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A detection system, preparation method and detection method of spray droplet density and size that can be used well in both dry and humid environments

A wet environment and system technology, applied in the direction of chemical reaction of materials, material analysis by observing the influence of chemical indicators, etc., can solve problems such as result interference, and achieve simple use, easy to carry, and good quality. effect used

Inactive Publication Date: 2017-09-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because its principle is to develop color when it meets water, it is easy to interfere with the results in humid environments, such as when there is a lot of dew in the morning, or when the humidity is high in some areas in the south.

Method used

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  • A detection system, preparation method and detection method of spray droplet density and size that can be used well in both dry and humid environments
  • A detection system, preparation method and detection method of spray droplet density and size that can be used well in both dry and humid environments
  • A detection system, preparation method and detection method of spray droplet density and size that can be used well in both dry and humid environments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) Weigh 3g of starch, add it to a beaker filled with 100mL of deionized water, put it in a boiling water bath, stir and heat until completely dissolved, take it out and cool to room temperature;

[0048] (2) Add: 20g of tartaric acid, 0.5g of sulfonamide, 0.1g of 1-naphthylethylenediamine dihydrochloride to the solution of step (1), stir or sonicate until completely dissolved;

[0049] (3) Add 30 g of calcium sulfate to the solution in step (2), stir or sonicate, so that the calcium sulfate is evenly suspended without obvious particles visible to the naked eye;

[0050] (4) Apply the suspension prepared in step (3) evenly on the quantitative filter paper with a brush;

[0051] (5) Put the cardboard prepared in step (4) into an oven at 55°C for drying;

[0052] (6) Cut the cardboard dried in step (5) into 3cm×4cm, bind and pack.

[0053] In addition, an appropriate amount of sodium nitrite was weighed and packaged. When the spray droplets are to be measured, it is p...

Embodiment 2

[0056] (1) Weigh 5g of starch, add it to a beaker filled with 100mL of deionized water, put it in a boiling water bath, stir and heat until completely dissolved, take it out and cool to room temperature;

[0057] (2) Add: 20g of tartaric acid, 0.5g of sulfonamide, 0.1g of 1-naphthylethylenediamine dihydrochloride to the solution of step (1), stir or sonicate until completely dissolved;

[0058] (3) Add 35g of calcium sulfate to the solution in step (2), stir or sonicate, so that the calcium sulfate is evenly suspended without obvious particles visible to the naked eye;

[0059] (4) Apply the suspension prepared in step (3) evenly on the quantitative filter paper with a brush;

[0060] (5) Put the cardboard prepared in step (4) into an oven at 55°C to dry until half-dry, and air-dry at room temperature;

[0061] (6) Cut the cardboard dried in step (5) into 3cm×4cm, bind and pack.

[0062] In addition, an appropriate amount of sodium nitrite was weighed and packaged. When the...

Embodiment 3

[0065] (1) Weigh 5g of starch, add it to a beaker filled with 100mL of deionized water, put it in a boiling water bath, stir and heat until completely dissolved, take it out and cool to room temperature;

[0066] (2) Add: 20g of tartaric acid, 0.5g of sulfonamide, 0.1g of 1-naphthylethylenediamine dihydrochloride to the solution of step (1), stir or sonicate until completely dissolved;

[0067] (3) Add 35g of calcium sulfate to the solution in step (2), stir or sonicate, so that the calcium sulfate is evenly suspended without obvious particles visible to the naked eye;

[0068] (4) Apply the suspension prepared in step (3) evenly on the A4 paper with a brush;

[0069] (5) Put the cardboard prepared in step (4) into an oven at 55°C for drying;

[0070] (6) Cut the cardboard dried in step (5) into 3cm×5cm, bind and pack.

[0071] In addition, an appropriate amount of sodium nitrite was weighed and packaged. When the spray droplets are to be measured, it is prepared into a sol...

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PUM

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Abstract

The invention discloses a droplet density and size detection system belonging to the field of spraying pesticides and chemical fertilizers. The detection system includes two parts: a detection card and a detection substance. The detection card includes a substrate and a coating coated on the substrate. The base sheet is paper or cardboard made of fibers, such as filter paper, A4 paper, and the coating is a mixture of binder, adsorption carrier and color reagent, and the binder is polyvinyl alcohol or polyvinyl alcohol. Methyl methacrylate or starch or latex, etc., the adsorption carrier is calcium sulfate or mica powder or talc powder or bentonite, etc., and the color reagent is hydroxylamine hydrochloride, ammonium acetate, glacial acetic acid, o-phenanthroline, sulfonamide, Tartaric acid, dihydrochloride-1-naphthaleneethylenediamine, etc.; the detection solution contains a suitable concentration of color-developing substances corresponding to the detection card. The invention discloses a preparation and a detection method of the detection system. The detection system of the invention is simple and convenient to use, is portable, can be used indoors and outdoors, and can simultaneously measure the spray droplet density and droplet size. Compared with the existing similar products, the present invention has the advantage that it can be used well in humid environment.

Description

technical field [0001] The invention belongs to the field of spraying of pesticides and chemical fertilizers, and in particular relates to a detection system, preparation method and detection method for the density and size of spray droplets suitable for use in humid environments. Background technique [0002] Among crop protection measures, chemical pesticide control is a very effective method of controlling plant diseases and insect pests. Chemicals are used in various ways, including spraying, dusting, particle spreading, seed dressing, etc. Among them, the spraying method is the most commonly used. During the use of pesticides at home and abroad, most of the pesticides apply the active ingredients to the surfaces of plants, harmful organisms and soil by spraying. [0003] Spray quality has a direct impact on drug efficacy, one of which is the size of the spray droplet density. Appropriate droplet density can ensure uniform deposition of medicament on the target surface...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78
Inventor 郑琦琦俞永华吴坚
Owner ZHEJIANG UNIV