Method and device for quickly oxidizing ammonia nitrogen

An oxidation device, ammonia nitrogen technology, applied in the field of analytical instruments, can solve the problems of no ammonia nitrogen oxidation device, cumbersome operation steps, long time consumption, etc., and achieve the effect of simple structure, flexible operation, fast and convenient operation

Active Publication Date: 2015-02-04
上海北裕分析仪器股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems that the existing ammonia nitrogen oxidation method takes a long time, the operation steps are cumbersome, and there is no special ammonia nitrogen oxidation device, the purpose of the present invention is to provide a quick and convenient ammonia nitrogen oxidation method and its device

Method used

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  • Method and device for quickly oxidizing ammonia nitrogen
  • Method and device for quickly oxidizing ammonia nitrogen
  • Method and device for quickly oxidizing ammonia nitrogen

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Embodiment 1

[0031] Embodiment 1: The steps of the ammonia nitrogen rapid oxidation method of the present embodiment are as follows:

[0032] a. Preheat the ammonia nitrogen water sample, after preheating, the solution temperature ranges from 18°C ​​to 100°C;

[0033] b. Quickly add hypobromite oxidant to the ammonia nitrogen water sample preheated in step a, and immediately oxidize the ammonia nitrogen in the water sample to nitrite nitrogen.

[0034] Ammonia nitrogen refers to the free ammonia (NH 3 ) and ammonium ions (NH 4 ) in the form of nitrogen. In the oxidation method of this embodiment, after the ammonia nitrogen water sample is heated to a certain temperature, the hypobromite can complete the oxidation of ammonia nitrogen almost instantly, which is reduced from the 20min required in the standard to almost instantaneously, thereby saving ammonia nitrogen oxidation. time.

[0035] Preferably, the ammonia nitrogen preheating temperature is 60°C to 70°C. After a large number of ...

Embodiment 2

[0040] Embodiment 2: Combination figure 1 Illustrate the ammonia nitrogen oxidation device of this embodiment, which includes an ammonia nitrogen solution delivery branch pipe 101, an oxidant delivery branch pipe 102, a delivery main pipe 103 communicated with the ammonia nitrogen solution delivery branch pipe 101 and the oxidant delivery branch pipe 102, for outputting nitrite nitrogen The reactant, the heater 104 is arranged on the ammonia nitrogen solution delivery branch pipe 101 for preheating the ammonia nitrogen solution. When the ammonia nitrogen solution is heated by the heater 104 in the ammonia nitrogen solution delivery branch pipe 101, the heated ammonia nitrogen solution is mixed with the hypobromite solution in the oxidant delivery branch pipe 102 in the delivery main pipe 103, and the oxidation reaction occurs rapidly to generate hypobromite. Nitrate nitrogen, complete the oxidation of ammonia nitrogen solution. The heater 104 in this embodiment is a water bat...

Embodiment 3

[0041] Example Three: Combining figure 2 The ammonia nitrogen oxidation device of the present embodiment is described, which includes an ammonia nitrogen solution delivery branch pipe 105, an oxidant delivery branch pipe 106, a water bath / oil bath heater 107 communicated with the ammonia nitrogen solution delivery branch pipe 105 and the oxidant delivery branch pipe 106 respectively. The output end of the ammonia nitrogen solution delivery branch pipe 105 is located in the reaction bottle 108 , and the output end of the oxidant delivery branch pipe 106 is located in the reaction bottle 108 . The bottom of the water bath / oil bath heater 107 is equipped with an electric heating tube, and the upper part is equipped with a temperature sensor. The electric heating tube and the temperature sensor are respectively connected to the automatic temperature controller installed outside the water bath / oil bath heater 107 for automatic control. Heating temperature for water bath or oil bat...

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Abstract

The invention discloses a method and a device for quickly oxidizing ammonia nitrogen and relates to the technical field of analytical instruments. The invention aims at the problems that the conventional ammonia nitrogen oxidation method is time-consuming and complex in operation steps and does not have special ammonia nitrogen oxidation device. The method comprises the following steps: a, preheating ammonia nitrogen solution; and b, adding oxidant and oxidizing the ammonia nitrogen into nitrite nitrogen. The device comprises an ammonia nitrogen solution conveying branch pipe, an oxidant conveying branch pipe and a container, wherein the container is communicated with the ammonia nitrogen solution conveying branch pipe and the oxidant conveying branch pipe respectively and is used for outputting nitrite nitrogen reactant; and a heater is arranged at the output end of the ammonia nitrogen solution conveying branch pipe and is used for preheating the ammonia nitrogen solution. The method and the device is particularly suitable for measuring the ammonia nitrogen content by gas phase molecular spectroscopy and performing oxidation pretreatment on the ammonia nitrogen in the solution.

Description

technical field [0001] The invention relates to the technical field of analytical instruments, in particular to a method for rapid oxidation of ammonia nitrogen and a device thereof. Background technique [0002] Gas-phase molecular absorption spectrometry (hereinafter referred to as GPMAS) is based on the principle that the relationship between the light absorption intensity of the gas decomposed into the measured component and the concentration of the measured component complies with the principle of Beer’s law. , can also determine the measured components for qualitative analysis. The gas-phase molecular absorption spectrometer is based on the principle of GPMAS. It converts the components to be measured in the liquid phase sample into gases through chemical reactions, so that the gas is separated from the liquid phase samples and loaded into the measurement system to measure the content of the gas. A device for measuring the concentration of an ingredient. It is mainly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N31/00G01N21/31
Inventor 陈凡卢文武茅闻婧李明徐君宇
Owner 上海北裕分析仪器股份有限公司
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