The gas chromatograph can detect the following items:

Transformer oil detection, blood alcohol content detection, bottle embryo "AA" detection, residual ethylene oxide EO detection, indoor environment detection, cigarette packet VOC content detection, Baijiu analysis and detection, liquefied petroleum detection, gasoline benzene homologues analysis, printing ink coating detection, anti heptafluoropropane detection, etc. Please consult Shanghai Yongnuo Biotechnology Co., Ltd. directly. Our company will issue a product configuration scheme suitable for your unit's experiment according to your industry standards, customize the product for your experiment, select a cost-effective gas chromatograph, and escort your experiment!

Due to the large number of products and incomplete display, please consult Shanghai Yongnuo Biotechnology Co., Ltd. directly for details of gas chromatography,Home installation training is included nationwide.

Linghua gas chromatograph

GC-9890A gas chromatograph

* Main features

1. The host comes with a two-way valve control system, which facilitates online automatic sampling.
2. The inter column compensation circuit electronically compensates for baseline drift during program temperature rise, reducing the complexity caused by the second column, detector, and auxiliary flow system.
3. The signals from the detector, heater values, furnace temperature, flow sensor readings, or stored column compensation baseline signals can all be assigned to a simulated output channel.
4. Self testing and fault diagnosis, experimental data stored for power-off protection, stopwatch and running timer, keyboard locking function.

5. Type A does not support anti control software or EPC function.

6. Can install the American HP-5890 gas chromatograph micro thermal conductivity detector to achieve * docking.
7. Can install two flow sensing channels and two single column compensation channels.
Heating furnace system
Temperature range: ambient temperature+5 ℃~400 ℃
Third order programmed heating, with a heating rate of 0-50 ℃/min; Incremental 0.1 ℃/min. Temperature control accuracy ± 0.05 ℃,
Users can recalibrate the furnace temperature and set the desired temperature.
The intelligent rear door opening system has stepless variable air flow in and out, which shortens the stable balance time of the system after heating/cooling. The time taken for the column box to drop from 300 ℃ to 50 ℃ is less than 15 minutes.
Sample injection system

1. Filler column sampler: suitable for various caliber filler columns and large-diameter capillary columns.
2. Capillary sampler: Optional split/non split injection system controlled by programming valve.
3. Optional options include Shanghai Sida's headspace sampler and thermal analyzer.
Detector system

1. Hydrogen flame ionization detector (FID):

Easy to disassemble and install, convenient for cleaning or replacing nozzles, simple to operate; The input signal can be logarithmic amplified, reducing interference, with high sensitivity, good linearity, and wide range.
Sensitivity: Mt ≤ 5 ×10-12G/s (n-hexadecane)
Baseline noise: ≤ 6 ×10-12A/H
Linear range: ≥105
Stable time:<0.5h

2. Thermal conductivity detector (TCD):

Sensitivity: Type A: ≥ 3000mv • ml/mg (n-hexadecane)

Type B: ≥ 5000mv • ml/mg (n-hexadecane)
C-type (micro pool amplification): ≥ 10000mv • ml/mg (n-hexadecane)

Baseline noise: ≤ 30 μ v (with a carrier gas of 99.999 helium)
Stable time: Type C<15min

GC9890B gas chromatograph

GC9890B gas chromatograph is one of the gas chromatography series produced by Shanghai Linghua Instrument Co., Ltd. This gas chromatograph can be installed with 5 types of detectors. And the sensitivity and stability of this gas chromatograph are both very high. It is a product that meets various application analysis needs of manufacturers.

* Main features
1. The friendly human-machine dialogue interface makes your operation simpler.

2. The split/non split injection system makes analysis flexible and convenient.

3. Equipped with a dual valve control system, it facilitates online automatic sampling.

4. The high-precision EFC (flow rate) system makes your flow rate clear at a glance and can accurately set the gas flow rate.
5. A comprehensive detection and fault diagnosis system can enable you to quickly identify and solve problems with the instrument.

