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In situ deposit-aqueous interface water-quality sampler and sampling method thereof

A water quality sampler and water quality sampling technology, applied in the direction of sampling devices, etc., to achieve the effect of convenient use and installation, convenient operation and strong operability

Inactive Publication Date: 2009-12-23
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to propose a kind of in-situ sediment-water interface water quality sampler and sampling method technical scheme thereof, this scheme provides a kind of sampler of in-situ sediment-water interface water quality sampling simultaneously, solves the traditional method to obtain The water quality samples at the sediment-water interface have great uncertainty. Nitrogen filling is used to replace the dissolved oxygen in the water quality sampling chamber, which improves the accuracy of sampling.

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  • In situ deposit-aqueous interface water-quality sampler and sampling method thereof
  • In situ deposit-aqueous interface water-quality sampler and sampling method thereof

Examples

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Effect test

Embodiment 1

[0024] Examples of in situ sediment-water interface water quality samplers, see figure 1 and figure 2 , the sampler includes two strip-shaped flat plates and a permeable membrane 2; one flat plate is a sampling plate 1, and the other plate is a protective plate 3, and the sampling plate and the protective plate clamp the permeable membrane and are fixed together by screws; the sampling The longitudinal sequence of the plate is divided into sediment interstitial water sampling section 2-1 and interface overlying water sampling section 2-2. Along the longitudinal direction of the sampling plate, a plurality of longitudinal intervals are arranged on the sediment interstitial water sampling section and the interface overlying water sampling section. The 3mm horizontal groove 2-3 is used as a water quality sampling chamber, the volume of the groove is between 2000 microliters and 4000 microliters, the permeable membrane covers the groove, and the protective plate is equipped with ...

Embodiment 2

[0029] The preferred embodiment of the in-situ sediment-water interface water quality sampler, referring to Example 1, is different from Example 1 in that the distance between the longitudinal groove and the groove is 2.5mm, and the volume of the groove is 3000 microns Lift.

Embodiment 3

[0031] In-situ sediment-water interface water quality sampler sampling method, get in-situ sediment-water interface water quality sampler, described sampler is the in-situ sediment-water interface water quality sampler described in embodiment 1; Its sampling method step include:

[0032] a. Remove the dissolved oxygen in the distilled water in the water quality sampling chamber, put the in-situ sediment-water interface water quality sampler into a closed container filled with water, with the sampling chamber on the sampling plate upward, and the sampler is completely immersed in the water to maintain the water temperature At 20 degrees ± 2 degrees, continuously add nitrogen to the water, measure the concentration of dissolved oxygen in the water, and control the concentration of dissolved oxygen in the water to less than 1 mg / L for 30 minutes;

[0033] b. Sampling, insert the sediment gap water sampling section of the in-situ sediment-water interface water quality sampler into...

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Abstract

The invention relates to an in situ deposit-aqueous interface water-quality sampler and a sampling method thereof. The sampler adopts a group of sampling plates and a group of protecting plates to clamp osmosis membranes and fix the osmosis membranes together by screws; the sampling plate is divided into an interstitial water sampling section of deposit and an overlying water sampling section of an interface in longitudinal direction; a plurality of transverse grooves which have longitudinal intervals of 2mm to 3mm are arranged on the interstitial water sampling section of deposit and the overlying water sampling section of the interface; the volume of the groove is between 2000microlitre to 4000microlitre; an interfacial limiting plate is arranged between the interstitial water sampling section of deposit and the overlying water sampling section of the interface; the sampler realizes in situ collection of deposit-aqueous interface water-quality samples, adopts an interfacial limiting device, and can accurately determine the deposit-aqueous interface; the sampler is equipped with a weight drop and a retrieve rope, can be used in aquatic deeper lakes, and has operability, site throwing and convenient retrieving; and the volume of each layer of water-quality sampling room reaches to 4000microlitre and can complete more index analysis simultaneously.

Description

technical field [0001] The invention relates to the analysis of pollutants in the lake sediment and the water overlying the sediment interface, in particular to an in-situ sediment-water interface water quality sampler and a sampling method thereof. Background technique [0002] At present, shallow lakes in my country are seriously polluted, and sediment is an important source of pollution. Especially with the urbanization process of the watershed and the development of industry and agriculture, excessive pollutants accumulate in the sediments. Under certain conditions, a large amount of pollutants accumulated in the sediments will seriously Affect the quality of the overlying water of the lake, resulting in continuous high pollution of the lake. For example, the release of nitrogen and phosphorus from sediments in shallow lakes can cause continuous eutrophication of lakes, seriously affect the governance effect, and threaten the safety of lake ecosystems and water quality....

Claims

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Application Information

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IPC IPC(8): G01N1/10
Inventor 王圣瑞金相灿储昭升吴丰昌
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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