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A kind of detection method of carla flower aldehyde in detergent

A technology for the detection of carrageenal and its detection method, which is applied in the field of chemical and commodity inspection, and achieves the effects of good method stability, increased sample weighing, and short pretreatment time

Inactive Publication Date: 2019-10-15
丁立平 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems such as lack of detection method of caralalin in detergents and the deficiencies in the prior art at present, the present invention proposes a detection method of carlathin in detergents

Method used

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  • A kind of detection method of carla flower aldehyde in detergent
  • A kind of detection method of carla flower aldehyde in detergent
  • A kind of detection method of carla flower aldehyde in detergent

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Experimental program
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Effect test

Embodiment 1

[0029] The matrix sample is washing powder

[0030] 1 Sample preparation and weighing:

[0031] 1.1 Sample preparation

[0032] Laundry powder sample mixed. Put it in a clean container, keep it airtight, mark it, and store it at low temperature.

[0033] 1.2 Sample weighing

[0034] Accurately weigh 1.00 g of the sample (accurate to 0.001 g) in a 50 mL stoppered centrifuge tube for pretreatment.

[0035] 2 Sample pretreatment:

[0036] Add 20mL of methanol to the above-mentioned centrifuge tube that has been weighed, vortex 1mim, ultrasonically extract for 30min, add 1.00g of lead acetate solid, vortex for 1min, add 15mL of n-hexane, shake for 15min, and centrifuge at 4500r / min for 3min, collect all the above The supernatant was evaporated to dryness at 40°C, added 2.00 mL of acetone to constant volume, and passed through a 0.22 μm filter membrane for analysis. 3 Chromatography-mass spectrometry detection conditions:

[0037] 3.1 Chromatographic column: DB-5MS capillary...

Embodiment 2

[0078] The sample matrix is ​​the washing solution

[0079] 1 Sample preparation and weighing:

[0080] 1.1 Sample preparation

[0081] Wash solution samples were mixed. Put it in a clean container, keep it airtight, mark it, and store it at low temperature.

[0082] 1.2 Sample weighing

[0083] Accurately weigh 2.00 g of the sample (accurate to 0.001 g) in a 50 mL stoppered centrifuge tube for pretreatment.

[0084] 2 Sample pretreatment:

[0085] Add 30mL of methanol to the above-mentioned centrifuge tube that has been weighed, vortex and mix to extract 3mim, add 2.00g of lead acetate solid, vortex for 1min, add 20mL of n-hexane, shake for 15min, rotate at 2500r / min for 3min, and collect all supernatant Liquid, rotary evaporated to dryness at 50°C, added 2.00mL xylene to constant volume, passed through a 0.45μm membrane filter for analysis.

[0086] 3 Chromatography-mass spectrometry detection conditions:

[0087] 3.1 Chromatographic column: DB-5MS capillary column, 3...

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Abstract

The invention relates to a method for detecting karanal in a washing product, and belongs to the technical field of chemical and commodity inspection .The method comprises the steps of sample preparation, sample pretreatment, sample detecting confirmation and detecting result calculating and presenting. Solid, semisolid and powdery samples are subjected to supersonic extraction with methyl alcohol or acetonitrile, lead acetate is used for precipitating and purifying a matrix, and normal hexane liquid is concentrated, sized and analyzed after extraction. Liquid samples are mixed to be uniform through volution for extraction, lead acetate is used for precipitating and purifying a matrix, volution is carried out, and normal hexane liquid is concentrated, sized and analyzed after extraction. The method has the advantages of being short in pretreatment time, high in efficiency, good in method stability and the like, and the fast detection requirements of karanal in the washing product can be met. Meanwhile, the set standard requirement put forward by Certification and Accreditation Administration is met and exceeded on the aspect of limit of detection, reproducibility and other indexes inspected by the technology, and the method can become an alternative of the industrial standard method.

Description

technical field [0001] The invention belongs to the technical field of chemicals and commodity inspection, and more specifically relates to a method for detecting carrageenal in washing products. Background technique [0002] Carrageenal, also known as 2-(2,4-dimethyl-3-cyclohexyl)-5-methyl-5-(1-methylpropyl)-1,3-dioxane, the molecular formula is :C 17 h 30 o 2 , CAS registration number: 117933-89-8, is a colorless transparent liquid with a density of 0.928g / cm3, a boiling point of 329.9°C at 101kpa, a flash point of 165.8°C, a vapor pressure of 0.000044023kpa at 25°C, and is difficult to volatilize. Carla flower aldehyde is a raw material with dry ambergris fragrance and excellent fabric fragrance retention ability. It is widely used in toys, textiles, soap, washing powder, fabric softener and other daily products. Due to the high persistence and high bioaccumulation of this substance, which may cause harm to the human body and the environment, the EU REACH regulation h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/06G01N30/88
Inventor 丁立平陈学灿蔡春平张睿
Owner 丁立平
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