气相色谱法测定淋洗类化妆品中的硅氧烷类物质

doi:10.3969/j.issn.1001-1803.2021.07.016

Abstract

Abstract:

A method of GC-FID was used for the analysis of D4, D5, D6 and their analogs D3, D7, D8 in cosmetics. The samples were extracted, filtered and analyzed by gas chromatography, and quantified by external standard method. The results show that there is a good linearity between the peak area and the concentration of six cyclic siloxane in the range of 5-200 mg/L with the r values higher than 0.998. The detection limits for six cyclic siloxane are 0.002%, and the limits of quantification are 0.005%. The average recoveries of six cyclic siloxane in shampoo,conditioner,shaving cream, bath gel and cleanser are 77.1%-104.2%, 72.1%-106.9%, 71.5%-112.6%, 73.3%-118.7%, and 74.8%-104.6%, respectively. The method is simple, efficient, sensitive and reliable, and is suitable for the general detection of six cyclic siloxane in various kinds of rinse-off cosmetics. It can provide technical support for the protection of the global environment and human health.

Key words: rinse-off cosmetics, methylcyclosiloxane, gas chromatography

CLC Number:

TQ658

Wen Xiaojing,Tang Huang,Zhao Yuanyu,Chen Jiang,Hu Dongping,Wang Guomin. Determination of methylcyclosiloxane in rinse-off cosmetics by gas chromatography[J].China Surfactant Detergent & Cosmetics, 2021, 51(7): 691-696.

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References 8

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化合物	线性范围/（mg·L^-1）	线性方程	相关系数	以样品计质量分数/%
D3	5~200	y=0.708 6x+1.420	0.998 9	0.005~0.2
D4	5~200	y=0.763 6x+1.540	0.998 9	0.005~0.2
D5	5~200	y=0.749 1x+1.548	0.998 9	0.005~0.2
D6	5~200	y=0.725 2x+1.559	0.999 0	0.005~0.2
D7	5~200	y=0.772 5x+1.530	0.998 9	0.005~0.2
D8	5~200	y=0.617 3x+1.227	0.999 0	0.005~0.2

成分	添加量/%	洗发水		护发素		剃须膏		沐浴乳		洁面乳
成分	添加量/%	回收率/%	RSD/%	回收率/%	RSD/%	回收率/%	RSD/%	回收率/%	RSD/%	回收率/%	RSD/%
D3	0.005	77.1	0.5	74.6	3.8	72.4	3.6	73.3	0.2	74.8	4.8
	0.01	80.2	2.2	88.6	0.5	82.3	4.9	85.3	1.9	82.2	0.3
	0.1	92.8	5.5	104.4	0.3	103.4	7.5	107.4	0.9	90.6	0.2
D4	0.005	87.9	0.6	74.7	0.5	79.8	1.7	85.1	3.1	91.8	2.4
	0.01	83.2	6.7	90.6	1.4	88.7	2.4	93.9	4.5	98.2	1.4
	0.1	97.6	2.2	106.7	0.4	106.5	5.6	110.7	0.9	96.3	0.2
D5	0.005	96.1	2.4	72.3	1.9	71.5	2.3	86.9	7.7	95.7	0.3
	0.01	81.9	4.5	90.2	0.3	87.0	1.8	95.7	5.4	95.5	0.5
	0.1	100.8	5.3	106.9	0.4	96.5	1.4	118.7	0.2	93.1	0.3
D6	0.005	104.2	4.1	72.1	1.7	75.6	7.7	74.1	1.7	82.8	2.6
	0.01	83.3	5.7	90.7	2.2	90.6	1.7	86.8	3.4	89.6	1.4
	0.1	99.3	5.3	106.9	0.4	112.6	9.2	111.0	0.6	91.4	0.3
D7	0.005	83.2	2.1	72.6	2.0	75.8	2.3	85.8	5.9	90.9	2.6
	0.01	80.2	1.2	91.5	1.4	84.8	0.9	98.4	3.1	92.9	4.1
	0.1	95.1	5.5	103.3	0.4	105.4	8.9	108.9	0.8	92.6	0.2
D8	0.005	83.1	1.8	77.6	2.2	87.9	5.0	93.8	2.2	104.6	2.7
	0.01	80.2	2.2	91.9	3.4	95.2	1.9	88.4	4.8	100.2	1.9
	0.1	97.6	5.9	97.1	0.4	107.4	8.2	104.7	0.9	90.5	0.4

产品	数量/个	D4	D5	D6	D7	D8
洁面产品	4	均未检出	1个检出,0.002 8%	均未检出	1个检出,0.002 0%	1个检出,0.007 4%
洗发产品	12	8个检出, 0.003 2%~0.018 9%	3个检出, 0.004 1%~0.007 7%	2个检出, 0.004 5%和0.004 8%	2个检出, 0.004 2%和0.002 5%	5个检出, 0.002 8%~0.010 5%
护发产品	9	4个检出, 0.002 1%~0.013 9%	3个检出, 0.002 2%~0.987 6%	4个检出, 0.002 9%~0.023 1%	4个检出, 0.0021%~0.0141%	2个检出, 0.014 1%和0.005 7%

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Determination of methylcyclosiloxane in rinse-off cosmetics by gas chromatography

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