Quick detector for quality and safety of tea

A quality safety and testing instrument technology, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of expensive instruments, high price, low detection accuracy, etc., and achieve high automation, easy operation, and good intuition.

Inactive Publication Date: 2010-02-10
CHANGCHUN JILIN UNIV LITTLE SWAN INSTR
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  • Abstract
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AI Technical Summary

Problems solved by technology

Such as portable gas chromatography and spectrophotometry, etc., but various detection methods have some shortcomings, some detection methods require expensive instruments, some detection methods have low detection accuracy, cumbersome detection methods, time-consuming and laborious, and cannot detect tea on the spot quality
The chromatograph currently used on the market is not only expensive, but also generally not available in grassroots units, so it is extremely inconvenient to detect tea

Method used

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  • Quick detector for quality and safety of tea
  • Quick detector for quality and safety of tea
  • Quick detector for quality and safety of tea

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Embodiment Construction

[0033] Below with regard to the structural composition and the effect that can produce of tea quality and safety quick detector of the present invention, cooperate accompanying drawing to describe in detail as follows with preferred embodiment:

[0034] like figure 1 As shown, the tea quality and safety rapid detector of the present invention is provided with a casing 1, a liquid crystal display 11, a plurality of buttons 12 and a colorimetric cell cover 13 are arranged on the upper surface of the casing 1, and on the right side behind the casing 1 A power control switch, a power socket and an RS-232 interface (not shown in the figure) are arranged in sequence below.

[0035] A transmissive colorimetric cell 3 and a reflective colorimetric cell 2 are arranged side by side under the colorimetric cell cover 13 of the casing 1 .

[0036] like image 3 As shown, wherein the transmission type colorimetric cell 3 is a cuboid, one end of the side of the transmission type colorimetr...

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Abstract

The invention discloses a quick detector for quality and safety of tea. The detector is provided with a machine shell of which the upper surface is provided with a color comparison cuvette cover. Thedetector is characterized in that: a transmission type color comparison cuvette and a reflection type color comparison cuvette are arranged side by side under the color comparison cuvette cover of themachine shell; the transmission type color comparison cuvette is a rectangular tank body, one side surface of the tank body is provided with a light source/monochromator, and the other opposite sidesurface is provided with a photoelectric detector; and the reflection type color comparison cuvette is a cuboid of which the inside is provided with three T-shaped channel holes, channel openings of two side channel holes are provided with a light source/monochromator respectively, the lower part channel opening of the middle channel hole is provided with a photoelectric detector, and the lower part channel opening of the middle channel hole is provided with a chromatographic plate. The detector can be used for quickly and quantitatively detecting the contents of heavy metal and pesticide in tea in field and quickly detect the quality safety of tea in field.

Description

technical field [0001] The invention relates to a simple, sensitive and rapid on-site rapid detection instrument for tea quality safety, in particular to a rapid on-site rapid quantitative detection of heavy metal and pesticide content in tea. Background technique [0002] my country is the origin of tea trees, and tea trees first appeared in the Yunnan-Guizhou Plateau and Xishuangbanna area in southwest my country. The main varieties of tea are green tea, black tea, oolong tea, scented tea, white tea and yellow tea. Tea has the medicinal effect of keeping fit and curing diseases, and it is also full of appreciation, which can cultivate sentiment. Taking tea as a drink has changed people's bad habit of drinking raw water and greatly improved people's health. [0003] After modern scientific separation and identification, tea contains more than 450 kinds of organic chemical components and more than 40 kinds of inorganic mineral elements. The organic chemical components and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25G01N21/03
Inventor 于爱民王振德
Owner CHANGCHUN JILIN UNIV LITTLE SWAN INSTR
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