Component analysis of BaijiuGas phasechromatographit's meCompany BasisGB/T10345-2007National standard of Analytical Methods for Baijiu, combined with China'straditionmakewinetechnology, in order to * * determine the content of main flavor components in BaijiuA high-performance and cost-effective chromatograph developed.The host adoptsHigh sensitivity hydrogen flame detector（FID）And filling columns/Capillary column injection system，And equipped with stainless steel filling columns specified by national standardsperhapsCapillary chromatography column can be used for both routine detection and analysis of trace aroma components.DNPDirect injection of mixed column can be measured in one go14Main alcohol, aldehyde, and ester contents，This method has been widely used in Baijiu factories，And it has been listed as a national standardGB10781-1998The detection method for medium strong aroma and light aroma wines. Direct single injection of capillary column can accurately quantify more than 50 components, including free organic acids and * * fatty acids, so that people can understand the content of flavor components in Baijiu and their relationship withwindThere is a new understanding of the relationship between taste and quality.This will undoubtedly improve the quality control of BaijiudetectionThe analysis has pushed to a new height and provided a good data guarantee for the microcomputer blending of Baijiu.
1Main performance characteristics:
1、GC-9860typeGas phase analysis of Baijiu componentschromatographAdopting a fully microcomputer automatic control system,Adjustable LCD display screen, displaying rich and intuitive content; Chinese keyboard style operation, setting parameters and operation are very convenient. Adopting brand new doubleCPUDesign, original Japanese high integration electronic circuit technology,Excellent reliability and anti-interference ability,The precision of temperature control has reached0.1℃And it can simultaneously display the power consumption percentage of each heating part.
2、manyDesign of gas path and large volume column chamber,Can install three chromatography columns simultaneously and simultaneouslyFID、TCDTwo types of detectors that can be easily expandedECD、FPD、NPDThree types of detectors, as well as external control equipment such as gas injectors and converters.
It's okayFrom singleFIDAmplifier expanded to dualFIDAmplifier, * * achieves multi-purpose use on one machine.
3Equipped with two packed column vaporization chambers and an independent capillary dedicated system, the design of the vaporization chamber draws on the miniaturization design of similar foreign products, with fast heating speed and no injection dead corners,Has excellent capillary diversion capability/The non split sampler and tail blowing system can easily install small-diameter capillary columns, large-diameter capillary columns, and various packed columns. Equipped with a fifth order linear program heating function,Satisfied with multi-component sample analysis.
4The column chamber is equipped with a variable frequency intelligent rear door automatic cooling system, The cooling rate is very fast280℃drop to50℃It only needs5minute)Realized near room temperature operation in the sense of * *.Six independent temperature control systems.Suitable for installing multiple temperature control requirements such as conversion furnaces;Column chamber, gasification chamber, hydrogen flame detection chamber, thermal conductivity detection chamber, auxiliary1Assist2All adopt modular design,Installation and replacement are more convenient.
5It has power failure protection function and can automatically memorize set parameters. It has anti power mutation interference function and stopwatch timing function. Equipped with over temperature protection function, the power automatically shuts off and an alarm is triggered when the temperature exceeds the set upper limit. If the temperature of any circuit exceeds the set temperature, heating will automatically stop; And there are prompts for the cause of the malfunction and alarms.36Plant self diagnostic information, display the cause of the fault and its handling methods at any time.
6Stable pneumatic system:
（1）The carrier gas flow rate adopts a dual stability design of first stabilizing the pressure and then stabilizing the current;
（2）**The pneumatic control valve components have high reproducibility and stability.
7Multiple injection methods are available:（1）Fill the column head for injection; （2）Filling column gasification injection; （3）Capillary diversion/Non diversion injection: back pressure valve control technology, linear diversion;

IITemperature control indicators:
1）Column box: room temperature+5℃-400℃ Accuracy:0.1℃ Higher display accuracy up to0.01℃
2）Sample injector: room temperature+5℃-400℃ Accuracy:0.1℃ Higher display accuracy up to0.01℃
3）Detector: Room temperature+5℃-400℃ Accuracy:0.1℃ Higher display accuracy up to0.01℃
4）Column temperature box volume:248*248*260MM
5）Program heating order:eightLinear range rise
6）Program heating rate:0.1℃~40℃ （0.1℃Incremental)
7）Constant temperature holding time for each stage:0~9999.9min（0.1minIncremental)

IIITechnical specifications of detector:

GC-FID(FID)：

Cylindrical collection electrode structure design, quartz nozzle, extremely responsive

Detection limit:≤8×10-12g／s(HEXADECANE/isooctane)

Baseline noise:≤2×10-13A

Baseline drift:≤2×10-12A/30min

Linear:≥106

Stable time: Ten minutes

4、 Instrument standard configuration:

1Host:Gas chromatograph for component analysis of BaijiuGC-9860, equipped withFid（FID）

2Baijiucolour spectrumfillanalytical column2Mx3mmOr capillary chromatography column30Mx0.32mm

3Lu Chuang Zhejiang UniversityN2000Dual channelChromatography workstation (software)

4Gas source:1)、LCH-300Hydrogen generator2)、LCN-300Nitrogen generator3）TheLCA-2000Air generator

5Computer, printer (self provided)

6Size:560X460x460 mm

7Weight:50 kg(WOODEN CASE)