Microwave induced plasma desorption ionization (MIPDI) mass spectrometry for qualitative and quantitative analysis of preservatives in cosmetics

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 40636-40646 ◽  
Author(s):  
Zhongjun Zhao ◽  
Yixiang Duan
Keyword(s):  
Mass Spectrometry ◽  
Quantitative Analysis ◽  
Qualitative And Quantitative Analysis ◽  
Qualitative And Quantitative ◽  
Microwave Induced Plasma ◽  
Desorption Ionization ◽  
Plasma Desorption ◽  
First Time

The quantitative and qualitative behaviors of the MIPDI source were systematically studied for the first time in this work.

scholarly journals Determination of Flavonoids Compounds of Three Species and Different Harvesting Periods in Crataegi folium Based on LC-MS/MS

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1602
Author(s):  
Ya-Ping Guo ◽  
Hong Yang ◽  
Ya-Li Wang ◽  
Xiao-Xiang Chen ◽  
Ke Zhang ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Qualitative Analysis ◽  
Quantitative Method ◽  
Total Content ◽  
Qualitative And Quantitative Analysis ◽  
Pharmacological Activities ◽  
Time Saving ◽  
Qualitative And Quantitative ◽  
First Time

Crataegi folium have been used as medicinal and food materials worldwide due to its pharmacological activities. Although the leaves of Crataegus songorica (CS), Crataegus altaica (CA) and Crataegus kansuensis (CK) have rich resources in Xinjiang, China, they can not provide insights into edible and medicinal aspects. Few reports are available on the qualitative and quantitative analysis of flavonoids compounds of their leaves. Therefore, it is necessary to develop efficient methods to determine qualitative and quantitative flavonoids compounds in leaves of CS, CA and CK. In the study, 28 unique compounds were identified in CS versus CK by qualitative analysis. The validated quantitative method was employed to determine the content of eight flavonoids of the leaves of CS, CA and CK within 6 min. The total content of eight flavonoids was 7.8–15.1 mg/g, 0.1–9.1 mg/g and 4.8–10.7 mg/g in the leaves of CS, CA and CK respectively. Besides, the best harvesting periods of the three species were from 17th to 26th September for CS, from 30th September to 15th October for CA and CK. The validated and time-saving method was successfully implemented for the analysis of the content of eight flavonoids compounds in CS, CA and CK for the first time.

Sample preparation approaches for qualitative and quantitative analysis of lipid-derived electrophile modified proteomes by mass spectrometry

2020 ◽  
Vol 16 (6) ◽  
pp. 511-520
Author(s):  
Wenjuan Yuan ◽  
Jun Wang ◽  
Ying Zhang ◽  
Haojie Lu
Keyword(s):  
Mass Spectrometry ◽  
Quantitative Analysis ◽  
Sample Preparation ◽  
Analytical Methods ◽  
Qualitative And Quantitative Analysis ◽  
Qualitative And Quantitative

MS-based analytical methods of lipid-derived electrophile modified proteome are discussed in this review.

Microwave-Induced Plasma Desorption/Ionization Source for Ambient Mass Spectrometry

2013 ◽  
Vol 85 (9) ◽  
pp. 4512-4519 ◽  
Author(s):  
Xuefang Zhan ◽  
Zhongjun Zhao ◽  
Xin Yuan ◽  
Qihui Wang ◽  
Dandan Li ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Ambient Mass Spectrometry ◽  
Ionization Source ◽  
Microwave Induced Plasma ◽  
Desorption Ionization ◽  
Plasma Desorption
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