Method for the detection of 3-benzylidene camphor and 4-methylbenzylidene camphor in consumer products

Abstract

The invention discloses a method for detecting 3-benzylidene-camphor and 4-methyl benzyl subunit camphor in consumer goods. The method includes steps of carrying out sampling, to be more specific, pretreating targets and detecting the contents of the 3-benzylidene-camphor and the 4-methyl benzyl subunit camphor in the pretreated targets. Pretreatment steps include mixing samples and an extracting agent with one another at first specified temperatures and carrying out ultrasonic extraction for the specified time; adding a purifying agent into first extraction products at the first specified temperatures and carrying out ultrasonic extraction for the specified time; cooling second extraction products until the temperatures of the second extraction products reach the room temperature and then filtering the second extraction products. The method for detecting the 3-benzylidene-camphor and the 4-methyl benzyl subunit camphor in the consumer goods has the advantages that the detection limit can reach 0.003%; the test accuracy of the samples can be improved by the aid of the pretreatment steps; tetrahydrofuran and acetone mixed liquid is used as the extracting agent, acetonitrile is used as the purifying agent, accordingly, the targets can be thoroughly extracted from products, and extraction procedures are speedy owing to ultrasonic extraction.

Description

technical field [0001] The invention relates to the detection field, in particular to a method for detecting 3-benzylidene camphor and 4-methylbenzylidene camphor in consumer products. Background technique [0002] 3-(4-methylbenzylidene) camphor and 4-methylbenzylidene camphor are anti-ultraviolet sunscreens, because ultraviolet sunscreens can cause skin dermatitis, allergies, photosensitivity, and long-term growth of biological endocrine The side effects of interference can lead to a series of diseases. Relevant studies have shown that 3-benzylidene camphor has an environmental accumulation effect, and can enter the food chain through bioaccumulation, and interfere with endocrine, posing a threat to human health. The substances of very high concern updated by the EU on February 29, 2016 included 3-benzylidene camphor and 4-methylbenzylidene camphor, so people are paying more and more attention to this type of residue. [0003] As a common daily necessities, plastic will r...

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Problems solved by technology

[0002] 3-(4-methylbenzylidene) camphor and 4-methylbenzylidene camphor are anti-ultraviolet sunscreens, because ultraviolet sunscreens can cause skin dermatitis, allergies, photosensitivity, and long-term growth of biological endocrine The side effects of interference can lead to a series of diseases. Relevant studies have shown that 3-benzylidene camphor has an environmental cumulative effect and can enter the food chain through bioaccumulation. It also interferes with endocrine and poses a threat to human health.

[0004] However, in the existing test methods, the sampling requirements, pretreatment requirements, and instrument requirements for samples are not clearly given, which makes the test results have a large error, and it is very difficult to formulate a unified test standard

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