发明名称 |
METHOD FOR MONITORING LEVEL OF PARABEN IN COSMETICS |
摘要 |
The invention discloses a method for monitoring level of paraben comprising: dissolving a sample in a solvent and obtaining a supernatant containing paraben by ultrasonic vibration and high speed centrifugation; performing a derivatization reaction between a derivatization reagent and paraben by adding the derivatization reagent into the supernatant to obtain a derivatization solution containing a tagged paraben; extracting the derivatization solution by an extractant to obtain an extract containing the tagged paraben; and ionizating the tagged paraben by a laser beam and analyzing mass-to-charge ratio of the tagged paraben by an analyzer to determine molecular weight thereof. |
申请公布号 |
US2016020077(A1) |
申请公布日期 |
2016.01.21 |
申请号 |
US201414646983 |
申请日期 |
2014.01.09 |
申请人 |
KAOHSIUNG MEDICAL UNIVERSITY |
发明人 |
LU Chi-Yu;LEE Yi-Hsuan |
分类号 |
H01J49/00;H01J49/16 |
主分类号 |
H01J49/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
Kaohsiung City, TAIWAN CN |