Probe type on-line monitoring system and probe type on-line monitoring method for water petroleum pollutants

A monitoring system and technology for pollutants, applied in material excitation analysis, fluorescence/phosphorescence, etc., can solve problems such as time-consuming and labor-intensive, and achieve the effects of low cost, good anti-interference and compact structure

Inactive Publication Date: 2013-01-09
YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

Chromatography can measure multiple components, but it is time-consuming and troublesome

Method used

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  • Probe type on-line monitoring system and probe type on-line monitoring method for water petroleum pollutants
  • Probe type on-line monitoring system and probe type on-line monitoring method for water petroleum pollutants
  • Probe type on-line monitoring system and probe type on-line monitoring method for water petroleum pollutants

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Embodiment Construction

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0039] Such as figure 1 As shown, it is a schematic structural view of the device of the embodiment of the present invention; it includes a cavity 1, and a transmitting unit built in the cavity 1, a receiving unit, and a control circuit board 7; wherein: the transmitting unit is an excitation light source 2 emitting ultraviolet light , through the quartz window 3 to irradiate into the water body or the flow cell 4, and the excitation light source 2 is an ultraviolet LED with a center wavelength of 365nm.

[0040] The excitation light source 2 is irradiated to the water body to be measured under the control of the control circuit board 7, and the petroleum pollutants in the water body emit fluorescent signals under the action of ultraviolet light;

[0041] The receiving unit includes a photodetector 6 and an optical filter 5 positioned in fron...

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Abstract

The invention relates to a probe type on-line monitoring system and a probe type on-line monitoring method for water petroleum pollutants. The system comprises an excitation light source, a detector and a control circuit board, wherein the excitation light source is used for emitting ultraviolet light which is emitted to the surface of water to be monitored at a certain angle; a light input end of the detector is provided with a light filter which is used for receiving fluorescent light reflected from the surface of the water to be monitored; and the control circuit board is connected with the detector and a control end of the excitation light source, is used for acquiring fluorescent light signals and temperature and calculating the concentration of the petroleum pollutants in the water, and is connected to an upper computer through a transmitting cable. The method comprises the following steps of: acquiring the fluorescence intensity of the surface of the water to be monitored through the excitation light source and the detector; and determining the concentration of the petroleum pollutants in the water to be detected according to the linear relation between the fluorescence intensity and the concentration of the petroleum pollutants in the water. A low-power-consumption ultraviolet light emitting diode (LED) is used as the excitation light source, the concentration is measured by the fluorescent characteristic of the petroleum pollutants, sensitivity and measurement speed are high, the steps are simple, and the system and the method can be used for monitoring petroleum pollutants in various water areas in an on-line manner.

Description

technical field [0001] The invention relates to the field of water body oil monitoring, in particular to a probe type online monitoring system and method for water body oil pollutants. Background technique [0002] Since entering the 21st century, with the rapid development of the national economy, the water quality of our country's rivers, lakes and marine environment has also suffered serious damage. Among them, petroleum and its products enter the water body environment during the process of mining, refining, storage, transportation and use, thus forming petroleum pollution in my country's offshore waters. Ways for oil products to enter the sea include: oily waste water from refineries is injected into the ocean through rivers or directly; oil spills, discharges or accidents from oil tankers cause oil products to enter the sea directly; oil spills and blowouts during the exploitation of subsea oil fields cause oil to enter ocean water bodies; Local natural oil spills on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
Inventor 冯巍巍陈令新赵广立付龙文孙西艳张文秀赵君才
Owner YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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