6. A wider temperature control range: ambient temperature+5 ℃~450 ℃, making the sample analysis range wider.

7. Can install the American HP-5890 gas chromatograph micro thermal conductivity detector to achieve * docking.

8. The gas cut-off protection system can greatly prevent damage to the detector and chromatographic column.

9. The column box can be equipped with a low-temperature control system, with a low temperature control of -80 ℃, to meet your needs for low boiling point substance analysis.
10. The inter column compensation circuit electronically compensates for baseline drift during program temperature rise, reducing the complexity caused by the second column, detector, and auxiliary flow system. Two single column compensation channels can be installed simultaneously.

Column temperature box system
Temperature range: ambient temperature+5 ℃~450 ℃
Third order programmed heating, with a heating rate of 0-50 ℃/min; Incremental 0.1 ℃/min. Temperature control accuracy ± 0.015 ℃,
Users can recalibrate the furnace temperature and set the desired temperature.
The intelligent rear door opening system has stepless variable air flow in and out, which shortens the stable balance time of the system after heating/cooling. The time taken for the column box to drop from 300 ℃ to 50 ℃ is less than 12 minutes.

Sample injection system
1. Filler column sampler: suitable for various caliber filler columns and large-diameter capillary columns.
2. Capillary sampler: Optional split/non split injection system controlled by programming valve.
3. Optional options include Shanghai Sida's headspace sampler and thermal analyzer.

Detector system
1. Hydrogen flame ionization detector (FID):

Easy to disassemble and install, convenient for cleaning or replacing nozzles, simple to operate; The input signal can be logarithmic amplified, reducing interference, with high sensitivity, good linearity, and wide range.

Detection limit: Mt ≤ 5 ×10-12G/s (n-hexadecane)
Baseline noise: ≤ 6 ×10-12A/H
Linear range: ≥105
Stable time:<0.5h

2. Thermal conductivity detector (TCD):

Sensitivity: ≥ 5000mv • ml/mg (n-hexadecane)

Microcell amplification ≥ 10000mv • ml/mg (n-hexadecane)

Baseline noise: ≤ 30 μ v (with a carrier gas of 99.999 helium)
Stable time: C-type<1.5h

3. Flame photometric detector (FPD):

Detection limit: Phosphorus Mt ≤ 5 × 10 ^ 310-12G/s (Ethyl-1605)

Sulfur measurement Mt ≤ 1 ×10-11G/s (thiophene)

4. Electron Capture Detector (ECD):

Detection limit: Mt ≤ 1 ×10-13g/ml(r-666)

5. Nitrogen phosphorus detector (NPD):

Detection limit: Phosphorus Mt ≤ 5 × 10 ^ 310-12g/s（Ma LaSulfur and phosphorus）

Nitrogen measurement Mt ≤ 5 × 10 ^ 310-12G/s (azobenzene)

* Instrument appearance dimensions

450mm*450mm*600mm 46KG

GC9890E gas chromatograph

Shanghai Linghua Instrument Co., Ltd. recommends the new intelligent gas chromatograph GC9890E to you. It has an excellent intelligent control system that can achieve 6-way EPC control and automatic gas cut-off protection function.

We have independently developed a highly stable instrument control system, a reliable anti-interference system, and an optional automatic sampler to achieve unmanned gas chromatography analysis. Realize automation, intelligence, and diversification of operations.

The instrument can achieve 6-channel EPC control, and the EPC (Electronic Flow Control) system makes it easy to set the gas flow rate accurately, improving the reproducibility and stability of analysis, and ensuring the authenticity, accuracy, and reliability of experimental results.

This instrument has a wider temperature control range: ambient temperature+5 ℃ -450 ℃ makes the analysis of samples more extensive.

*The gas cut-off protection system can minimize damage to the thermal conductivity detector and chromatographic column.

