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Method of evaluating soil pollutant to human body effectiveness through multi path artificial analogue stomach intestine system

A technology of artificial simulation and gastrointestinal system, which is applied in the field of establishment of experimental systems and methods, and can solve problems such as long experimental periods and high experimental costs

Inactive Publication Date: 2006-01-11
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology

The results of traditional animal oral toxicity tests are generally considered to be quite reliable, but the application of this method is limited by its relatively long test period and high test cost

Method used

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  • Method of evaluating soil pollutant to human body effectiveness through multi path artificial analogue stomach intestine system

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Embodiment

[0035] Collect surface layer 0~5cm lead-contaminated soil near the residential area of ​​Xiaokou Town, Fuyang City, Anhui Province, air-dry it, and pass through a 0.25mm sieve. 2 o 5 ) is 0.13%, and the available phosphorus content is 26.7mg kg -1 , with a total lead content of 10000mg kg -1 . Add 10000mg kg to the soil -1 Hydroxyapatite, in order to achieve the effectiveness of reducing the oral intake of lead in the soil, the soil continued to be stable for 5 months (deionized water was added every week to maintain the moisture content of 20%).

[0036] The lead-contaminated soil that does not add hydroxyapatite and adds hydroxyapatite takes by weighing 6 grams respectively, adds 600 milliliters of artificial simulated digestive juices proposed by the present invention (prepared by the average value of each concentration range given above), Using the multi-channel artificial gastrointestinal simulation system designed by the present invention, after 1 hour of gastric pha...

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Abstract

The present invention includes the following steps: 1. creating multichannel artificial simulated gastrointestinal system; 2. collecting and processing soil sample; 3. preparing artificial digestive juice; 4. adding the soil sample and artificial digestive juice into the multichannel artificial simulated gastrointestinal system; 5. under a certain reaction condition, after a certain time collecting a certain quantity of water sample from reaction container of system artificial gastrointestinal reactor; and 6. filtering and determining dissolved heavy metal pollutant content in the water sample. The invented method can be used for evaluating effectiveness of soil pollution to human body health risk.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to human health risk assessment of soil pollution, in particular to the establishment of an experimental system and method for soil pollution risk assessment. Background technique [0002] Most of the existing studies on soil heavy metal pollution focus on the soil-plant system, and study the total amount of heavy metals entering the human body through the food chain. There is no doubt that the food chain is a very important source of heavy metals entering the human body. In our country, people have fully realized that the heavy metals contained in crops or agricultural products grown on polluted soil are too high, which may cause harm to human health. Through various remediation measures of polluted land, including physical (such as alien soil, etc.), chemical (addition of soil additives and passivators, etc.) and biological methods (such as plant extraction, etc.), ...

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Application Information

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IPC IPC(8): G01N33/00G01N33/24G01N1/04G01N21/31
Inventor 朱永官唐翔宇
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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