An in-situ analyzer for nutritive salt and a nutritive salt content analyzing method

Abstract

An in-situ analyzer for nutritive salt and a nutritive salt content analyzing method are disclosed. The analyzer includes a microprocessor, drive components, a multi-ported valve, an injector, a colorimetric detector, a mixing ring, a sample pipeline, a pure water bin, a standard solution bin and various agent bins. The injector, the colorimetric detector, the mixing ring, the sample pipeline, thepure water bin, the standard solution bin and various agent bins are correspondingly connected to ports of the multi-ported valve. The microprocessor is connected to a first motor driver and a firstmotor in order and is then connected to an injection pump of the injector. The microprocessor is connected to a second motor driver and a second motor in order, is then connected to the multi-ported valve, and controls a multi-ported valve port connected to the injector and other ports in the multi-ported valve to be communicated in order. The colorimetric detector is connected to the microprocessor. The analyzer can achieve continuous automatic sampling and nutritive salt content analysis, can achieve on-line analysis of a plurality of components, and has advantage of a simple structure, powerful functions, high applicability and high reliability.

Description

technical field [0001] The invention relates to a water quality analyzer, in particular to a nutrient salt in-situ analyzer and a method for analyzing nutrient salt content. Background technique [0002] Nutrients are the material basis necessary for the growth of marine phytoplankton. The different concentrations and compositions of nutrients in seawater affect the primary productivity of the ocean and regulate the community structure of phytoplankton, thereby affecting the structure of the marine ecosystem. In normal seawater, proper amount of nutrient salt can promote the reproduction and growth of organisms, but excessive nutrient salt can promote the rapid reproduction of some marine organisms, thereby consuming a large amount of dissolved oxygen in seawater, making the seawater hypoxic, causing fish , Shrimp, crab, and shellfish died in large numbers. Now the pollution of organic matter and nutrient salts to the ocean is called "eutrophication". Understanding the te...

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Problems solved by technology

This traditional laboratory analysis and measurement method has the following defects: poor representativeness of sampled samples, susceptibility to contamination during sample collection and pretreatment, loss and variation of nutrients during sample storage and transportation, etc. Continuous Monitoring and Increasingly Urgent Needs for Disaster Reduction, Prevention and Scientific Research

[0005] In order to develop the on-site monitoring technology of seawater nutrients, my country Institute of Ocean Technology has carried out research on nutrient salt monitoring technology with the support of 863-818 funds. At present, a separate prototype of the on-site automatic analyzer for seawater nutrients has been developed. There are three stand-alone forms such as salt on-site automatic analyzer, nitrite on-site automatic analyzer and nitrate on-site automatic analyzer. However, there is no fully automatic seawater nutrient on-line analyzer that can analyze multiple components.

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