Frame sampling and analysis method for urban impervious surface ground deposition pollutants
A pollutant and framework technology, applied in the fields of analysis materials, sampling, sampling devices, etc., can solve the problems of lack of standardized sampling methods for impervious surface pollutants, complex pollution sources, and difficulty quantifying the degree of pollution, so as to ensure the feasibility, Simple to operate and create simple effects
Inactive Publication Date: 2016-05-04
BEIJING UNIV OF TECH
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Problems solved by technology
The latter has temporal and spatial differences, and at the same time, the sources of pollution are complex, and the degree of pollution is difficult to quantify
[0004] The cumulative total amount of pollutants deposited on urban impervious surfaces before rainfall represents the pollution degree of urban impervious surfaces before rainfall. At present, there is a lack of detailed research on it. The reason is that there is currently no standardized sampling of urban impervious surface pollutants. method
In order to solve the sampling method of urban impermeable surface pollutants that has not yet been standardized, the present invention proposes a simple, feasible and accurate frame sampling method, which provides reference for subsequent formulation of relevant technical specifications
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[0017] Referring to the drawings, the present invention includes a brush and frame sampler. In order to facilitate the sweeping of the surface pollutants at the corners of the frame sampler, the bristle brush is selected as a brush with a width of 2cm, and the number of the brushes depends on the number of different sampling points. The frame sampler is composed of 4 wooden strips with a length of 11cm, a width of 1cm, and a thickness of 0.5cm to form a square. Its inner surface area is 10cm*10cm, and it must be firm and not deformed. When the collected pollutants are less than or equal to 10g / m 2 When, the frame sampler can be used to take multiple samples near the selected sampling point, each time sampling at a different location, until the total amount of pollutants collected is greater than 10g / m 2 until.
[0018] The sampling steps are: press and fix the frame sampler on the selected urban impermeable ground (building roof, traffic road, square)—use a brush to sweep th...
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Abstract
Belonging to the crossing field of municipal engineering technology and environmental engineering technology, the invention provides a sampling and analysis method for urban impervious surface ground deposition pollutants. The accumulated total amount of urban impervious surface ground deposition pollutants before rainfall represents the pollution degree of urban impervious surface before rainfall, and detailed study on the urban impervious surface pollution degree is insufficient. The method consists of: pressing and fixing a frame sampler to a selected urban impervious ground surface, employing a hair brush to sweep and take pollutants within the frame sampler, especially sweeping the corners of the frame sampler thoroughly; repeating sweeping taking more than 5 times; collecting the pollutants, and making labels for standby use; changing hair brushes at different sampling points to prevent secondary pollution caused by the hair brushes; and at the end of all sampling, making labels and sending the samples to a laboratory. The method provided by the invention can accurately collect the pollutants accumulated on the urban impervious surface before rainfall, and the collected pollutants can reflect the pollution degree of urban impervious surface through analysis. The method provided by the invention is easy to operate, and ensures the implementation feasibility.
Description
technical field [0001] The invention relates to a method for sampling and analyzing pollutants deposited on urban impermeable surfaces, and belongs to the interdisciplinary field of municipal engineering technology and environmental engineering technology. Background technique [0002] With the rapid development of social economy, industrial point sources and domestic sewage have been fully controlled, but it is found that a single rainfall in the city can also bring a huge pollution load to the receiving water body: normal rivers have exceeded the water quality, and the water in the water body The level of nitrogen and phosphorus has risen sharply, etc., and the traditional urban water environment governance system established with sewage pipe network and treatment plant as the core facilities has limited ability to deal with it. Experts and scholars have deeply realized that it is necessary to take targeted measures to control urban rainfall runoff pollution, and some citi...
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IPC IPC(8): G01N1/02
CPCG01N1/02G01N2001/028
Inventor 周玉文王中正张静赵树旗杨伟明高琳卢兴超吴献平娄富豪刘原
Owner BEIJING UNIV OF TECH