Non methane hydrocarbons (NMHC) typically refer to all volatile hydrocarbons other than methane(Mainly C2)—C8）Also known as non methane hydrocarbons. When the concentration of NMHC in the atmosphere exceeds a certain level,Except directlyIn addition to being harmful to human health,Under certain conditions, when exposed to sunlightIt can also produce photochemical smog, posing a threat to the environment and humans.There are many methods for monitoring NMHC in ambient air and industrial waste gas, but currently most countries use gas chromatography. Due to the high cost of instruments used for direct determination of NMHC, we adopted a dual column dual hydrogen flame ionization detector gas chromatography method to measure the content of total hydrocarbons and methane separately, with the difference between the two being the content of NMHC. The NMHC measured under specified conditions is the total amount of hydrocarbons other than methane that shows a significant response to the gas chromatography hydrogen flame ionization detector, measured in carbon.
China's Comprehensive Emission Standards for Air Pollutants（GThe boundary concentration standard for non methane total hydrocarbons in B1627-1996 is 5mg/m3. According to the companyGB/T15263-94Determination of Total Hydrocarbons in Environmental Air by Gas Chromatography, National Environmental Protection Administration StandardHJ/T38-1999Determination of Non Methane Total Hydrocarbons in National Pollution Source Emissions by Gas Chromatography、According to the fourth edition of the "Air and Waste Gas Monitoring Methods"reachRecommended Non MethaneassembleHydrocarbon thermal desorption method, throughscientific research personnelAfter years of hard work, we have successfully developed an innovative solution specifically designed for environmental monitoring departments for air quality monitoringGC-9860F(S)Type total hydrocarbon/Non methane total hydrocarbonsTesting specificGas chromatograph analysis system(Can be extended to detection)Benzene derivatives/TVOC）This solution not only accelerates the analysis cycle and improves work efficiency, but also has many advantages such as easy operation, accurate data, and one machine with multiple functions.instrumentuseDouble tube fixed volume injection valveDouble injection at oncefillColumn parallel connectiontwoOptimization plan for FID detection process to meet the detection of total hydrocarbons and non methane total hydrocarbonsanalysisrequirement.This plan has been implemented in multiple air quality enterprisesenvironmentEffective application of quality testing institutions.
1GC-9860F(S)Total hydrocarbons/Non methane total hydrocarbonsTesting specificGas chromatographmainFeatures and technical parameters:
1Main characteristics of the instrument

（1）Thetotal hydrocarbon/Non methane total hydrocarbonsDetection and analysisA gas chromatography system that can be used for various detection projects related to high and low concentration gas samples, including a dual hydrogen flame detector/Three injection ports/The design of a dual tube constant volume injection valve allows for the determination of total hydrocarbons, methane, and non methane total hydrocarbons in gas samples to be completed in one injection, without any changes in testing conditions or difficulties in quantification; Improved analysis speed compared to the standard column dismantling method4-5times.

（2）TheDouble tube fixed volume injection valve for non methane total hydrocarbon analysis, easy to operate, good repeatability, high accuracy, and high work efficiency——Effectively avoiding duplicate injections and controlling human errors; (Liberate experimental operators from tedious and cumbersome operations, provide work efficiency, while ensuring good data repeatability and accuracy).Simultaneously equipped with calibration system and simultaneous activation function, it greatly provides work efficiency and detection accuracy, and can also meet the requirements of relevant environmental air detection.

（3）TheDedicated dual channel workstation: Total hydrocarbons/Non methane total hydrocarbonsdetectionAnalysis specific dual channel chromatography workstation, equipped with non methane total hydrocarbon dedicated analysis moduleCan also be expandedTVOCanalysis moduleIt can have the dedicated function of automatically deducting the peak oxygen value and calculating the total non methane hydrocarbon content (in carbon) according to the corresponding national standard requirements, or it can be calculated according toGB/T 50325-2001The method required by the national standard has the specialized function of calculating the concentration of unidentified volatile organic compounds using the response coefficient of toluene. Effectively improve analysis accuracy and processing speed.

