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Soil chemistry sensor

一种化学传感器、传感器的技术，应用在土壤化学传感器领域，能够解决昂贵、缓慢、麻烦等问题

Active Publication Date: 2015-09-02
PLANT BIOSCI LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The process is cumbersome, slow and expensive, and there is a need for improved technology, especially one that is effective but relatively cheap

Method used

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Examples

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example

[0090] An example ammonium sensor is 90% (w / w) potassium ionophore mixture and 10% (w / w) PVC polymer. The potassium ionophore mixture comprises:

[0091] 5% by weight potassium ionophore (Sigma Prod. No. 60403) valinomycin.

[0092] 93% by weight 1,2 dimethyl-3-nitrobenzene (Sigma Product No. 40870).

[0093] 2% by weight tetrakis(4-chlorophenyl)borate (Sigma Prod. No. 60591).

[0094]

[0095] Phosphate

[0096] Example phosphate sensor components can be based on the phosphate sensor of Carey CM & Riggan WB Anal Chem.1994 Nov 1; 66(21): 3587-91, which is a hydrogen phosphate-selective electrode Cyclic polyamine ionophores. Further details can be found in EP2376442A to which reference can be made. The composition is similar to that used for nitrates.

[0097]

[0098] In addition, reference can be made to Kim et al. 2007 Transactions of ASABE 50(2):415-425, which shows that similar cobalt sensors can be fabricated.

[0099] pH (proton)

[0100] An example pH ...

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Abstract

A soil chemistry sensor 100 for in-situ soil sensing comprises a probe incorporating a first, ion-selective electrode 102 and a second, reference electrode 104, wherein said ion-selective electrode comprises a first-electrode housing 106 defining a first lumen having an ion-selective plug / membrane 108 towards a distal end, said first-electrode including a first conductor 112 in a first electrolyte 110, wherein said reference electrode comprises a second electrode housing 114 defining a second lumen having a porous reference electrode plug / membrane 116 towards a distal end, said second electrode including a second conductor 112 in a second electrolyte 118, wherein said ion-selective plug and said porous reference electrode plug are within 10mm of one another, and each comprise a polymer. The reference electrode preferably comprises a double junction electrode housing 114 having two lumen 114a, 114b.

Description

field of invention [0001] The present invention relates to soil chemical sensors, particularly for sensing nitrate levels, and to the manufacture and use of such sensors. Background of the invention [0002] Inorganic fertilizers, especially nitrogen-based fertilizers, have revolutionized agriculture. However, effective management of the amount of fertilizer applied to land is important for many reasons, including economic efficiency and environmental stewardship—excess nitrogen lost from agriculture can enter drinking water, causing significant human health concerns, and It can also damage freshwater and marine ecosystems. Various techniques are known for monitoring nitrate levels in soil. Typically, soil samples are taken, nitrogen is extracted, and then used to predict the amount of nitrogen available to plant roots in the soil. However, this is a time-consuming process that typically involves taking many soil samples and waiting an average of two weeks for results to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/403
CPCG01N27/4035G01N27/283G01N33/24G01N27/30G01N27/333
Inventor 托尼·米勒皮埃尔-亨利·勒贝纳雷雨果·马洛里
Owner PLANT BIOSCI LTD
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