Fully automatic headspace sampler

I. Overview

HLDK-A90 seriesFully automatic headspace samplerOur company has developed and launched a product with high sample count, high heating count, fully automatic, compact structure, and convenient human-machine interactionFully automatic headspace samplerThe principle is to place the sample to be tested in a closed container, heat and raise the temperature to make the volatile components in the sample evaporate from the sample matrix. After reaching equilibrium, the upper gas is directly extracted and sent to post-processing equipment such as gas chromatography for analysis, thereby detecting the composition and content of volatile components in the sample.

2、 Performance indicators

1. Temperature control of headspace furnaceRange: Room temperature~260℃Step 1℃

2. Temperature control range of valve injection system: room temperature~220℃Step 1℃

3. Temperature control range of sample transfer pipeline: room temperature~220℃Step 1℃

4. Temperature control accuracy:<± 0.1 ℃

5. Temperature control gradient:< ±0.1℃

6. Headspace furnace number of workers: 6 or 12

7. Headspace bottle workstation:40/80/120 workstations

8. Headspace bottle specifications: standard20ml (customizable with specifications such as 10ml)

9. Injection pressure range:0～0.4Mpa， Continuously adjustable

10. Monitoring pressure range: 0-0.4Mpa, pressure gauge display

11. Analysis repeatability: RSD<1.5% (200ppm ethanol water solution), with GC performance related)

12. Power supply: AC220V 50Hz

13. Power: 600W

3、 Main functions and features

1. Fully automatic system, safe and reliable, one click operation, can be unattended

2. Modular design of software and hardware, compact structure

3. The software interface is rich in information, with simple human-computer interaction and easy operation. It has the following functions:

a) Display information includes: multi method parameter settings, real-time working status, running process and time information, etc

b) The headspace bottle, injection system, and sampling (injection) catheter are coordinated through software to achieve three-way heating and temperature control

c) 10 methods for editing, storing, and calling at any time

d)Can start synchronouslyGC、 The chromatographic data processing workstation can also be started by an external event program to achieve multiple repeated injections of the same sample bottle

e) Equipped with self checking function (board level and gas circuit) and fault display function

4. Automatic positioning of the sample disk and real-time display of the disk number on the software end

5. The sample transfer tube (including sampling needle) and injection valve have automatic blowback function, which avoids cross contamination of different samples

6. The combination of a six way valve and a quantitative ring effectively reduces dead volume and improves analytical sensitivity

7. The six way valve and transmission pipeline link have no transmission cold points, ensuring the integrity of the sample

8. Allow the addition of samples during the experimental process without the need for resetting or interrupting the original experimental sequence, making it flexible and convenient

9. Support dual channel injection function for the same sample (user selectable)

10. Support the installation of sample bottle oscillation function, shorten balance time, improve sensitivity and repeatability (user selectable)

4、 Common application areas and examples of headspace injection gas chromatography analysis

Headspace injection can adapt to samples mainly including liquids, solids, and mixtures, such as volatile organic compounds in drinking water, wastewater, tested food, drugs, blood, soil, water, mud, cosmetics, soap, packaging materials, metal foil, paper, mineral mud, spices, and so on. The commonly used fields currently include:

1. Petrochemical industry: Determination of volatile organic compounds in polymer monomer coatings, etc

2. Environmental Science: Determination of volatile halogenated hydrocarbons in drinking water and organic toxic volatile compounds in industrial wastewater

3. Hygiene and Epidemic Prevention: Analysis of Disinfection and Fumigation Residues in Medical Supplies

4. Food industry: quality control of colored wine, vinegar, soy sauce, analysis of residual acetaldehyde in packaging materials, and residual solvent 6 # in extracted oil

5. Spice essence: flavor analysis in beer and tea

6. Quality inspection of drugs: analysis of organic residual solvents in drugs

7. Forensic Chemistry: Determination of Ethanol, Ketones, and Aldehydes in Blood and Urine

8. Other:For example, determination of volatile organic compounds in soil, etc

5Headspace-List of Main Standards Applicable to Gas Chromatography

•GBT16886.7-2015Biological Evaluation of Medical Devices7Partial residual amount of ethylene oxide sterilization

•GAT 842-2009Method for testing blood alcohol content

•QB/T 4850-2015Method for determination of volatile esters in wine

•QB/T 4708-2014Method for determination of volatile alcohols in Huangjiu

•QB/T 4709-2014Method for determination of volatile esters in Huangjiu

•SN/T 4182-2015Determination of epoxy propane and epoxy chloropropane monomers in imported epoxy resin coatings

•SN/T 4148-2015 Volatile organic compounds in packaging materials(VOCs)The determination

•SN/T 4068-2014Determination of residual solvent content in coatings of regenerated cellulose film materials for food contact materials

•SN/T 3600-2013Determination of residual monomers and other volatile low molecular weight compounds in raw rubber

•SN/T 3616-2013Method for detecting organic volatile compounds in wooden materials

•HJ 620-2011 Determination of volatile halogenated hydrocarbons in water quality

•HJ 810-2016 Determination of volatile organic compounds in water quality

•HJ 895-2017 Determination of Methanol and Acetone in Water Quality

•HJ 874-2017Solid waste bxqDetermination of Acrylonitrile and Acetonitrile

•HJ 736-2015Determination of volatile halogenated hydrocarbons in soil and sediment

•HJ 679-2013Soil and sediment bxqDetermination of Acrylonitrile and Acetonitrile

•HJ 642-2013Determination of volatile organic compounds in soil and sediment

•HJ 643-2013Determination of volatile organic compounds in solid waste

•HJ 742-2015Determination of volatile aromatic hydrocarbons in soil and sediment

•HJ 714-2014Determination of volatile halogenated hydrocarbons in solid waste

•HJ 760-2015Determination of volatile organic compounds in solid waste

•DIN 38407-43-2014 Check the water,German standard method for wastewater and sludge, substances that can be jointly determined(Fgroup)第43part:Determination of volatile organic compounds in selected water

•TCVN 7873-2008 Determination of benzene content in water

ISO17052-2007 Determination of residual monomers and other volatile low molecular weight compounds in natural rubber