The residue of solvent No. 6, mainly composed of low bond alkanes, in the extracted oil has a significant impact on the rheological, color, odor, oxidative stability, and other physicochemical properties of the product,At the same time, its toxicity also poses a potential threat to the edibility of fats and oils.sixThe main components of the solvent are n-hexane and heptane, containing small amounts of harmful substances such as benzene and toluene. It is a toxic solvent that anesthetizes the respiratory center. In edible oilsixExcessive residual solvent levels can lead to mental paralysis or even paralysis if consumed for a long time.According to the national standardGB16629-1996《6Standard for Extraction Solvent Oil ，Extracting vegetable oilcentresixSolvent residue detection specialistusegas chromatograph, using the original United StatesHP5890Core technology,Independently innovate and design a gas chromatography system with leading domestic levelThe stability has been significantly improved.A headspace sampling gas chromatography hydrogen flame ionization detector was established to detect residual solvent No. 6 in edible oil. The experiment shows that our methodCase,Simple operation，High accuracy and precision，All meet the testing requirements，The recovery rate is less than95%，RSDless than10%.
1Shandong LuchuangGC-9860ZThe main performance characteristics are:
1The instrument adopts 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.
2 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℃, with higher display accuracy0.01℃, and can simultaneously display the power consumption of each heating partpercentage.
3Design of Three Gas Channels and Large Volume Column Chambers,Can install three chromatography columns simultaneously and simultaneouslyFID、TCDTwo types of detectors, And conveniently expandECD、FPD、NPDThree types of detectors, as well as external control equipment such as gas injectors and converters.
4This machine can be easily converted from a single deviceFIDAmplifier expanded to dualFIDAmplifier, * * achieves multi-purpose use on one machine.
5Equipped 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.
6Equipped with a five order linear program heating function,Satisfied with multi-component sample analysis.
7The column chamber is equipped with a variable frequency intelligent rear door automatic cooling system, The cooling rate is very fast,(follow280℃drop to50℃It only needs5minute Realized near room temperature operation in the sense of * *.
8Equipped with 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.
9It has power failure protection function and can automatically memorize set parameters. It has anti power mutation interference function and stopwatch timing function.
10It has an over temperature protection function, which automatically shuts off and alarms 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 alarm prompts.
11Having0℃”Protection function. When any temperature display is consistently0℃”When, All heating will automatically stop to prevent the heating element from being damaged due to constant heating in the room.And there are prompts for the cause of the fault and alarm prompts
12Similar products have a gas cut-off protection prompt function, which can provide limited protectionTCDrheniumThe tungsten wire and chromatographic column are not damaged.
13It has a wide range of fault self diagnosis functions,36Plant self diagnostic information, display the cause of the fault and its handling methods at any time.
14Stable 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.
15Multiple injection methods are available:
II Shandong LuchuangGC-9860ZTemperature control indicators:
1)Column box: room temperature 5℃-400℃ Accuracy:0.1℃ Higher display accuracy up to 0.01℃
2)Sample injector: room temperature 5℃-400℃ Accuracy:0.1℃ Higher display accuracy up to 0.01℃
3)Detector: Room temperature 5℃-400℃ Accuracy:0.1℃ Higher display accuracy up to 0.01℃
4)Column temperature box volume: 248＊248＊260MM
5)Program temperature rise order: fifth order linear range rise
6)Program heating rate:0.1℃~40℃(0.1℃increment)
7)Constant temperature holding time for each stage:0~9999.9min(0.1minincrement)
IIIShandong LuchuangGC-9860ZTechnical specifications of the detector:
detector Sensitivity/sensitivity noise drift linear characteristic
FID Mf≤1×10 -11 g/s ≤ 0.02mV ≤ 0.15mV/h ≥107Circular collection electrode, corundum ceramic nozzle
TCD S≥3000mV.ml/mg ≤ 0.02mV ≤ 0.15mV/h ≥105 Imported rhenium tungsten wire, constant current power supply
4In vegetable oilsixSolvent residue detection specialistusechromatographconfiguration：
Testing items in vegetable oilSolvent No. 6Determination ofanalysis
1、Chromatographic instrument modelLu ChuangGC-9860typeGas phasechromatograph be equipped withFIDdetector2Solvent No. 6for a special purposepacked columncolumn3、Chromatography workstationN2000(Computer)1Self provided by Taiwan)4、nitrogen、hydrogen、Empty generator every1Taiwan or high-purity nitrogengasOne hydrogen and one air cylinder each
The company's service advantages:
1The technical indicators of the company's products strictly comply with the requirements of technical documents, and the product quality meets the requirements of relevant national standards.
2The product is installed, debugged, and trained by technical personnel or provided with free telephone guidance.
3After the product is accepted as qualified, during the one-year warranty period, except for human damage factors, our company guarantees free maintenance; Lifetime maintenance of equipment, with only cost charges for vulnerable parts, free technical support, and discounted accessory supply.
4The company's after-sales service engineers have received training in chemical analysis, instrument repair, and maintenance. They can maintain and repair various components to ensure that your instrument runs smoothly and can solve your problems quickly.
5Timely telephone support----The troubleshooting expert will answer your call and provide timely solutions to the problem.
6Effective and high-quality pre-sales and after-sales services distributed within * * * *.2424-hour uninterrupted online instrument problem solving.
7Flexible and fast response time----Provide timely telephone guidance or72Solve the problem on-site within hours.
8There are free and irregular chromatography training courses every year. The content includes chromatographic principles, analysis, applications, technical instrument operation, and assistance in troubleshooting and maintenance.
Other analysis plans of the company: