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Method for measuring water body total nitrogen and total phosphorous by digestion spectrophotometry of supersonic wave cooperating with ozone

An ultrasonic and photometric technology, applied in the field of environmental chemical monitoring, can solve the problems of inability to detect in real time on site, long analysis duration, complicated analysis process, etc., to solve the problem of low oxidation and digestion efficiency, large consumption of changing reagents, and solve the problem of secondary The effect of secondary pollution

Inactive Publication Date: 2008-01-16
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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Problems solved by technology

[0004] The present invention provides a method for measuring total nitrogen and total phosphorus in water body by ultrasonic cooperative ozone digestion photometry, which can solve the existing problems of inability to detect in real time on site, long analysis duration, complicated analysis process, harsh conditions and high energy consumption. especially secondary pollution

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  • Method for measuring water body total nitrogen and total phosphorous by digestion spectrophotometry of supersonic wave cooperating with ozone
  • Method for measuring water body total nitrogen and total phosphorous by digestion spectrophotometry of supersonic wave cooperating with ozone

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Embodiment Construction

[0036] The inventive method carries out according to the following steps:

[0037] (1) Utilize ozone generator 2 to produce the ozone solution of stable concentration, the concentration of ozone is 10mg / l,. Make the ozone solution flow through the ozone solution balance chamber 5 under the flow rate of 50ml / min by the peristaltic pump 9, the ozone solution dynamic balance tube 6 made of optical glass is housed in the ozone solution balance chamber, and the cooling circulating water 4 of the ozone solution balance chamber 5 has guaranteed the ozone Concentration stability.

[0038] (2) After the ozone solution flows through the ozone solution dynamic balance pipe 6, it mixes with the water sample 7 delivered by the peristaltic pump 8 immediately, and immediately enters the synergistic reaction chamber 12 after mixing, and the transducer of the ultrasonic generator is installed on the synergistic reaction chamber 12 tops 11. The head of the transducer 11 is inserted into the re...

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Abstract

The invention provides an ultrasonic wave and ozone coordinated luminosity counteraction method for measuring the total nitrogen and total phosphorus of water. The invention can solve the problem of the prior method that the real-time measuring can not be taken, the analyzing time is long, the analysis process is numerous and diverse, the measuring condition is harsh and the energy consumption is big, in particular that secondary pollution can be produced. Cavitations effect and ozone oxidation coordinated water sample counteraction method is adopted in the invention, the organic nitrogenous and inorganic nitrogen in the water sample are transformed into nitrate under the normal temperature and pressure, the phosphates of the water sample are transformed into normal phosphates; and lastly, the phosphates and the normal phosphates are measured by an ultraviolet visible light measuring system and the index of the total nitrogen and total phosphorus of water can be obtained.

Description

technical field [0001] The invention relates to the technical field of environmental chemical monitoring, in particular to a method for measuring total nitrogen and total phosphorus in a water body by means of ultrasonic and ozone digestion photometry. Background technique [0002] Nitrogen and phosphorus are one of the essential elements for the growth of organisms. However, if the total nitrogen and total phosphorus content in the water body is too high, it will cause a large number of organisms and microorganisms to multiply, resulting in eutrophication of the water body, especially near seas, lakes, and reservoirs. Therefore, total nitrogen And total phosphorus is one of the important indicators to measure water quality. At present, the analysis methods of total nitrogen and total phosphorus in water bodies are basically still in the stage of laboratory analysis. The commonly used methods for the determination of total nitrogen include potassium persulfate oxidation-ultr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/00G01N21/33G01N21/78G01N21/01G01N33/18G01N1/44
Inventor 王军成刘岩侯广利孙继昌徐珊珊杜立彬尤小华
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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