This instrument can be equipped with an ultra-low temperature control system, achieving ultra-low temperature control of -80 ℃, which is sufficient to meet your needs for low boiling point substance analysis.

Intelligent gas chromatograph instrument parameters:

Temperature range: -80 ℃ (liquid nitrogen) -450 ℃

Program heating: heating rate 0-50 ℃/min; Incremental 0.1 ℃/min; Temperature control accuracy ± 0.015 ℃;Users can recalibrate the furnace temperature themselves and freely set the high protection temperature.

(Hexadecane)Thermal conductivity detector (TCD): sensitivity ≥ 10000mv. ml/mg (n-hexadecane)

Flame photometric detector (FPD) detection limit: Phosphorus Mt ≤ 5 * 10-12G/s (ethyl-1605) sulfur measurement Mt ≤ 1 * 10-11G/s (thiophene)

Detection limit of electron capture detector (ECD): Mt ≤ 3 * 10-14g/ml(r-666)

Detection limit of nitrogen phosphorus detector (NPD): Phosphorus Mt ≤ 5 * 10-13g/s(马laSulfur and phosphorus）Nitrogen measurement Mt ≤ 1 * 10-12G/s (azobenzene)

Detection of 26 pesticide residues in vegetables and fruits GC9890E/HS-16A

Shanghai Linghua InstrumentDeveloped according to national standards and its own technical conditionsGC9890EPesticide residue dedicated detector, capable of efficiently detecting26Planting pesticide residues. Pesticide residue pollution is an important factor affecting food safety and has become the primary indicator for measuring food hygiene, safety, and quality. Organophosphorus and pyrethroid pesticides are widely used for pest control in vegetables due to their high insecticidal activity. Organochlorine pesticides, due to their long half-life, difficulty in degradation and metabolism, still exist in nature. Therefore, the analysis and research of various pesticide residues in vegetables are particularly important.

In vegetables and fruits26Instrument configuration for pesticide residue detection:

1. Instruments and Reagents

Linghua InstrumentGC9890EGas chromatograph with flame photometric detector(FPD)And electron capture detector(ECD), Supporting facilitiesHS-16AAutomatic headspace sampler and chemical workstation; Organizational crusher; Vortex mixer; High speed homogenizer; Nitrogen blower; Solid phase extraction column;Enemy Wei；Jia amino phosphate；Jia mixed with phosphorusAcetylJia amino phosphateMethyl pyrimidine phosphate; ChlorpyrifosOxygen Hua Le GuoLe Guo;Jiu efficient phosphorusQuinthion;Malathion; MethylDui sulfur and phosphorus；Dui sulfur and phosphorusKill phosphorus; α-666Baijunqing; β-666；δ-666；o,p-DDT;p,p-DDT; Bifenthrin;Jia CypermethrinFluchlorocyhalothrin; Chlorfenapyr; Cypermethrin;CypermethrinDilute each standard mixture to the desired concentration before use. Acetone, acetonitrile, and n-hexane are all pesticide residue grade, while sodium chloride is analytical grade.

2. sample preparation

2.1 Extraction: The sample is homogenized using a tissue crushing mechanism and accurately weighed20gJoin in50mlAcetonitrile, homogenized at high speed in a homogenizer1minAfter filtering with filter paper, the filtrate is collected in a container containing5~10gsodium chloride100mlCollect the filtrate in the measuring cylinder, cover it with a stopper, and shake vigorously1minLet it stand at room temperature30minSeparate the acetonitrile phase and aqueous phase clearly.

2.2 Sample purification

2.2.1Purification of Organophosphorus Pesticides: From100mlSuck from the measuring cylinder5mlAcetonitrile solution, put in10mlConcentrate to near dryness on a nitrogen blower in a graduated test tube. transfer2mlAcetone is mixed evenly in a graduated centrifuge tube using a vortex mixer and analyzed by gas chromatography.

