An experimental device capable of obtaining millimeter-scale layered sediment samples and its application
An experimental device and a sediment technology, which are applied in the field of experimental devices for processing samples, can solve the problems of thick layering and are not suitable for the collection of millimeter-level layered sediments, achieve easy processing cost, easy to observe and use, and solve the problem of difficult acquisition. Effect
Inactive Publication Date: 2018-10-16
TIANJIN UNIV
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Problems solved by technology
The problem with this method is that the main function of this sampler is to sample, and the layers are thicker, which is not suitable for the collection of millimeter-scale layered sediments
Method used
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Embodiment
[0029] Embodiment: The following is an example of the impact research of benthic microalgae on the degradation of polycyclic aromatic hydrocarbons in surface sediments, and the specific embodiments of the present invention are described in detail:
[0030] 1. Preparation of sediment samples: install the bottom gasket in the cylinder, push the bottom gasket to the bottom of the cylinder, and wrap the sealing film under the bottom gasket to seal; Put the sediment of 2mm sieve into the cylinder to form a sediment layer with a thickness of 2cm (as shown in the figure 3), soak it with an appropriate amount of artificial seawater, and add artificial seawater with a height of about 2cm as the upper layer. Cover with water (shown as number 2 in the figure), and after 15 minutes of stabilization, inoculate the pre-amplified algae species on the surface of the sediment, and the inoculation density is about 2.5*10 5 piece / cm 2 . Place the entire setup in a water tank for cultivation an...
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Abstract
The invention discloses an experimental device capable of acquiring a millimeter-scale layered sediment sample and an application of the experimental device. The device comprises a cylinder, a bottom gasket, thick gaskets and thin gaskets, wherein the cylinder is hollow, the bottom gasket is arranged in the cylinder, and the thick gaskets and the thin gaskets are arranged below the bottom gasket; the cylinder and the gaskets are detachable and can be repeatedly used; the cylinder and the gaskets have the advantages of being easy to process and low in cost; during sampling, sediments are moved upwards by means of the gaskets, the sediments bulging out of the cylinder are accurately collected, longitudinal millimeter-scale layering of the sediments is realized, and the problem of difficulty in acquisition and layering of sediments for a beaker experiment is effectively solved; materials of the device all adopt organic glass, and observing and using in the experiment process are facilitated.
Description
technical field [0001] The invention relates to an experimental device for processing samples, in particular to an experimental device capable of obtaining millimeter-scale layered sediment samples and its application. Background technique [0002] Sediments are not only sinks but also sources of pollutants. The physical, chemical and biological effects of the sediment-water interface lead to gradient changes in the environmental indicators (such as redox potential) and microbial flora structure in the vertical direction of the surface sediment. It is also because of the gradient characteristics of these indicators that affect the reduction of pollutants in the vertical direction of the sediment. Therefore, it is very important to study the variation characteristics of biological indicators, physical and chemical indicators and pollution indicators in the vertical direction of the sediment surface. The stratification of sediment collection is also a key link in this study....
Claims
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IPC IPC(8): G01N1/28G01N1/02G01N33/00G01N33/18
CPCG01N1/02G01N1/28G01N33/00G01N33/18
Inventor 迟杰贾汭婵张璠
Owner TIANJIN UNIV