Distillation reflux instrument for detecting volatile matters in food and sample pretreatment method
A distillation unit and sample processing technology, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of poor repeatability of test results, low material gasification efficiency, uncontrollable fraction temperature, etc., and achieve simple and reliable test operation and improve efficiency. , The effect of improving detection efficiency and detection accuracy
A distillation unit and sample processing technology, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of poor repeatability of test results, low material gasification efficiency, uncontrollable fraction temperature, etc., and achieve simple and reliable test operation and improve efficiency. , The effect of improving detection efficiency and detection accuracy
CN110286142APending Publication Date: 2019-09-27TIANJIN UNIV
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[0022] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0023] Since the position of the product of the present invention can be changed at will, the directional words such as "up", "down", "left" and "right" in the present invention only indicate the relative positional relationship, and are not used to limit absolute The positional relationship.
[0024] The invention discloses a distillation reflux instrument, including:
[0025] Distillation unit for distilling the sample to be processed;
[0026] A heating unit, which provides steam to the distillation unit to heat the sample to be processed;
[0027] End point quantitative unit for monitoring the amount of distillate produced by the distillation unit; and
[0028] The control unit is used to control the on-off of the circuit ...
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The invention discloses a distillation reflux instrument for detecting volatile matters in food and a sample pretreatment method, and the distillation reflux instrument comprises: a distillation unit which is used for distilling a to-be-treated sample; a heating unit used for providing water vapor for the distillation unit so as to heat the to-be-treated sample; an end point quantification unit for monitoring the amount of fraction produced by the distillation unit; and a control unit used for controlling the on-off of circuits of the distillation unit and the heating unit according to a signal output by the end point quantification unit. The instrument has the advantages of water resource saving, is simple and reliable in test operation, high in automation degree and good in man-machine interaction, can effectively improve the detection efficiency and the detection precision, is suitable for determination of the contents of nitrosamine, cyanide, volatile phenol and the like in organic matters, and has the advantages of novel idea, good safety, sample pollution prevention and high reflux efficiency.
Description
Technical field [0001] The invention relates to the technical field of detection of volatile substances in foods, and specifically refers to a distillation reflux instrument used for detection of volatiles in foods and a sample pretreatment method. Background technique [0002] Simultaneously carry out essential oils and volatile phenols from orange peel, extract camphor wood essence from the fermentation products of Antrodia camphorata, and analyze and detect volatile N-nitrosamines, cyanides and volatile phenols in food. Steam distillation is An important method to extract volatile substances. The water vapor is continuously passed into the sample container, and the effective components are evaporated with the water vapor to achieve the purpose of separating and purifying the effective components. The water vapor carried after distillation carries a large amount of volatile substances, which enter the refluxer after condensation. Methods such as spectrophotometric titration an...
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Patent Timeline
27 Sep 2019
Publication
CN110286142A
- IPC
- G01N25/14
- CPC
- G01N25/142; G01N25/145
- Inventors
- 赵友全; 张密密