Korostelev Aleksej Vasilevich,Kuchmenko Tatyana Anatolevna,Novikova Inna Vladimirovna,Umarkhanov Ruslan Umarkhanovich,Rukavitsyn Pavel Vladimirovich
申请号：
RU20170109494
公开号：
RU2670651(C2)
申请日:
2017.03.21
申请国别(地区):
俄罗斯
年份:
2018
代理人:
摘要：
FIELD: chemistry.SUBSTANCE: invention relates to analytical chemistry and can be used to assess the identity or authenticity of food products, namely, granulated hop samples from different batches. To do this, sample preparation is carried out and an equilibrium gas phase is taken. Volatile odor components are identified using a "piezoelectronic nose" static detection device with a matrix of 7 chemical sensors based on piezoelectric quartz resonators, the electrodes being pre-modified with sorbent films. To this end, solutions of polyvinylpyrrolidone, polyethylene glycol phthalate, polyethylene glycol succinate, polyethylene glycol PEG-000, dicyclohexane-18-crown-6, bee glue (propolis), polyethylene glycol sebacate are applied to the electrodes so that the weight of the films after drying is 10–15 mcg. Responses of chemical sensors in the vapor of the equilibrium gas phase are fixed for 60 s and formed as a sum signal into the "visual imprint" of the maxima, which is compared in the software of the instrume
