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Method for detecting formaldehyde in nail polish

A detection method, nail polish technology, applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of phenolic substances interference, tedious and time-consuming sample pretreatment method, etc., achieve high accuracy, increase detection accuracy, and good repeatability Effect

Inactive Publication Date: 2017-11-24
安徽宏远职业卫生技术服务有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In "Hygienic Standards for Cosmetics", acetylacetone spectrophotometry is used to determine formaldehyde in cosmetics. This method has good stability, but the sample pretreatment method is cumbersome and time-consuming. There are domestic literature reports on the application of chromotropic acid spectrophotometry to the determination of formaldehyde in cosmetics. The method is simple, but it is easily interfered by phenolic substances

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  • Method for detecting formaldehyde in nail polish
  • Method for detecting formaldehyde in nail polish

Examples

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Embodiment 1

[0021] A method for detecting formaldehyde in nail polish, comprising the steps of:

[0022] S1. Preparation of control solutions: take formaldehyde standard solutions with concentrations of 0.05, 0.1, 0.2, 0.4, 0.8, and 1.0mmol / L, respectively, and add them to the aqueous solution of hydroxylamine hydrochloride with a concentration of 2mmol / L, stir and mix for 20min to obtain controls with different concentrations solution, the volume ratio of each formaldehyde standard solution to hydroxylamine hydrochloride aqueous solution is 1:1;

[0023] S2, drawing a standard curve: use a UV spectrophotometer to detect the absorbance of different concentrations of the control solution in S1 at a wavelength of 203nm and draw a standard curve;

[0024] S3. Preparation of sample solution: add nail polish to water and mix evenly, sonicate for 50 minutes, and centrifuge to get the supernatant, wherein the weight-to-volume (g / ml) ratio of nail polish to water is 1:80; take the supernatant and...

Embodiment 2

[0027] A method for detecting formaldehyde in nail polish, comprising the steps of:

[0028] S1. Preparation of control solutions: take formaldehyde standard solutions with concentrations of 0.05, 0.1, 0.2, 0.4, 0.8, and 1.0mmol / L, respectively, and add them to the aqueous solution of hydroxylamine hydrochloride with a concentration of 4mmol / L, stir and mix for 10min to obtain controls with different concentrations solution, the volume ratio of each formaldehyde standard solution to hydroxylamine hydrochloride aqueous solution is 1:1;

[0029] S2, drawing a standard curve: use a UV spectrophotometer to detect the absorbance of different concentrations of the control solution in S1 at a wavelength of 207nm and draw a standard curve;

[0030] S3. Preparation of sample solution: add nail polish to water and mix evenly, sonicate for 30 minutes, and centrifuge to get the supernatant, wherein the weight-to-volume (g / ml) ratio of nail polish to water is 1:100; take the supernatant an...

Embodiment 3

[0033] A method for detecting formaldehyde in nail polish, comprising the steps of:

[0034] S1. Preparation of control solution: take formaldehyde standard solutions with concentrations of 0.05, 0.1, 0.2, 0.4, 0.8, and 1.0mmol / L, respectively, and add them into the aqueous solution of hydroxylamine hydrochloride with a concentration of 2.5mmol / L, stir and mix for 18min to obtain different concentrations of formaldehyde For the control solution, the volume ratio of each formaldehyde standard solution to hydroxylamine hydrochloride aqueous solution is 1:1;

[0035] S2, drawing a standard curve: use a UV spectrophotometer to detect the absorbance of different concentrations of the control solution in S1 at a wavelength of 204nm and draw a standard curve;

[0036] S3. Preparation of sample solution: add nail polish to water and mix evenly, sonicate for 45 minutes, and centrifuge to get the supernatant, wherein the weight-to-volume (g / ml) ratio of nail polish to water is 1:85; tak...

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Abstract

The invention discloses a method for detecting formaldehyde in nail polish. The method comprises the following steps: S1, preparing a control solution, namely respectively adding formaldehyde standard solutions of different concentrations into a hydroxylamine hydrochloride solution, and stirring and mixing uniformly for 10-20 minutes so as to obtain control solutions of different concentrations; S2, drawing standard curves, namely detecting absorbancy of the control solutions of different concentrations in the step S1 by using an ultraviolet spectrophotometer, and drawing standard curves; S3, preparing a sample solution, namely uniformly mixing nail polish with water, performing ultrasonic treatment for 30-50 minutes, centrifuging so as to obtain supernate, putting the supernate into a hydroxylamine hydrochloride solution, and stirring and mixing uniformly for 10-20 minutes so as to obtain a sample solution; and S4, detecting the sample solution, namely detecting the absorbancy of the sample solution obtained in the step S3 by using the ultraviolet spectrophotometer, and calculating the concentration of formaldehyde in the sample solution according to a standard curve external standard method. The method is simple to operate and free of interference of phenolic substances.

Description

technical field [0001] The invention relates to the technical field of formaldehyde detection, in particular to a method for detecting formaldehyde in nail polish. Background technique [0002] Formaldehyde is a bactericidal preservative commonly used in cosmetics, but formaldehyde has an important impact on human health. It has a strong irritating effect on the eyes, respiratory tract, and skin, and can cause symptoms such as tearing, nausea, vomiting, chest tightness, and general weakness. Long-term exposure to low doses Formaldehyde can cause chronic respiratory diseases, memory loss, chromosomal abnormalities, and immune function abnormalities. Therefore, it is necessary to monitor the content of formaldehyde in cosmetics. [0003] In "Hygienic Standards for Cosmetics", acetylacetone spectrophotometry is used to determine formaldehyde in cosmetics. This method has good stability, but the sample pretreatment method is cumbersome and time-consuming. There are domestic lit...

Claims

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Application Information

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IPC IPC(8): G01N21/33
CPCG01N21/33
Inventor 夏怀翔赵华芝孔玉萍严章飞方栋张强段志祥
Owner 安徽宏远职业卫生技术服务有限公司
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