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A method for risk assessment of petroleum hydrocarbons in soil and groundwater of industrially polluted sites

A technology for risk assessment and petroleum hydrocarbons, applied in the field of environmental risk assessment, can solve the problems of large differences in the types and compositions of petroleum hydrocarbon pollutants, quantitatively reflect the degree of health risk of soil pollution, migration, degradation, transformation and differences in toxicological characteristics, etc. , to achieve accurate risk assessment results, avoid health risks, and speed up land transfer

Active Publication Date: 2022-08-09
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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  • Abstract
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  • Claims
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Problems solved by technology

However, petroleum hydrocarbons are a complex mixture. According to the production and discharge characteristics of different sites, the types and compositions of petroleum hydrocarbon pollutants vary greatly, and there are great differences in migration, degradation, transformation and toxicological characteristics.
In soil environmental pollution investigation and risk assessment, only soil petroleum hydrocarbons (C 6 -C 9 ) and petroleum hydrocarbons (C 10 -C 40 ) content is difficult to accurately assess its environmental toxicity, and it is difficult to scientifically and quantitatively reflect the degree of health risk of soil pollution
On the other hand, there is currently no risk assessment method for such pollutants in groundwater

Method used

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  • A method for risk assessment of petroleum hydrocarbons in soil and groundwater of industrially polluted sites
  • A method for risk assessment of petroleum hydrocarbons in soil and groundwater of industrially polluted sites
  • A method for risk assessment of petroleum hydrocarbons in soil and groundwater of industrially polluted sites

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Experimental program
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Effect test

Embodiment

[0134] For the suspected contaminated plots in the control example, in order to determine the composition of petroleum hydrocarbons and the content of components with different carbon chain lengths, the samples were firstly scanned by GC-MS detection combined with the automatic mass spectrum deconvolution and identification system (AMDIS). , to identify the composition of petroleum hydrocarbon compounds in site soil and groundwater samples; (C 10 -C 40 ) Determination of Gas Chromatography (HJ894-2017) After analyzing soil and water samples, the petroleum hydrocarbons with different carbon chain length ranges were respectively integrated and quantitatively calculated to obtain the content of petroleum hydrocarbons with different carbon chain lengths.

[0135] According to the preliminary investigation and detailed investigation results of soil contamination status of the plot site, most of the soil and groundwater samples in the plot do not have excessive screening value phen...

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Abstract

The present invention provides a method of risk evaluation of soil and groundwater in industrial pollution sites, including steps as follows: Step 1. Step 1. Make soil and groundwater samples for suspected pollution plots;Analyze the composition and reference content of petroleum hydrocarbons in the sample; step 3. According to the use of suspected pollution plots, determine the exposure of the main use of the suspected pollution plot and the contact of the crowd in contact with the crowd.The process of migration and entering the sensitive body; step 4. The toxic assessment based on the type of petroleum hydrocarbons; step 5. Calculate the non -carcinogenic hazard merchants of petroleum hydrocarbons according to the test data of petroleum hydrocarbons, and conduct risk characterization to judge risksIs it acceptable.By analyzing the composition and content of petroleum hydrocarbons, the invention has accurate governance and repair scope, accurate pollutant types, reduced economic input, and reduced environmental management costs.

Description

technical field [0001] The invention belongs to the technical field of environmental risk assessment, and in particular relates to a health risk assessment method for petroleum hydrocarbons in soil and groundwater of industrial polluted sites. Background technique [0002] Petroleum is mainly composed of inorganic elements such as carbon, hydrogen, sulfur, nitrogen, and oxygen. ) complex mixture. Hydrocarbons are an important component, and may also contain highly toxic and volatile benzene series, which have high photochemical reactivity, and are resistant to photooxidants in the atmosphere (such as ozone and peroxyacetyl nitrate, etc.) The formation of secondary organic aerosols plays a considerable role. However, petroleum hydrocarbons are a kind of complex mixture. According to the production and discharge characteristics of different sites, the types and compositions of petroleum hydrocarbon pollutants are quite different, and there are great differences in migration,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/08B09C1/10B09C1/00G01N33/24
CPCB09C1/08B09C1/10B09C1/002G01N33/241B09C2101/00
Inventor 吴文成吴颖欣周静妍宋清梅吴嘉慧刘谞承周玲莉吴灼浩
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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