（4）TheEquipped with a fully automatic thermal desorption analyzer, it can be used for multiple purposes, including the analysis of benzene derivatives in ambient air using thermal desorption methodTVOCAnd trace amounts of non methane total hydrocarbons; (The plan should meet the testing requirements of different concentrations in the environment).
（5）TheA dedicated chromatography workstation that does not require manual calculations (including oxygen peak deduction and methane peak deduction), and can complete all data conversion calculations and directly obtain results in one step according to the corresponding standard requirements; Simultaneously providing targeted servicesTVOCExclusive data processing module for analysis.
2Technical parameters of the instrument:

Column temperature: Temperature control range: Room temperature+10℃～399℃
Temperature control accuracy: superior to±0.1℃
Temperature gradient: The effective area of the column is not greater than2%
The deviation between the set temperature and the displayed temperature should not exceed1℃
The deviation between the set temperature and the actual temperature shall not exceed2%
Gasification chamber: Temperature control accuracy:±0.1℃(Room temperature)+15℃～200℃）； greater than200℃do±0.2℃
Testing room: Temperature control accuracy:±0.1℃(Room temperature)+15℃～200℃）； greater than200℃do±0.2℃

3、Technical specifications of detector:

IIGC-9860F(S)Total hydrocarbons/Non methane total hydrocarbonsTesting specificgas chromatographdeviceto configure:
1.GC-9860F (S) gas chromatograph 1 unit
2. Ten way valve 1 piece
3. Stainless steel analysis column 2 pieces
4. Standard gas (8 liters) 10ppm CH4/N2 1 bottle
5. Pressure reducing valve 752 (standard gas) 1 piece
6.100ml glass syringe 10 pieces
7.10ml glass syringe 5 pieces
8. Gas sampling bag (1-2 liters) 10 pieces
9. Air hydrocarbon purifier JO-4 1 unit
10. Chromatography Workstation N2000 1 unit
11. Computer/Printer(Self provided) 1 set
12. High purity nitrogen ≥ 99.99% (including pressure reducing valve) 1 bottle
13. High purity hydrogen generatorLCH-300 1 unit
14.Air generator LCA-2000 1 unit
IIIThis planexistDuring the development process, a large number of international standards and multiple national, industry, and local standards were extensively referenced：
GB/T15263-94Determination of Total Hydrocarbons in Environmental Air by Gas Chromatography, State Environmental Protection Administration
HJ/T38-1999Determination of Non Methane Total Hydrocarbons in Exhaust Gas from Fixed Pollution Sources by Gas Chromatography, State Environmental Protection Administration
WS/T141-1999Determination of Non Methane Total Hydrocarbons in Workplace Air by Gas Chromatography "by the Ministry of Health of China
GB11737-89Standard Method for Hygienic Inspection of Benzene, Toluene, and Xylene in the Atmosphere of Residential Areas - Gas Chromatography Method "by the Ministry of Health
GBZ/T 16040－2004Method for determination of mixed hydrocarbon compounds in workplace air "by the Ministry of Health of China
GB/T18883-2002Indoor Air Quality Standards "jointly released by the National Quality Inspection, Ministry of Health, and Environmental Protection Bureau
GB50325-2001Code for Indoor Environmental Pollution Control of Civil Building Engineering "National Quality Inspection Bureau、Ministry of Construction
IS0 160117-1Indoor Environment and Workplace Air Sampling and Adsorption Tube/Analysis of Volatile Organic Compounds by Capillary Gas Chromatography

