A method for rapid detection of clethodim pesticide residues in soil

A technology for clethodim and soil, applied in the fields of environmental protection and agricultural production, can solve the problems of high determination cost of clethodim and complicated processing process, and achieve the effects of high degree of automation, low detection cost, and short time consumption.

Active Publication Date: 2016-07-06
YANGZHOU POLYTECHNIC INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the defects of high cost and cumbersome processing process of clethodim at present, and propose a simple and fast method for detecting clethodim pesticide residues in soil

Method used

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  • A method for rapid detection of clethodim pesticide residues in soil
  • A method for rapid detection of clethodim pesticide residues in soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] 1. Make a linear relationship diagram between clethodim concentration and current:

[0026] 1. After cleaning the glassy carbon electrode, use TiO on its surface 2 After the suspension was drip-coated, it was left to dry at room temperature to make TiO 2 Modified glassy carbon electrodes.

[0027] 2. Dissolve clethodim in acetonitrile to make a concentration of 1mmolL -1 For clethodim acetonitrile solution, add 0μL, 0.5μL, 10μL, 20μL, 40μL, 60μL 1mmolL to the glass container with 5mL phosphate buffer solution respectively -1 Clethodim solution, prepared at concentrations of 0, 0.1, 2.0, 4.0, 8.0 and 12 μmolL -1 clethodim electrolyte.

[0028] Take 0μL concentration as 1mmolL -1 Clethodim solution (blank) was placed in a glass container filled with 5 mL of PBS (phosphate buffered saline) as CK (0 μmol L -1 ).

[0029] Take 0.5μL concentration as 1mmolL -1 The clethodim solution was placed in the aforementioned glass container filled with 5 mL of PBS (phosphate bu...

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Abstract

A method for quickly detecting clethodim pesticide residues in soil, which involves the field of agricultural production technology and also involves the field of environmental protection technology. 2 The modified glassy carbon electrode is used as the working electrode, the saturated potassium chloride electrode is used as the reference electrode, and the platinum electrode is used as the auxiliary electrode, and the clethodim solution to be tested extracted from the soil is added to a glass container filled with phosphate buffer solution Middle; with a 250-watt halogen tungsten lamp as the light source, the clethodim electrolyte to be tested is irradiated, and the peak value of the photocurrent signal of the clethodim solution to be tested is measured; the linear relationship diagram between the concentration and current of clethodim is prepared , to measure the peak value of the photocurrent signal of the clethodim solution to be tested, and find the concentration of clethodim in the test sample. The method takes only 3 minutes to obtain the analysis result, has low detection cost, high degree of automation, simple operation and small sampling volume.

Description

technical field [0001] The invention relates to the technical field of agricultural production and also to the technical field of environmental protection, in particular to the detection technology of clethodim pesticide residue in soil. Background technique [0002] Clethodim is a new type of dry field post-emergence herbicide with excellent selectivity. It is suitable for controlling wild oats, crabgrass, foxtail, goosegrass, bluegrass, hard grass and other gramineous weeds in broad-leaved fields such as soybeans, rapeseed, cotton, and peanuts. After spraying, it can be quickly absorbed by the stems and leaves of gramineous weeds and transmitted to the shoot tips and meristems, inhibiting the activity of meristems, destroying cell division, and eventually leading to the death of weeds. It is widely used in vegetables, food crops, etc. In the production process, the current scope of use has a tendency to further expand. However, with the continuous expansion of its scope ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/26G01N27/30
Inventor 金党琴
Owner YANGZHOU POLYTECHNIC INST
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