Method for measuring heavy metal in sea water by ion color spectrum flow injection chemiluminescence restraint method

A flow injection and chemiluminescence technology, applied in the field of environmental chemical monitoring, can solve the problems of long analysis duration, inability to work on site, complicated analysis process, etc., and achieve the effect of high sensitivity and fast analysis speed.

Inactive Publication Date: 2011-07-13
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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Problems solved by technology

[0004] The invention provides a method for measuring heavy metals in seawater by ion chromatographic flow injection chemiluminescence suppression method, which can solve the existing problems of inability to work on site, long analysis duration, complicated analysis process, harsh conditions and high energy consumption, especially Secondary pollution and other issues

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  • Method for measuring heavy metal in sea water by ion color spectrum flow injection chemiluminescence restraint method
  • Method for measuring heavy metal in sea water by ion color spectrum flow injection chemiluminescence restraint method
  • Method for measuring heavy metal in sea water by ion color spectrum flow injection chemiluminescence restraint method

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Embodiment Construction

[0034] The inventive method comprises the following steps:

[0035] (1). Utilize the electrolytic type ozone generator 2 to produce the ozone solution of stable concentration, make the ozone solution flow through the ozone solution balance chamber 7 by the pump 8, the ozone solution dynamic balance tube 6 made of optical glass is housed in the ozone solution balance chamber 7, in An ultraviolet lamp 5 is arranged on its side. When the ozone solution flows through the dynamic balance tube 6, the ozone solution is irradiated by the ultraviolet lamp 5 and partially decomposed to generate hydroxyl radicals. The hydroxyl radicals and ozone can be used as an oxidant to oxidize the luminescent reagent 9 together.

[0036] (2). After the ozone solution flows through the dynamic balance tube 6 of the ozone solution, it is mixed with the luminescent reagent-rhodamine B9 as the carrier.

[0037] (3). The sample peristaltic pump 14 transports the sample 13 to the quantitative tube of the ...

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Abstract

The invention provides a method for measuring heavy metal in seawater by using an ion chromatography flow injection chemical luminescence suppression method; the method is based on that the heavy metal elements in seawater have obvious suppression effect on ozone oxidation rhodamine B chemical luminescence system, at the same time the difference of suppression level of the chemical luminescence intensity and the concentration of the heavy metal elements in seawater have linear relation, and a method for using an ion chromatography flow injection chemical luminescence suppression method to measure heavy metal in seawater is established by using the ion chromatography separation flow injection technology; the method used for measuring the heavy metal in seawater has the advantages of on spot, fastness, simplicity and sensitivity.

Description

technical field [0001] The invention relates to the technical field of environmental chemical monitoring, in particular to a method for measuring heavy metals in seawater. Background technique [0002] Heavy metals such as copper, lead, zinc, chromium, cadmium, mercury and arsenic in seawater are a very important problem facing marine environmental pollution in recent years. In order to scientifically evaluate and control the pollution degree of heavy metal elements in seawater, it is necessary to analyze the content, valence and form of heavy metals in seawater. At present, the methods for determining trace heavy metals in seawater mainly include: color spectrophotometry, atomic absorption spectrometry, atomic emission spectrometry, ICP-MS and electrochemical analysis. The method lasts for a long time, the analysis process is complicated, the conditions are harsh, the reagent consumption is large, and some require the use of toxic organic extractants and color reagents, re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/96
Inventor 刘岩王军成杜立彬高杨徐珊珊张颖颖张颖任国兴石小梅尤小华孙继昌侯广利
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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