis by unit supervisors and higher-level supervisory departments.

5. Equipped withNETChrom ®Workstation, capable of supporting multiple chromatography instruments（253）Simultaneously work, achieve data processing and counter control, and reach the leading level in the industry.

6. NETChrom ®Built in workstationModbus/TCPServer, which can easily access the analysis resultsDCS(Distributed Control System).

7. Adopting modular design, easy to upgrade. Multiple high-performance detectors are available for selection, such asFID、TCD、ECD、FPDandNPDDetector, suitable for complex sample analysis.

8. Completely abandoning traditional pointer pressure gauges, loadingEPCTechnology is used for gas path control. It has achieved self-protection against air circuit faults, automatic ignition, key shutdown, and automatic opening of the air circuit, achieving one key start.

9. Design a timed startup program that can easily complete online analysis of gas and liquid samples (equipped with injection components).

10. The system is designed with an automatic sampler port and comes with multiple built-in driver programs that can load the sampler at any time.

    application area

    1 Application of Chromatography in Petrochemical Analysis

    Chromatography is very important in petroleum and petrochemical analysis. From the exploration and development of oil fields to the control of oil quality, chromatography, a low-cost, fast, high separation and sensitivity analysis method, is indispensable. American Society for Materials and Analysis(ASTM)We have developed and continue to develop various chromatographic standard methods for petrochemical analysis.

    The application of chromatography in petrochemical analysis mainly involves the following aspects:

    1Geochemical analysis in oil and gas field exploration;2Crude oil analysis;3Refinery gas analysis;4Simulated distillation;5Oil analysis;6Analysis of elemental hydrocarbons;7Analysis of sulfur-containing and nitrogen-containing compounds;8Analysis of gasoline additives;9Fatty hydrocarbon analysis;10Aromatic hydrocarbon analysis;11Chromatographic analysis of the manufacturing process.

    II The Application of Chromatography in Environmental Analysis

    With the development of social economy and science and technology, human civilization is advancing rapidly. On the other hand, it has also caused increasingly serious damage to the ecological environment, and environmental pollution has become one of the challenges facing humanity. Countries around the world are working hard to control and manage various types of environmental pollution, such as the US Environmental Protection Agency（EPA）The Chinese Environmental Protection Administration has issued a large number of standard analysis methods. The application of chromatography in environmental analysis mainly includes the following aspects:

    1． Air pollution analysis (including non methane total hydrocarbons and benzene derivatives, toxic and harmful gases, gas sulfides, nitrogen oxides, etc.);

    2． Analysis of drinking water (polycyclic aromatic hydrocarbons, pesticide residues, organic solvents, etc.);

    3． Water resources (including organic pollutants in freshwater, seawater, and wastewater);

    4． Soil analysis (organic pollutants);

    5． Solid waste analysis.

    3、 Chromatography The main applications in food analysis are as follows:

    1Analysis of fatty acid methyl esters;2Pesticide residue analysis;3Analysis of essence and fragrance;

    4Analysis of food additives;5Analysis of volatile compounds in food packaging materials.

    4 The main applications of chromatography in pharmaceutical analysis are:

    1Determination of estriol;2Determination of Pregnanediol and Pregnanediol in Urine;

    3Determination of cholesterol in urine;4Analysis of catecholamine metabolites;

    5Analysis of ethanol, anesthetics, and amino acid derivatives in blood;

    6The testis in the bloodWANHormone analysis;7Analysis of certain volatile drugs.