On-line high-spectrum monitoring instrument for water trace element

Abstract

The invention discloses an on-line high spectromonitor for trace elements in a water body, which comprises a water body extraction device, an automatic sampling device (6), a long optical path liquid core sample cell (3), a light source (4), an optical fiber spectrometer (2), an automatic sampling control unit (5), and a monitoring main control unit (1), wherein the water body extraction device is used for extracting sample solutions from the water body; the automatic sampling device (6) is used for automatically extracting the sample solutions from the water body extraction device and performing a mixing reaction to form a solution to be tested; the long optical path liquid core sample cell (3) is used for receiving the solution to be tested from the automatic sampling device (6); the light source (4) transmits output light into a sample cell through a light inlet placed on the long optical path liquid core sample cell (3); the optical fiber spectrometer (2) receives an optical signal transmitted by a light outlet of the long-path liquid core sample cell (3) and acquires and processes the optical signal; the automatic sampling control unit (5) is used for controlling the action of extracting and mixing the sample solutions of the automatic sampling device (6); and the monitoring main control unit (1) is used for coordinating the work process between the automatic sampling device (6) and the optical fiber spectrometer (2), and storing and processing an acquisition result of the optical fiber spectrometer (2). The on-line high spectromonitor can effectively reduce material consumption and labor, and improve the reliability and accuracy of the analysis.

Description

technical field [0001] The invention relates to an online hyperspectral monitor for trace elements, in particular to a high-sensitivity and high-precision hyperspectral monitor for Fe elements with low concentration and wide dynamic range in water bodies. Background technique [0002] Trace elements Fe, Mn, Cu, Zn, Mo, Co, B, etc. in seawater are closely related to the life process of organisms and are called "trace nutrients". Among them, Fe is one of the main factors that control and affect the growth of phytoplankton. Moderate Fe element will promote the growth of organisms and microorganisms. If the content is insufficient, the growth of phytoplankton will be restricted and the primary productivity of the ocean will be affected. If the content is too high, it will easily cause eutrophication. It may further lead to the occurrence of red tides, which will cause great harm to the marine ecological environment, biological resources and marine fishery industry. The monitori...

AI Technical Summary

Problems solved by technology

[0003] The traditional monitoring of trace elements such as Fe needs to go to the site to collect samples from the survey ship and then analyze them in the on-board laboratory or shore laboratory. The measurement methods usually use spectrophotometry, atomic absorption spectrophotometry, X-ray fluorescence spectrometry, ICP Emission spectrometry, anodic stripping voltammetry and neutron activation analysis, the sample consumption is large, the analysis period is long, and the sample may be contaminated or chemically changed during transfer and storage

However, quantitative research on trace components in seawater places special emphasis on preventing sample contamination, and usually requires a clean sampling device, which increases the cost and complicates the operation.

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