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Analysis method for contents of active components in benthiavalicarb.isopropyl-dimethomorph compound preparation

A technology of dimethomorph and diphenhydramine, which is applied in the field of pesticide analysis, can solve the problem of not being able to accurately analyze fenthiamine and diphenhydramine at the same time, and achieves high accuracy, good reproducibility and precision. high degree of effect

Active Publication Date: 2013-10-23
JINGBO AGROCHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the active ingredients of benthiazil-dimethomorph compound preparation are benthiazil and dimethomorph, there is no report for the simultaneous determination of benthiazil and dimethomorph, and the existing technology The analytical method in the above method cannot accurately analyze the content of benthiazil and dimethomorph in the compound preparation of benthiazil and dimethomorph at the same time

Method used

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  • Analysis method for contents of active components in benthiavalicarb.isopropyl-dimethomorph compound preparation
  • Analysis method for contents of active components in benthiavalicarb.isopropyl-dimethomorph compound preparation
  • Analysis method for contents of active components in benthiavalicarb.isopropyl-dimethomorph compound preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A batch of benthiazil·dimethomorph suspension concentrate is now being produced. In order to detect the content of the active ingredients benthiazil and dimethomorph, the high performance liquid chromatography external standard method is used to test the content of benthiazil·dimethomorph The suspending agent is carried out quantitative analysis, and described detection condition is: described liquid chromatograph is Agilent 1100 high performance liquid chromatograph; The volume fraction is 35% methanol-water solution, the mobile phase flow rate is 1.2mL / min, the column oven temperature is 10°C, and a UV detector is used with a detection wavelength of 240nm.

[0035] Specific steps include:

[0036] (1) Prepare standard stock solution

[0037] Precisely weigh 25 mg of benthiazil and 25 mg of dimethomorph into a 25 mL volumetric flask, add an appropriate amount of pure methanol to dissolve, and shake to volume with pure methanol to obtain the mother liquor;

[0038] (2...

Embodiment 2

[0055] A batch of benthiazil·dimethomorph aqueous solution is now being produced. In order to detect the content of the active ingredients benthiazil and dimethomorph, the high performance liquid chromatography external standard method is used to test the content of benthiazil·dimethomorph Water agent is carried out quantitative analysis, and described testing condition is: described liquid chromatograph is Agilent1100 high performance liquid chromatograph; The fraction is 50% methanol-water solution, the mobile phase flow rate is 1.0mL / min, the oven temperature is 30°C, a diode array detector is used, and the detection wavelength is 254nm.

[0056] Specific steps include:

[0057] (1) Prepare standard stock solution

[0058] Precisely weigh 25 mg of benthiazil and 25 mg of dimethomorph into a 25 mL volumetric flask, add an appropriate amount of pure methanol to dissolve, and shake to volume with pure methanol to obtain the mother liquor;

[0059] (2) Prepare standard soluti...

Embodiment 3

[0076] A batch of benthiazil·dimethomorph EC is now being produced. In order to detect the content of the active ingredients benthiazil and dimethomorph, the high performance liquid chromatography external standard method is used to analyze the content of benthiazil·dimethomorph EC. Carry out quantitative analysis, described detection condition is: described liquid phase ion chromatograph is Agilent1100 high performance liquid phase chromatograph; It is 55% methanol-water solution, the flow rate of the mobile phase is 0.8mL / min, the oven temperature is 50°C, a diode array detector is used, and the detection wavelength is 265nm.

[0077] Specific steps include:

[0078] (1) Prepare standard stock solution

[0079] Precisely weigh 25 mg of benthiazil and 25 mg of dimethomorph into a 25 mL volumetric flask, add an appropriate amount of pure methanol to dissolve, and shake to volume with pure methanol to obtain the mother liquor;

[0080] (2) Prepare standard solution

[0081] ...

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Abstract

The invention discloses an analysis method for the contents of active components in a benthiavalicarb isopropyl.dimethomorph compound preparation. The analysis method comprises the following steps of: utilizing a silica gel column with the column length of 250 mm and the column diameter of 4.6 mm, and taking methanol-water solution with the volume fraction of 35-55% as a mobile phase, wherein the flow velocity is 0.8-1.2 mL / min, and the column temperature is 10-50 DEG C; carrying out quantitative analysis on benthiavalicarb isopropyl and dimethomorph which are active components in the compound preparation by utilizing an ultraviolet detector or a diode array detector and a high performance liquid chromatography (HPLC) method, wherein the detection wavelength is 240-260 nm. The method has the advantages that the precision is high, the reproducibility is good, the accuracy is high and the repetitiveness is good; a basis is provided for the quantitative analysis of the active components in the benthiavalicarb isopropyl.dimethomorph compound preparation; the method has an important practical value for the application of the benthiavalicarb isopropyl.dimethomorph compound preparation in agricultural production practice.

Description

technical field [0001] The invention belongs to the technical field of pesticide analysis, and in particular relates to an analysis method for the content of active ingredients in a benthiazil-dimethomorph compound preparation. Background technique [0002] The benthiazil·dimethomorph compound preparation is composed of two fungicides, benthiazil and dimethomorph. It has high efficiency and broad spectrum, and has good protective and therapeutic effects. This product can improve crop yield and ensure quality, and has a longer duration than conventional fungicides; it has high selectivity, is safe for crops, humans, animals, and beneficial organisms, and basically has no pollution to the environment. The preparation and application of benthiazil-dimethomorph compound preparations have been reported in relevant scientific literature. [0003] In actual production, the benthiazil-dimethomorph compound preparation is produced according to the formula. After mass compounding pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88
Inventor 任丽艳李晓红李太衬姚刚张锐张守媛
Owner JINGBO AGROCHEM TECH CO LTD
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