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Isotope based surface water pollution source analytical method

An analytical method and isotope technology, applied in the field of isotope-based surface water pollution source analysis and pollution source analysis, can solve problems such as the inability to meet the accuracy requirements of source analysis, and achieve the effect of shortening the test period, reducing the workload, and improving the accuracy

Inactive Publication Date: 2014-05-21
TIANJIN ACADEMY OF ENVIRONMENTAL SCI
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Problems solved by technology

Because pollutants in water are easily affected by temperature, light and other oxides in the process of migration, some of their chemical components undergo degradation and other changes, resulting in traditional source apportionment methods that cannot meet the accuracy requirements of source apportionment

Method used

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  • Isotope based surface water pollution source analytical method
  • Isotope based surface water pollution source analytical method
  • Isotope based surface water pollution source analytical method

Examples

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Embodiment Construction

[0032] In this embodiment, the Beitang sewage river in Tianjin is taken as the research area. The sewage river has a total length of 32.7 kilometers and a width of 30-45 meters. It is a municipal sewage river in Tianjin.

[0033] The invention provides an isotope-based analysis method for surface water pollution sources, which is characterized in that it is based on the different isotope compositions of hydrogen, oxygen, carbon, and nitrogen in substances under different environmental conditions, by analyzing multiple water samples taken from the detected sewage waters The composition ratio of dissolved hydrogen, oxygen, carbon, and nitrogen isotopes in the sample can obtain the pollution contribution rate, and discover and locate new pollution sources. Specific steps are as follows:

[0034] 1). Sampling,

[0035] 1.1). First determine the characteristic points of the sewage river, and lay out the sampling section at the characteristic points. The characteristic points inclu...

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Abstract

The invention relates to an isotope based surface water pollution source analytical method, which comprises the steps of: 1) sampling: laying sampling points and conducting sampling according to industry standards; 2) isotope detection: taking isotopes of hydrogen, oxygen, carbon and nitrogen, namely D, <18>O, <13>C, and <15>N as the indexes; employing an isotope ratio mass spectrometer to detect the ratios of isotopes of hydrogen, oxygen, carbon and nitrogen, namely D, <18>O, <13>C, and <15>N in samples, and conducting comparison with international standard substances, and working out isotope ratios of the samples; and 3) data analysis: drawing a hydrogen and oxygen isotope ratio diagram according to the ratios of isotopes of hydrogen and oxygen, namely D and <18>O in source and convergence samples; selecting analysis nodes, calculating a pollution source contribution rate through a source convergence isotope ratio of the nodes, and determining a new pollution source by judging whether the source convergence isotope ratio of outflow nodes is balanced, and then making use of analysis of the isotopes of carbon and nitrogen, namely <13>C and <15>N to verify the accuracy of the result. The method provided by the invention has the advantages of improving the accuracy and efficiency.

Description

technical field [0001] The invention relates to a method for analyzing pollution sources in the field of environmental pollution prevention and control, in particular to an isotope-based analysis method for surface water pollution sources. Background technique [0002] With the acceleration of urbanization and industrialization, the generation and discharge of urban wastewater and industrial sewage are increasing, and the environmental pollution of surface water is becoming more and more serious. In this regard, the state and local governments have formulated a series of regulations and standards to control the discharge of waste (sewage) water, and through detection and analysis of surface water pollution components to obtain the pollution contribution rate of pollution sources, and to discover and locate new pollution sources. [0003] At present, there are few studies on the source analysis of surface water environmental pollution. Conventional methods and models mainly i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62
Inventor 袁雪竹卢学强邓小文马建立焦永杰陈红张良运张晓惠
Owner TIANJIN ACADEMY OF ENVIRONMENTAL SCI
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