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| Improvement of Formaldehyde Analysis in Cosmetic Products by a Dual wavelength Spectroscopy |
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| DOI： |
| KeyWord:cosmetics formaldehyde dual wavelength visible spectrometry |
| Author | Institution |
| YAN Ning，ZHANG Shu-xin， CHAI Xin-sheng* |
1.华南理工大学制浆造纸工程国家重点实验室;2.国家纸制品质量监督检验中心 |
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| Abstract: |
| In this paper，a method was presented for the determination of formaldehyde in cosmetics based on a dual wavelength spectroscopy，in which both absorbances at 414 nm and 500 nm were used.The results showed that the relative standard deviation(RSD) of the method is only 0.46%，while it is 11.5% by the single wavelength method.The limit of quantitation(LOQ) of the dual wavelength method is 7.4 mg/kg.The present method is sensitive and accurate,and is suitable for the the determination of low content formaldehyde in cosmetic products. |
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