Urinary iodine tester and analysis method thereof

Abstract

The invention discloses an analysis method of a urinary iodine which uses a urinary iodine tester. The urinary iodine tester comprises a main body, wherein the main body is internally provided with a light resource room, a monochromator, a beam splitting room, a sample room and a photoelectricity conversion element; the light resource room is internally provided with a light source and a spotlighting retroreflector; the monochromator is positioned on a light path of the beam of the light resource reflected by the spotlighting retroreflector; the transmitted light path of the monochromator is provided with the beam splitting room for splitting monochromatic light transmitted from the monochromator into two beams of the monochromatic light; and the light paths of a reference cell and a sample cell transmitted from the two beams of the monochromatic light are all provided with the photoelectricity conversion element. The invention provides the novel tester for fast, simply and exactly testing the urinary iodine based on a catalysis power curve and the analysis method thereof. The tester does not need to control the test temperature (the national standard WS/T 107-2006 needs stable temperature environment, and the fluctuation of the temperature is less than 0.3 DEG C), does not need to strictly control the time (the national standard WS/T 107-2006 needs to exactly add the solution into each pipe every 30 seconds, and needs to lead the absorbance to be 0.15-0.20 and the interval to be 30 seconds colorimetry), can display the test result of the urinary iodine within 2min (the national standard WS/T 107-2006 needs 45min), and has the quantitative range which is obviously wider than the existing national standard).

Description

technical field [0001] The invention relates to a urine iodine analysis method. Background technique [0002] Iodine is one of the trace elements with important biological effects, and is closely related to the growth, development and metabolism of the human body. On the one hand, iodine deficiency is an important cause of temporary hypothyroidism (hypothyroidism), which can lead to mental retardation and growth retardation in severe cases. The iodine nutrition level of pregnant women directly affects the intelligence and physical development of fetuses and infants. Iodine is one of the causes of birth defects in newborns - mental retardation and other diseases. On the other hand, clinical studies have proved that excessive iodine can easily cause diseases such as hyperiodine goiter or myxedema. It is particularly important to accurately evaluate the degree of iodine deficiency in the population and timely monitor the iodine nutritional status of the population after iodin...

AI Technical Summary

Problems solved by technology

The urine iodine determination method recommended by WHO, UNICEF and ICCIDD international triad organization and the national standard method in my country are both arsenic-cerium catalytic spectrophotometric methods based on arsenic-cerium catalytic kinetic reaction. The fixed time method requires a stopwatch for timing, and the time point of contrasting colors is difficult to grasp accurately and the linear range is narrow

Other methods also have disadvantages such as poor stability, expensive equipment and complicated operation.

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