Agent for rapidly detecting snail-killing agent of niclosamide on site

Abstract

The invention relates to agent for rapidly detecting the snail-killing agent of niclosamide on site, belonging to the technical field of the chemical agent preparing method. The agent for rapidly detecing the snail-killing agent of niclosamide on site comprises inorganic alkali, organic alkaline solvent, high-stability calcium and magnesium chelating agent and water. Because the anions of the niclosamide and the cations of the base-radical are combined into ion-association complex, the conjugate structure of the niclosamide molecule can be expanded, the effective light absorption area can be enlarged, the maximum light absorption peak can be subjected to the redshift, the molar light absorption coefficient can be magnified and the visible spectrophotometry and even the visual analysis of the niclosamide can be realized. The application dosage of the niclosamide can be rapidly detected on site with the direct spectrophotometry.

Description

technical field

[0001] The invention relates to the technical field of preparation methods of chemical reagents, in particular to chemical reagents for on-site rapid detection of molluscicide niclosamide. Background technique

[0002] Niclosamide is currently the only molluscicide recommended by WHO, and 50% niclosamide ethanolamine salt wettable powder is mostly used in my country today. So far, there is no method suitable for rapid detection of niclosamide at home and abroad. Due to the existence of complex factors such as terrain and water volume, it is difficult to control the dosage of this drug in the process of spraying or soaking molluscs in the wild. If the dosage is small, the snails will not be killed. It is very necessary to supervise and monitor the killing process and establish a rapid and sensitive detection method and supporting instruments for niclosamide on site. So far, the analysis methods of niclosamide include chromatography, voltammetry and UV-visibl...

Examples

Embodiment 1

[0019] Weigh 40 g of solid sodium hydroxide, 20 g of ethylenediaminetetraacetic acid (or a salt of ethylenediaminetetraacetic acid), and 100 ml of a 50% tetramethylammonium hydroxide solution, mix and dissolve in water, and set the volume to 250 ml.

Embodiment 2

[0021] Weigh 56 g of potassium hydroxide solid, 25 g of diethyltriaminepentaacetic acid (DTPA), and 100 ml of dimethylformamide (DMF), mix them and dissolve them in water to make the volume 250 ml.

Embodiment 3

[0023] Weigh 56 grams of potassium hydroxide solid, 25 grams of ethylenediamine tetraacetic acid, and 150 milliliters of triethanolamine, mix them and dissolve them in water to make the volume 250 milliliters.

technical field

[0001] The invention relates to the technical field of preparation methods of chemical reagents, in particular to chemical reagents for on-site rapid detection of molluscicide niclosamide. Background technique

[0002] Niclosamide is currently the only molluscicide recommended by WHO, and 50% niclosamide ethanolamine salt wettable powder is mostly used in my country today. So far, there is no method suitable for rapid detection of niclosamide at home and abroad. Due to the existence of complex factors such as terrain and water volume, it is difficult to control the dosage of this drug in the process of spraying or soaking molluscs in the wild. If the dosage is small, the snails will not be killed. It is very necessary to supervise and monitor the killing process and establish a rapid and sensitive detection method and supporting instruments for niclosamide on site. So far, the analysis methods of niclosamide include chromatography, voltammetry and UV-visibl...

Examples

Embodiment 1

[0019] Weigh 40 g of solid sodium hydroxide, 20 g of ethylenediaminetetraacetic acid (or a salt of ethylenediaminetetraacetic acid), and 100 ml of a 50% tetramethylammonium hydroxide solution, mix and dissolve in water, and set the volume to 250 ml.

Embodiment 2

[0021] Weigh 56 g of potassium hydroxide solid, 25 g of diethyltriaminepentaacetic acid (DTPA), and 100 ml of dimethylformamide (DMF), mix them and dissolve them in water to make the volume 250 ml.

Embodiment 3

[0023] Weigh 56 grams of potassium hydroxide solid, 25 grams of ethylenediamine tetraacetic acid, and 150 milliliters of triethanolamine, mix them and dissolve them in water to make the volume 250 milliliters.