Our company's other analysis plans:
Gas chromatograph:
High purity gas analysis dedicated gas chromatograph┆Specialized gas chromatograph for trace moisture analysis┆Special for natural gas analysisgas chromatographyinstrument┆Special gas chromatograph for analysis of liquefied petroleum gas┆transformergas in oilAnalysis specific gas chromatograph┆Refinery gas analysis dedicated gas chromatograph┆Special gas chromatograph for packaging material product analysis┆PaintOrganic compound detection in Chinagas chromatograph┆Special gas chromatograph for product analysis of power plants and substations┆indoor aircentreTVOCDetection gas chromatograph┆Gas chromatograph for component analysis of Baijiu┆Gas chromatograph for the detection of essence and fragrance in Baijiu┆Detection of residual ethylene oxide in medical devices by gas chromatography┆Dimethyl ether detection chromatograph in liquefied gas┆Gas chromatograph for detecting alcohol content in blood using headspace method┆Drug solvent residue detection gas chromatograph┆Chromatograph for detecting organophosphate pesticide residues in food┆Detection of pesticide residues such as BHC and DDT in food using a chromatograph┆Natural gas component analysis gas chromatograph┆Liquefied petroleum gas component analysis gas chromatograph┆Analytical chromatograph for oxygen-containing compounds and aromatic hydrocarbons in automotive gasoline┆Tobacco and tobacco packaging materialsVOCSDetection gas chromatograph┆Turpentine detection gas chromatograph┆ Coal mine underground gas analysis gas chromatograph ┆ Non methane total hydrocarbon detection gas chromatograph in the air ┆Sulfur containing/nitrogenous/Analysis of oxygen-containing compoundsgas chromatograph┆ Analysis of Food Additives Gas Chromatography ┆Analysis of Organochlorine Pesticide Residuesgas chromatograph┆Analysis of Organophosphorus Pesticide Residuesgas chromatograph┆ Analysis of tar benzene derivatives by gas chromatography ┆ Analysis of alcohols and ethers in gasoline by gas chromatography ┆Detection of solvent residues in vegetable oilgas chromatograph Gas chromatograph for detection of solvent residues in printing and packaging ∨ Gas chromatograph for analysis of pharmaceutical intermediates ∨ Gas chromatograph for detection of No. 6 solvent in edible oil ∨ Gas chromatograph for detection of plasticizers in Baijiu ∨ Gas chromatograph for detection of benzene series in indoor air ┊Online automatic gas analysis dedicated gas chromatograph┊Helium ion high-purity gas analysis dedicated gas chromatograph┆ Fully automatic microcomputer reverse controlgas chromatograph┆ New generation fullEPCControl gas chromatograph
effectiveLiquid chromatograph:
twoMeta gradient effective liquid chromatography┆Special liquid chromatography instrument for melamine detection and analysis┆ Traditional Chinese Medicine TestingEffective liquid chromatography instrument┊High pressure gradient liquid chromatography│Economical, practical and effective liquid chromatography instrument┆feedTesting specificeffectiveLiquid chromatograph┆Special liquid chromatography instrument for analysis of arachidonic acid in honey┆Special liquid chromatography instrument for paint and coating analysis┆Special liquid chromatography instrument for drug and pesticide residues┆ Vitamin detection in feed by liquid chromatography ┆ Traditional Chinese medicine decoction piece detection by liquid chromatography

Lu ChuangThe clothingaffairAdvantages:
1. The technical indicators of the company's products meet the requirements of the technical documents, and the product quality meets the relevant national standardstechnologyrequirement.
2、The product is installed, debugged, and trained by technical personnel or provided with free telephone guidance.
3. After the product is accepted as qualified,a yearDuring the warranty period, except for human damage factors, our company guarantees free maintenance；Lifetime maintenance of equipment, charging only cost for vulnerable parts, providing free technical support and discounted accessory supply.
4.Lu ChuangofserviceEngineers have received training in chemical analysis, instrument maintenance, and upkeep. They can perform maintenance and repair on various components to ensure that your instrument runs smoothly and can solve your problems quickly
5Timely telephone technical support - experts in troubleshooting answer your calls and provide timely solutions to problems
6. * * * * Service--Lu ChuangProvided within the scope of * * * *Effectivehigh qualityAfter sales serviceService Online Q&A：QQ：377502153
7Flexible response time - after phone repairProvide phone guidance within 12 hours or arrive on-site within 72 hourssolve a problem.
8There are free and irregular chromatography training courses every year.The content includes chromatographic principles、analysis、application，Technical instrument operation，helpAssist the causeObstacle removal and maintenance.You can provide detailed product information by phone: 0632-5080618/Or log in to the company websitehttp://www.sdlcyq.comquery.