brand | ZKP/Zhongkepu |
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[Product Introduction]Establish a method for determining the content of β - pinene in the volatile oil of Qingqiao and measure its content. Method: Purification and crude extraction of volatile oil from Qingqiao were carried out using anhydrous ethanol; The content of β - pinene was determined by gas chromatography. Result: Cyclohexanone was used as the internal standard; The linear relationship of β - pinene reference substance is good within the concentration range of 0.3-4.4mg · mL ^ -1 (r=0.9999); The RSD of precision for the reference substance and sample were 0.95% and 0.99%, respectively (n=5); The average recovery rate was measured to be 98.5%, with an RSD of 1.2% (n=5); The content of β - pinene in the volatile oil of Qingqiao ranges from 10.2% to 10.2%, with an average content of 10.2% and an RSD of 1.0%. Conclusion: This method is fast, accurate, reliable, simple and feasible, and can be used for quality control of Qingqiao volatile oil.
Analysis spectrum of β - pinene
GC-2010Type gas chromatographDetailed information: 1.High cost performance ratio, complete dual air circuit design: can be installed simultaneouslyFID、TCD、FPDperhapsFID、TCD、ECDThree detectors can be installed simultaneously, including one packed column and one capillary column, as well as optional types such as dual capillary and dual amplifier. Choose from five detectors and methane converters, ceramic or quartz nozzles. 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 it can simultaneously display the power consumption percentage of each heating part. Six channel temperature turbidity automatic alarm and automatic power-off protection function. Main technical specifications of the detector Hydrogen flame ionization detector(FID) (1)Cylindrical collection electrode structure design, quartz nozzle, responsive* (2)Detection limit:≤8×10g/s(HEXADECANE/isooctane) (3)Baseline noise:≤2×10A (4)Baseline drift:≤2×10A/30min (5)Linear:≥10 Thermal conductivity detector(TCD) (1)Adopting a semi diffusive structure (2)The power supply adopts constant current control mode (3)Sensitivity:≥2500mV·ml/mg(HEXADECANE/isooctane). (4)Baseline noise:≤20μV. (5)Baseline drift:≤100μV/30min. Note: External dimensions: 660 * 460 * 465mm Machine weight: 60 kg Input power supply: AC 220V ± 10% 50HZ 2KW |