Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Synchronization acquisition method of active phosphorus and iron in deposit

A simultaneous acquisition and sedimentation technology, which is applied in the preparation of test samples, measurement of color/spectral characteristics, and material analysis by observing the influence of chemical indicators, etc., can solve the difficulties of investigation, high cost, and low acquisition efficiency, etc. problem, to achieve the effect of short acquisition time, simple operation procedure and high efficiency

Inactive Publication Date: 2014-09-17
NANJING INST OF GEOGRAPHY & LIMNOLOGY
View PDF2 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the very significant spatial heterogeneity of sediments, obtaining phosphorus and iron content separately not only has the disadvantages of low acquisition efficiency and high cost, but also brings difficulties to the investigation of the relationship between the two due to the existence of spatial dislocation.

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
  • Synchronization acquisition method of active phosphorus and iron in deposit
  • Synchronization acquisition method of active phosphorus and iron in deposit
  • Synchronization acquisition method of active phosphorus and iron in deposit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Below in conjunction with accompanying drawing and example the method of the present invention is further described.

[0043] Put the DGT device in the method of the present invention into the Meiliang Bay sediment in Taihu Lake, take it out after 48 hours, transport it back to the laboratory, analyze the phosphorus and iron on the fixed film, and convert the phosphorus and iron accumulation on the fixed film Obtain the content and spatial distribution of reactive phosphorus and iron in sediment profiles.

[0044] The concrete operation of described method comprises the following steps:

[0045] (1) Preparation of phosphorus-iron synchronous enrichment fixed membrane: Mix 1g of hydrated zirconium hydroxide powder with a moisture content of 50±5% and 3-5mL of 30% polyacrylamide aqueous solution, grind, add 0.6-1g Chelex-100 cation exchange Stir the resin evenly to obtain a film-forming solution; add 4-8 μL of tetramethyldiethylamine (TEMED) and 12-16 μL of 10% (wt) ammo...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to View More

Abstract

A synchronization acquisition method of active phosphorus and iron in a deposit is disclosed; the principle of diffusive gradients in thin films (DGT) can be used, a fixing film and a diffusion film which are capable of performing phosphorus and iron synchronous enrichment are combined into a DGT acquisition device, the DGT acquisition device is put into the deposit for 2-6 days, active phosphorus and iron ions in the deposit pass through the diffusion film in a way of free diffusion, and then are acquired by the fixing film; after the DGT acquisition device is taken out, accumulation contents of phosphorus and iron on the fixing film can be respectively analyzed by use of a slicing-two step extraction-micro amount colorimetric method, and contents of the active phosphorus and iron in the deposit can be calculated by use of the Fick's first law of diffusion.

Description

technical field [0001] The invention relates to a method for synchronously obtaining active phosphorus and iron in environmental media such as soil and sediment, which can be used for the migration activity, biological effectiveness, pollution risk and the migration and transformation relationship of active phosphorus and iron in environmental media, etc. analysis and evaluation. Background technique [0002] Diffusive Gradients in Thin Films (DGT) technology is a new speciation analysis technology, mainly developed by Davison and Zhang of Lancaster University in the mid-1990s. Based on the principle of ion diffusion, this technology obtains the activity information of ions in the medium through the gradient diffusion of target ions in the defined diffusion layer and the study of related processes. The device of DGT measurement technology is composed of a fixed layer and a diffusion layer. The ions pass through the diffusion layer in a diffusion manner, and then are capture...

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
IPC IPC(8): G01N21/31G01N21/78G01N1/40
Inventor 丁士明陈义飞
Owner NANJING INST OF GEOGRAPHY & LIMNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com