2.2.2Purification of organochlorine and pyrethroid pesticides: from100mlSuck from the measuring cylinder10mlAcetonitrile solution, put in10mlConcentrate to near dryness on a nitrogen blower in a graduated test tube. transfer2mlDissolve the residue in n-hexane and mix well on a vortex mixer for purification.

Use solid-phase extraction in sequence5mlacetone/N-hexane5mlConditional pre washing with n-hexane, when the solvent level reaches the surface of the column adsorption layer, immediately add the sample solution and use10mlCollect eluent with a graduated centrifuge tube and use5mlAcetone: Wash the graduated centrifuge tube with n-hexane and pass it through a solid-phase extraction column, repeating the process once. Place the centrifuge tube on the nitrogen blower and adjust the water bath temperature50℃, nitrogen is blown and evaporated to below4mlDetermine the volume accurately with n-hexane4mlAfter mixing on a vortex mixer, analyze by gas chromatography.

3. Chromatographic analysis conditions

3.1 organophosphorus pesticides Analytical chromatographic column:DB-1701 30m*0.53mm*1.0MmCapillary chromatography column; High purity nitrogen is used as the carrier gas; Program heating up; inlet temperature200℃； Non diversion injection; detector temperature250℃； Quantitative analysis using peak area external standard method.

3.2 Organochlorine and pyrethroid pesticides Analytical chromatographic column:DB-1701 30m*0.32mm*0.25MmCapillary chromatography column; High purity nitrogen gas is used for the carrier; Program heating up; inlet temperature200℃； Non diversion injection; detector temperature320℃； Quantitative analysis of peak area using external standards.

4. Conclusion

This scheme is simple, sensitive, accurate, and meets the requirements of pesticide multi residue analysis.

Keywords: gas chromatography,solid-phase extraction,organophosphorus pesticides,Organochlorine pesticides,Pyrethroid pesticide

Gas chromatograph detection of triethylamine GC9890

Column temperature box system

Temperature range: ambient temperature+5 ℃~450 ℃
Third order programmed heating, with a heating rate of 0-50 ℃/min; Incremental 0.1 ℃/min. Temperature control accuracy ± 0.015 ℃,
Users can recalibrate the furnace temperature and set the desired temperature.
The intelligent rear door opening system has stepless variable air flow in and out, which shortens the stable balance time of the system after heating/cooling. The time taken for the column box to drop from 300 ℃ to 50 ℃ is less than 12 minutes.

Sample injection system

1. Filler column sampler: suitable for various caliber filler columns and large-diameter capillary columns.
2. Capillary sampler: Optional split/non split injection system controlled by programming valve.
3. Optional options include our company's headspace sampler and thermal analyzer.
Detector system

1. Hydrogen flame ionization detector (FID):

Easy to disassemble and install, convenient for cleaning or replacing nozzles, simple to operate; The input signal can be logarithmic amplified, reducing interference, with high sensitivity, good linearity, and wide range.
Detection limit: Mt ≤ 5 ×10-12G/s (n-hexadecane)
Baseline noise: ≤ 6 ×10-12A/H
Linear range: ≥105
Stable time:<0.5h

2. Thermal conductivity detector (TCD):

Sensitivity: ≥ 5000mv • ml/mg (n-hexadecane)

Microcell amplification ≥ 10000mv • ml/mg (n-hexadecane)

Baseline noise: ≤ 30 μ v (with a carrier gas of 99.999 helium)
Stable time: C-type<1.5h

The GC9890 series gas chromatograph produced by Linghua Instrument Co., Ltd. meets the requirements for residual analysis of organic solvents in drugs and is widely used in pharmaceutical factories、Wait.

Due to some product terms involving dangerous or prohibited words, the Linghua gas chromatograph has been changed to pinyin. Please contact Shanghai Yongnuo Biotechnology Co., Ltd. for color page information.

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