Which spectroscopic technique allows the best differentiation of coffee varieties: comparing principal component analysis using data derived from CD-, NMR- and IR-spectroscopies and LC-MS in the analysis of the chlorogenic acid fraction in green coffee beans
期刊论文
摘要:
In this contribution we have analysed aqueous methanolic extracts of a total of 38 green bean coffee...
Determination of trace amounts of Pb, Cd, Ni and Co by wavelength-dispersive X-ray fluorescence spectrometry after preconcentration with dithizone functionalized graphene
期刊论文
摘要:
In this paper, a new simple and sensitive method is developed for the preconcentration of trace amou...
Facile synthesis of hierarchical MCM-41 spheres with an ultrahigh surface area and their application for removal of methylene blue from aqueous solutions
期刊论文
摘要:
Hierarchical mesoporous silica spheres (HS) were prepared by a simple sol芒鈧€済el method and used for...