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Ammonia detection material and detector

A technology for detecting materials and detectors, applied in the field of detectors to achieve the effect of simple sensitivity

Active Publication Date: 2020-10-09
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the conventional material described in Patent Document 3 {Fe(pyrazine)[Ni(CN) 4 ]} The problem is that gases other than ammonia are also detected

Method used

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  • Ammonia detection material and detector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] (manufacture of ammonia detection material)

[0112] In a Erlenmeyer flask containing 360 mL of a mixed solvent of distilled water and ethanol at room temperature, 0.45 g of cobalt chloride (II) hexahydrate and 0.32 g of L-ascorbic acid were added and dissolved. Separately, 0.45 g of potassium tetracyanonickelate (II) monohydrate was added to a Erlenmeyer flask containing 360 mL of a mixed solvent of distilled water and ethanol at room temperature, and dissolved. The above-mentioned tetracyanonickel solution was added dropwise to the above-mentioned cobalt solution using a separatory funnel over 1 hour. After completion of the dropwise addition, the mixture was stirred overnight using a magnetic stirrer. The precipitated particles were filtered and washed with pure water, and the recovered particles on the filter paper were vacuum-dried for 5 hours to obtain pink crystals. Ammonia detection material A shown in Table 1 was obtained.

[0113] The composition of the det...

Embodiment 2

[0131] In a Erlenmeyer flask containing 360 mL of a mixed solvent of distilled water and ethanol at room temperature, 0.45 g of cobalt chloride (II) hexahydrate and 0.32 g of L-ascorbic acid were added and dissolved. Separately, 0.45 g of potassium tetracyanonickelate (II) monohydrate was added to a Erlenmeyer flask containing 360 mL of a mixed solvent of distilled water and ethanol at room temperature, and dissolved. Using a separating funnel, the above-mentioned nickel tetracyanide solution was added dropwise to the above-mentioned cobalt solution over a period of 1 hour. After completion of the dropwise addition, the mixture was stirred overnight using a magnetic stirrer. Precipitated particles were filtered and washed with pure water, and recovered after vacuum drying for 5 hours. 0.1 g of the obtained granules were dispersed in ethanol, and 0.1 g of pyrazine was added. After stirring for 1 hour, the precipitated precipitate was filtered and dried in vacuum for 1.5 hours...

Embodiment 3

[0135] In a Erlenmeyer flask containing 360 mL of a mixed solvent of distilled water and ethanol at room temperature, 0.45 g of copper sulfate pentahydrate and 0.32 g of L-ascorbic acid were added and dissolved. Separately, 0.45 g of potassium tetracyanonickelate (II) monohydrate was added to a Erlenmeyer flask containing 360 mL of a mixed solvent of distilled water and ethanol at room temperature, and dissolved. The above-mentioned nickel tetracyanide solution was added dropwise to the above-mentioned copper solution using a separatory funnel over 1 hour. After completion of the dropwise addition, the mixture was stirred overnight using a magnetic stirrer. The precipitated particles were filtered and washed with pure water, and dried in vacuum for 5 hours to obtain light green crystals. Ammonia detection material C shown in Table 1 was obtained.

[0136] An ammonia detection sheet was produced in the same manner as in Example 1 except that the ammonia detection material C w...

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Abstract

The invention provides an ammonia detection material and a detector containing the ammonia detection material, wherein ammonia can be easily, sensitively, continuously and selectively detected by theammonia detection material. The ammonia detection material according to the present invention is characterized by being represented by general formula (1): M1xFey (pyrazine) s [Ni1-tM2t (CN) 4] zH2O (1) (wherein M1 = Co or Cu; 0.6 < = x < = 1.05; 0 < = y < = 0.4; 0 < = s < = 1; M2=Pd, Pt; 0 < = t < 0.15; 0 < = z < = 6.

Description

technical field [0001] The invention relates to an ammonia detection material and a detector containing the ammonia detection material. Background technique [0002] Ammonia is produced by microorganisms decomposing amino acids when animal food rots. Generally, consumers use their noses to directly detect the odor of rotting gas. [0003] In addition, ammonia is contained in urine or sweat, and when suffering from nephritis, cystitis, urethritis, prostatitis and other diseases, the concentration of ammonia will increase. Therefore, early detection of these diseases can be achieved by detecting ammonia contained in urine or sweat. [0004] As a method for detecting ammonia gas, there are methods using a semiconductor sensor described in Patent Document 1 or a method using a sheet loaded with a pH detection material such as bromophenol blue described in Patent Document 2. However, in the methods described in Patent Document 1 and Patent Document 2, there are problems such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78C01C3/11
CPCG01N21/783C01C3/11C01P2004/01C01P2002/87C01P2002/88C01P2002/89C07F15/04G01N31/223Y02A50/20C07F15/06
Inventor 真贝尚吾加藤友彦
Owner TDK CORPARATION
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