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Method for detecting mesotrione, ametryn and halosulfuron-methyl in sugarcane

A technology of chlorpyrazosulfuron-methyl and mesotrione, which is applied in the field of detection of mesotrione in sugarcane by ametryn and chlorpyrazosulfuron-methyl, can solve the problem that the detection process takes a long time and cannot meet the maximum limit value Requirements, complex processing process and other issues, to achieve simple, fast and accurate detection, shorten the time of instrument data collection, shorten the effect of pre-processing time

Active Publication Date: 2020-11-20
安徽华辰检测技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The quantitative limit of liquid chromatography is relatively high, which can no longer meet the requirements of the maximum limit value established at home and abroad; liquid chromatography-mass spectrometry, the sample pretreatment process is complicated and cumbersome, and the detection process takes a long time
Moreover, there is no report on the simultaneous detection of the three herbicide residues. Research is needed to find a reliable method for the detection of the above three drugs in the sugarcane matrix.

Method used

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  • Method for detecting mesotrione, ametryn and halosulfuron-methyl in sugarcane
  • Method for detecting mesotrione, ametryn and halosulfuron-methyl in sugarcane
  • Method for detecting mesotrione, ametryn and halosulfuron-methyl in sugarcane

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Effect test

Embodiment 1

[0047] A method for detecting mesotrione, ametryn and chlorpyrazosulfuron-methyl in sugarcane, which is detected by liquid chromatography tandem mass spectrometer LCMS-8050 from Shimadzu Corporation, Japan, wherein the high performance liquid chromatography conditions are: chromatographic column It is a Shim-pack GISTC18 chromatographic column (2.1×100mm, 2.0μm), mobile phase A is formic acid aqueous solution with a volume fraction of 0.1%, mobile phase B is acetonitrile, and the elution method is isocratic elution, mobile phase A and mobile phase The volume ratio of B is 50:50, the flow rate is 0.3mL / min; the column temperature is 38°C, the injection volume is 1μL, and the HPLC acquisition time is ≤5min;

[0048] The mass spectrometry conditions are: the ion source is an electrospray ion source under atmospheric pressure, a triple quadrupole mass analyzer, the temperature of the DL tube is 250°C, the temperature of the heating block is 400°C, the interface temperature is 300°C...

Embodiment 2

[0079] Embodiment 2 recovery test

[0080] By adding samples with known concentrations, the residual amounts of mesotrione, ametryn, and chlorpyrazosulfuron-methyl in the samples were detected according to the method and detection conditions of Example 1, and the recovery rate was calculated.

[0081] experiment procedure:

[0082] Take sugarcane blank matrix, weigh 6 parts, weigh 2.000g for each part, and number them as A, B, C, D, E, F, and then take standard reserves of mesotrione, ametryn, and chlorpyrazosulfuron-methyl Solution (same as Example 1) was diluted to different concentrations respectively, added to A, B, C, D, E, F sugarcane blank matrix, mixed uniformly, so that in A, B samples, mesotrione, ametryn and chlorine The added concentrations of pyrazosulfuron-methyl were 0.02mg / kg, 0.01mg / kg, and 0.01mg / kg in turn; the added concentrations of mesotrione, ametryn and chlorpyrazosulfuron-methyl in samples C and D were all 0.05mg / kg; the concentration of mesotrione,...

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Abstract

The invention discloses a method for detecting mesotrione, ametryn and halosulfuron-methyl in sugarcane. A high performance liquid chromatography-mass spectrometry method is adopted for detection, therecovery rate of mesotrione in a sugarcane matrix is 92.9%-103.0%, and RSD is 1.1%-1.4%; the recovery rate of the ametryn is 101.0%-103.0%, and the RSD is 0.6%-0.7%; and the recovery rate of the halosulfuron-methyl is 105.0%-114.0%, and the RSD of is 0.7%-2.0%. A reliable detection method is provided for researching the change condition of the residual quantity of sugarcane after the three medicines are applied, and meanwhile, the blank that mesotrione, ametryn and halosulfuron-methyl in a sugarcane matrix cannot be simultaneously detected by an existing method is filled.

Description

technical field [0001] The invention relates to the technical field of pesticide residue detection, in particular to a method for detecting mesotrione, ametraz and chlorpyrazosulfuron-methyl in sugarcane. Background technique [0002] Mesotrione is a pre-emergence and post-emergence selective herbicide that inhibits hydroxyphenylpyruvate dioxygenase, ametrazine is a triazine selective systemic herbicide, chlorine Pyrazosulfuron-methyl is a sulfonylurea herbicide. The combination of three herbicides can effectively control various field broadleaf grasses and some grass weeds. It has been widely used in the control of various field weeds. [0003] At present, the maximum residue limits for these three herbicides are relatively small at home and abroad, and instruments with higher sensitivity are needed to participate in daily detection. There are reports on the detection methods of the above three herbicides, mainly liquid chromatography and liquid chromatography-mass spectro...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/86
CPCG01N30/02G01N30/06G01N30/8675G01N2030/047
Inventor 王小明张辉乔琳程冰峰
Owner 安徽华辰检测技术研究院有限公司
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