Portable pesticide residue rapid tester with temperature control function

Abstract

The invention relates to a portable pesticide residue rapid tester with a temperature control function. The tester comprises a shell, a display, a measuring chamber, a hinged plate, a spectrophotometer, a light emitting diode and several keys. A temperature control mechanism is arranged below the shell. A placing mechanism is arranged in the measuring chamber. The temperature control mechanism comprises a connecting chamber, a heat conduction plate, a heater, an exhaust pipe and an exhaust component. The exhaust component comprises a piston, a fixing plate and a spring. The placing mechanism comprises a motor, a screw rod, a sleeve, an object placement plate, a limiting component, a first hub, a conveying belt, a supporting shaft, a second hub and a cleaning block. By using the portable pesticide residue rapid tester with the temperature control function, a working temperature of the pesticide residue rapid tester is adjusted through the temperature control mechanism, an influence of an external environment temperature on work of the pesticide residue rapid tester is reduced, in addition, a cuvette is stably placed into the measuring chamber through the placing mechanism, and simultaneously, a bottom in the measuring chamber is cleaned, a spectrophotometer can conveniently recognize and measure a sample, and practicability is improved.

Description

technical field [0001] The invention relates to the field of food testing equipment, in particular to a convenient pesticide residue rapid testing instrument with a temperature control function. Background technique [0002] Under certain conditions, organophosphorus and carbamate pesticides can inhibit the normal function of cholinesterase, and the inhibition rate is positively correlated with the concentration of the pesticide. Under normal circumstances, the enzyme catalyzes the hydrolysis of the neurotransmitter metabolite (acetylcholine), and the hydrolyzed product reacts with the chromogenic agent to produce a yellow substance. Use a spectrophotometer to measure the change value of the absorbance at 412nm with time, and calculate the inhibition rate. Through the inhibition rate It can be judged whether the sample contains organic phosphorus or carbamate pesticide residues. The Pesticide Residue Rapid Tester is developed based on the principle of enzyme inhibition and ...

AI Technical Summary

Problems solved by technology

[0003] When the existing pesticide residue rapid detector is working, the temperature needs to be controlled within 5°C to 35°C. Since the ambient temperature cannot be adjusted, too high or too low outside temperature may affect the work of the pesticide residue rapid detector. Not only that, When the user puts the cuvette into the measurement chamber, once the cuvette is tilted, the sample may flow directly into the measurement chamber, which may cause damage to the instrument due to the corrosiveness of the sample itself, and because the measurement chamber is set in the pesticide In the residue speed tester, it is very inconvenient to clean, which reduces the practicality

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