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Method for detecting 1-hydroxybenzotriazole in soil and plants

A technology of hydroxybenzotriazole and detection method, which is applied in the field of environmental sample detection, can solve the problems of less attention to analysis methods and less research on 1-hydroxybenzotriazole, and achieves improved method sensitivity, high selectivity and Sensitivity, effect of reducing solvent usage

Active Publication Date: 2017-06-30
中科检测技术服务(广州)股份有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the detection of benzotriazole compounds is mainly concentrated in environmental water systems such as rivers, lakes and sediments, but less attention has been paid to their analysis methods in soil and plants
In addition, the research on benzotriazole compounds mainly lies in the three compounds of benzotriazole, 5-methyl-1H-benzotriazole and 5,6-dimethyl-1H-benzotriazole. For 1 -Hydroxybenzotriazoles are less studied

Method used

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  • Method for detecting 1-hydroxybenzotriazole in soil and plants
  • Method for detecting 1-hydroxybenzotriazole in soil and plants
  • Method for detecting 1-hydroxybenzotriazole in soil and plants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Sample pretreatment

[0049] Collect 100g of soil samples, remove larger impurities such as stones, freeze-dry, grind and pass through a 0.90mm sieve.

[0050] (2) Accelerated solvent extraction

[0051] The sample is extracted with an accelerated solvent extraction apparatus. The extraction process: spread a piece of filter paper on the bottom of the stainless steel extraction pool, add 2.0g of silica gel, tap the extraction pool to make the surface of the silica gel smooth, then add 2.0g of anhydrous sodium sulfate to level the surface, Add 5.0g of soil sample, and add 100μL of 1mg / L internal standard deuterated thiabendazole working solution dropwise after leveling. After the solvent of the internal standard solution evaporates, add 5.0g of quartz sand, and finally press another piece of filter paper. Tighten, tighten the extraction pool, put it into the accelerated solvent extraction device for extraction. The extraction solvent is methanol / dichloromethane (vo...

Embodiment 2

[0069] (1) Sample pretreatment

[0070] Collect 50 g of wheat grain samples, remove obvious impurities, freeze-dry and grind them with a plant grinder.

[0071] (2) Accelerated solvent extraction

[0072]The sample is extracted with an accelerated solvent extraction instrument. The extraction process: spread a piece of filter paper on the bottom of the stainless steel extraction pool, add 2.0g of silica gel, tap the extraction pool to make the surface of the silica gel smooth, then add 3.0g of anhydrous sodium sulfate to level the surface, Add 5.0g of wheat grain sample, after smoothing, add 100μL of 1mg / L internal standard deuterated thiabendazole working solution dropwise, after the solvent of the internal standard solution evaporates, add 2.0g of quartz sand, and finally put in another filter paper Compress and tighten the extraction cell, and put it into the accelerated solvent extraction device for extraction. The extraction solvent is methanol / dichloromethane (volume r...

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Abstract

The invention discloses a method for detecting 1-hydroxybenzotriazole in soil and plants. The method comprises following steps: pretreatment of a sample; accelerated solvent extraction; preparation of a standard working solution; detection with an HPLC-MS (high performance liquid chromatography-mass spectrometer). According to the method, a rapid and efficient extraction method with high recovery rate is established with an accelerated solvent extraction technology, after synchronous purification or solid-phase extraction purification, detection is performed with HPLC-MS, so that matrix interference is effectively eliminated, the recovery rate of 1-hydroxybenzotriazole in a soil sample is 92.6%, standard deviation is 2.4%, the matrix effect is 90.7%, detection limit is 0.15 ng / g, and limit of quantitation is 0.51 ng / g; the recovery rate of 1-hydroxybenzotriazole in a plant sample is 89.8%, standard deviation is 1.6%, the matrix effect is 90.3%, detection limit is 0.69 ng / g, and limit of quantitation is 2.31 ng / g.

Description

technical field [0001] The invention belongs to the field of environmental sample detection, in particular to a method for detecting 1-hydroxybenzotriazole in soil and plants. Background technique [0002] Benzotriazoles (Benzotriazoles, BTs) are a class of compounds with a benzotriazole heterocyclic structure, which have excellent stability and corrosion resistance. After contacting with metals, they can complex on the metal surface to form a layer of A protective layer that prevents corrosion of metals. As a widely used additive, benzotriazole compounds are widely added to industrial products such as refrigeration fluids, hydraulic fluids, antifreeze agents, detergents, and aircraft deicing / anti-icing fluids. 1-Hydroxybenzotriazole (1-Hydroxybenzotriazole, HOBT) is one of the common benzotriazole compounds. The basic information is shown in Table 1. [0003] Table 1 Basic information of HOBT [0004] [0005] Studies in recent years have found that a variety of benzo...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06
Inventor 赖华杰靳焘叶峥马倩曾瑜
Owner 中科检测技术服务(广州)股份有限公司
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