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Water-quality total phosphar quick-detecting method and apparatus

A rapid measurement and water quality technology, which is applied in the preparation of test samples, measurement of color/spectral characteristics, and analysis through chemical reactions of materials, etc., which can solve the problems of large errors in measurement data and cumbersome processes.

Inactive Publication Date: 2006-08-09
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It takes about 40 to 60 minutes to measure the content of total phosphorus in water by this method. The process is cumbersome, and it is completely manual operation, so the error of the measurement data is relatively large.

Method used

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  • Water-quality total phosphar quick-detecting method and apparatus
  • Water-quality total phosphar quick-detecting method and apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Typical example:

[0018] Attached figure 1 The measurement procedure shown.

[0019] After the tested water sample, sulfuric acid and potassium persulfate are pumped into the mixing cup through a peristaltic pump and mixed, then pumped continuously and at a low speed into the digester through the water sample inlet (1) at a flow rate of 15-30mL / min.

[0020] Simultaneously, through the heating wire (7) and the temperature sensor (8), the temperature in the quartz digestion tube (6) is controlled by a thermostat to maintain at about 500°C.

[0021] When the water sample to be tested passes through the digester continuously and at low speed, it is quickly digested and condensed under critical conditions, and the digested water sample obtained at the water sample outlet (2) enters the constant temperature detector to determine the content of phosphorus.

[0022] The main parameters of the digester used in this example are as follows:

[0023] Digester shell (10) height...

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Abstract

A water quality total phosphorus rapid test method adopts potassium persulfate slaking method. It features reducing water sample speed and continuously pumping in one slaker with constant heat and condensing unit to complete water sample fast slaking. Said slaker consists of water sample passageway, condensated water passageway, condensing chamber, quartz slaking pipe, heating wire, temperature sensor, prop and slaker shell. Compared with pressure cooking kettle slaking method, said invention has raised slaking speed and efficiency, reducing sample material damage.

Description

1. Technical field [0001] The invention belongs to the technical field of physical and chemical measurement and testing equipment in the environmental monitoring and water treatment industries. 2. Background technology [0002] The content of total phosphorus in rivers, rivers, lakes, seas, domestic wastewater, industrial wastewater and other water bodies has a very important impact on the species and quantity of various organisms living in the water body. [0003] Industrial circulating cooling water usually also uses phosphorus-based chemicals as the main water treatment chemicals, and its composition mainly includes orthophosphate, polyphosphate, organic phosphate and other substances. to the quality of water treatment. [0004] According to the recommended method of the national standard "Determination of Total Phosphorus in Water Quality by Ammonium Molybdate Spectrophotometry (GB 11893-89)", potassium persulfate (or nitric acid-perchloric acid) is generally used as th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N21/78G01N21/25
Inventor 卞永荣蒋新余贵芬王芳
Owner INST OF SOIL SCI CHINESE ACAD OF SCI