A po-dgt combined detection device and collection and detection method for sediment nutrients

A technology of PO-DGT and detection device, which is applied in the direction of measuring device, test sample preparation, sampling, etc., can solve the problems of poor consistency of adsorption rate, insufficient adsorption rate, low analysis and determination efficiency, etc., and achieve large capacity and high adsorption Effect of upper limit, high fixed adsorption rate and extraction rate

Active Publication Date: 2022-07-19
南京国兴环保产业研究院有限公司 +1
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing immobilized gel films can only selectively adsorb a single element, resulting in low analysis and determination efficiency, and cannot achieve in-situ simultaneous enrichment detection
In addition, since the nitrogen element in the natural environment mainly exists NO 3 -N and NH 4 -N two states, the adsorption rate consistency of the existing direct adsorption gel is poor, and the adsorption rate is not enough

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A po-dgt combined detection device and collection and detection method for sediment nutrients
  • A po-dgt combined detection device and collection and detection method for sediment nutrients
  • A po-dgt combined detection device and collection and detection method for sediment nutrients

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Below in conjunction with the accompanying drawings and specific embodiments, the present invention will be further clarified. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. Modifications of equivalent forms all fall within the scope defined by the appended claims of this application.

[0032] like figure 1 As shown in the figure, the PO-DGT combined sensor acquisition device in the PO-DGT combined acquisition method for the synchronous distribution information of nutrients in water sediments mainly includes a PVDF filter membrane, a fixed adsorption membrane and a planar optode superimposed in sequence. membrane (O 2 sensing membrane), where the PVDF filter is in contact with the sediment to be tested, and the O 2 The sensing film is attached to the inner wall of the transparent plexiglass box. in:

[0033] the O 2 The preparation method of the sensing film is as...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a PO-DGT combined detection device for sediment nutrients and a collection and detection method. The device includes a transparent box for containing sediment samples, a PO-DGT composite sensor, and a reinforcing light source for supplementing light. and a camera, the PO-DGT composite sensor includes a PVDF filter membrane, a fixed adsorption film and a flat optode film that are stacked in sequence, the PO-DGT composite sensor is attached to the inner wall of the transparent box, and the flat opto-electrode film is made to face In addition, the PVDF filter membrane is in contact with the sediment; the camera head of the camera is facing the plane optode film, and the reinforcing light source is arranged near the plane optode film; the fixed adsorption film in the PO-DGT composite sensor is made of agarose. base, load NO 3 ‑N Adsorbent and NH 4 ‑N adsorption material, doped with Zr‑oxide powder, can simultaneously collect, detect and analyze N‑P distribution information in water sediments.

Description

technical field [0001] The invention belongs to the technical field of enrichment, collection and analysis of nutrient elements in environmental media, and particularly relates to the collection of nitrogen and phosphorus elements in water body sediments. Background technique [0002] At present, the determination of active phosphorus and nitrogen in water sediments usually adopts an active method, that is, after the sediments are taken out from the water body, they are sent back to the laboratory for analysis. Since the sediment is in a reducing environment under the natural conditions of the water body, it is very easy to change after being taken out, resulting in analysis errors. The currently developed passive sampling and analysis method, the thin film diffusion gradient technology DGT, can place a fixed gel film that can absorb phosphorus, nitrogen, sulfur, heavy metals and other elements in the in-situ sediment for enrichment, and then take it out for analysis. Indir...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/84G01N1/28G01N1/40G01N30/00
CPCG01N21/84G01N1/405G01N1/28G01N30/00
Inventor 丁士明任明漪王燕
Owner 南京国兴环保产业研究院有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap