Method for detecting 2-hydroxyl-4-methoxybenzophenone and butyl methoxydibenzoylmethane in soil

A technology of butylmethoxydibenzoylmethane and methoxybenzophenone, which is applied in the field of environmental sample detection, can solve the problems of less attention to analysis methods, and achieves improved sensitivity and accuracy, short experiment time, and reduced The effect of matrix interference

Active Publication Date: 2017-01-25
中科检测技术服务(广州)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Current detection methods for UV absorbers mainly focus on their content in cosmetics and related

Method used

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  • Method for detecting 2-hydroxyl-4-methoxybenzophenone and butyl methoxydibenzoylmethane in soil
  • Method for detecting 2-hydroxyl-4-methoxybenzophenone and butyl methoxydibenzoylmethane in soil
  • Method for detecting 2-hydroxyl-4-methoxybenzophenone and butyl methoxydibenzoylmethane in soil

Examples

Experimental program
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Example Embodiment

[0043] Example 1

[0044] (1) Sample pretreatment

[0045] Collect 200g soil samples, freeze and dry them, remove large impurities such as rocks and plant roots and leaves, grind them evenly and pass through a 0.90mm sieve.

[0046] (2) Extraction

[0047] Put a piece of glass fiber filter paper at the bottom of the extraction cell, flatten it, add 5.0g of quartz sand, tap the extraction cell to make the surface of the quartz sand flat, then add 5.0g of the soil sample after pretreatment, and add 100μL after the sample surface is also flattened 1mg / L internal standard working solution, add 5.0g quartz sand, finally put in another filter paper and tighten the extraction cell. The extraction solvent was methanol / dichloromethane (90:10, v / v), the extraction temperature was 120°C, the static extraction time was 5 min, the nitrogen purge time was 60 s, and the static extraction cycle was 2 times. After the extract was evaporated to dryness with a rotary evaporator, the volume was reconst...

Example Embodiment

[0062] Example 2

[0063] (1) Sample pretreatment

[0064] Collect 200g soil samples, freeze and dry them, remove large impurities such as rocks and plant roots and leaves, grind them evenly and pass through a 0.90mm sieve.

[0065] (2) Extraction

[0066] Put a piece of glass fiber filter paper at the bottom of the extraction cell, flatten it, add 5.0g of quartz sand, tap the extraction cell to make the surface of the quartz sand flat, then add 5.0g of the soil sample after pretreatment, and add 100μL after the sample surface is also flattened 1mg / L internal standard working solution, add 5.0g quartz sand, finally put in another filter paper and tighten the extraction cell. The extraction solvent is methanol / dichloromethane (60:40, v / v), the extraction temperature is 100°C, the static extraction time is 5 min, the nitrogen purge time is 60 s, and the static extraction cycle is 2 times. After the extract was evaporated to dryness with a rotary evaporator, the volume was reconstitute...

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Abstract

The invention provides a method for detecting 2-hydroxyl-4-methoxybenzophenone and butyl methoxydibenzoylmethane. According to the method provided by the invention, a quick and efficient extraction method with a high recovery rate is established by using an accelerated solvent extraction technology, then detection is performed by using a high-performance liquid chromatography-mass chromatography, and quantification is performed by using an internal standard method, so that the 2-hydroxyl-4-methoxybenzophenone and butyl methoxydibenzoylmethane in soil are effectively analyzed and detected. The average recovery rates of the 2-hydroxyl-4-methoxybenzophenone and the butyl methoxydibenzoylmethane are 95.1-93.3% and 92.7-93.2%, the detection limit is less than 1.0ng/g, the quantification limit is less than 2.0ng/g, and the method is high in recovery rate, high in sensitivity and good in repeatability and can be used for detecting 2-hydroxyl-4-methoxybenzophenone and butyl methoxydibenzoylmethane in soil.

Description

technical field [0001] The invention belongs to the field of environmental sample detection, in particular to a method for detecting 2-hydroxy-4-methoxybenzophenone and butylmethoxydibenzoylmethane in soil. Background technique [0002] Sunscreen cosmetics are one of the must-have cosmetics for people nowadays, and its sunscreen effect mainly comes from the ultraviolet absorber therein. According to the principle of sunscreen, sunscreens can be divided into physical sunscreens and chemical sunscreens. Among them, physical sunscreens are opaque, mainly relying on reflection and scattering to shield ultraviolet rays for sun protection; while chemical sunscreens are transparent, can absorb ultraviolet rays, and then release them with low-energy rays to achieve the purpose of sun protection. There are many applications. These substances usually contain one or more aromatic rings or structures, which are connected by carbon-carbon double bonds or acyl groups to form a conjugated...

Claims

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Application Information

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IPC IPC(8): G01N30/88G01N30/06
CPCG01N30/06G01N30/88G01N2030/062G01N2030/884
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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