Device and method for rapidly detecting residual quantity of abamectin B2a in soil
A technology of abamectin and a detection device, which is applied in the field of a rapid detection device for abamectin B2a residues in soil, can solve the problems of reduced detection efficiency, environmental pollution, unfavorable field investigation, etc., and achieves convenient detection and a large detection range , The effect of accelerating the extraction efficiency
Active Publication Date: 2020-10-09
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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Problems solved by technology
[0003] Abamectin B2a pesticides are easy to deposit in the soil and cause pollution to the environment. Therefore, it is very important for the detection of abamectin B2a pesticide residues in soil. However, most of the existing technologies use chromatographic instruments for detection. The operation is completed in the laboratory, which is not conducive to field investigation, resulting in a greatly reduced detection efficiency
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experiment example
[0052] A total of 100 soil samples were collected. The soil samples were mixed with different contents of abamectin B2a, and soil samples without pollutants were also included. Three experimental groups were set up for comparison. The test results of each experimental group were compared with those of Laboratory chromatographic detection standard is compared, and its accuracy rate is tested, and three experimental groups all adopt the device of the present invention to detect, and difference and test result are as shown in table 1:
[0053] Table 1 Test results of the three experimental groups
[0054]
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Abstract
The invention discloses a device and a method for rapidly detecting the residual quantity of abamectin B2a in soil. The device comprises a preprocessing unit, a detection unit and a control unit; thepreprocessing unit comprises a preprocessing box body, a roller shaft used for crushing samples in a sampling bag and a beaker used for extraction; the detection unit comprises a detection box body and a detection area located on one side of the detection box body and connected with the beaker through a sample feeding pipe; a detection test paper assembly is placed in the detection area, and a collection bottle used for collecting waste liquid is arranged below the detection area. According to the invention, the test paper is used for detecting the sample liquid;, a plurality of the detectionbelts are arranged, such that the rapid qualitative detection of the residual quantity of abamectin B2a can be achieved, the semi-quantitative detection can be performed, the detection range is large,and detection personnel can be assisted to determine the soil pollution condition in the region; and the device has the advantages of convenient detection, high detection accuracy and the like.
Description
technical field [0001] The invention belongs to the technical field of soil detection, and in particular relates to a rapid detection device and method for avermectin B2a residues in soil. Background technique [0002] Abamectin pesticide (Abamectin) appearance is light yellow to white crystalline powder, odorless. Melting point 155~160℃, vapor pressure 2×10 -7 Pa, relative density 1.16 (21°C). Slightly soluble in water; above 15℃, in organic solvents such as toluene, methanol, ethanol, DMF, acetone, etc., the solubility is extremely high. Good stability in aqueous solution (25°C) of pH 5.5-7.0; sensitive to strong acid and strong alkali; it will first change structure under sunlight irradiation, turn yellow and then degrade. Abamectin B2 is a neurotoxic agent with a unique mechanism of action: it acts on the γ-aminobutyric acid system of insect neuron synapses or neuromuscular synapses, stimulates nerve endings to release GABA, a neurotransmitter inhibitor, and promotes ...
Claims
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IPC IPC(8): G01N33/577G01N33/558G01N33/543G01N33/531
CPCG01N33/577G01N33/558G01N33/54306G01N33/5308G01N33/531G01N2430/10
Inventor 何健李菊颖孔德洋许静豆叶枝张悦清倪妮孔祥吉
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA