Determination method of 2‑hydroxy‑4‑methoxybenzophenone and butylmethoxydibenzoylmethane in soil

A technology of butylmethoxydibenzoylmethane and methoxybenzophenone, which is applied in the field of environmental sample detection, can solve problems such as less attention to analysis methods, and achieves improved sensitivity and accuracy, accurate quantitative results, and solvent extraction. less effect

Active Publication Date: 2018-03-23
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 products, but less attention is paid to their analytical methods in environmental media, especially soil

Method used

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  • Determination method of 2‑hydroxy‑4‑methoxybenzophenone and butylmethoxydibenzoylmethane in soil
  • Determination method of 2‑hydroxy‑4‑methoxybenzophenone and butylmethoxydibenzoylmethane in soil
  • Determination method of 2‑hydroxy‑4‑methoxybenzophenone and butylmethoxydibenzoylmethane in soil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Sample pretreatment

[0045] Collect 200g of soil samples, after freeze-drying, remove larger impurities such as stones 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 tank, press it flat, add 5.0g of quartz sand, tap the extraction tank to make the surface of the quartz sand flat, then add 5.0g of the pre-treated soil sample, after the same leveling of the sample surface, add 100μL 1mg / L internal standard working solution, add 5.0g of quartz sand, and finally put in another piece of filter paper to compress 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, it w...

Embodiment 2

[0063] (1) Sample pretreatment

[0064] Collect 200g of soil samples, after freeze-drying, remove larger impurities such as stones 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 tank, press it flat, add 5.0g of quartz sand, tap the extraction tank to make the surface of the quartz sand flat, then add 5.0g of the pre-treated soil sample, after the same leveling of the sample surface, add 100μL 1mg / L internal standard working solution, add 5.0g of quartz sand, and finally put in another piece of filter paper to compress and tighten the extraction cell. The extraction solvent was methanol / dichloromethane (60:40, v / v), the extraction temperature was 100°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, it w...

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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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Patent Type & Authority Patents(China)
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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