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The aim of this work was to give more accurate insight in the interaction of   major photosynthesis pigment, chlorophyll (Chl), with copper (II) and zinc   (II) in solution by flow injection analysis with electrospray ionization mass   spectrometry (FIA-ESI-MS) method, as well as combined with ultra high   performance liquid chromatography with DAD detection (UHPLC-DAD). These   interactions may potentially, but not necessarily lead to formation of Cu-Chl   and Zn-Chl complexes of two different types, which has a lot of - at least -   disfunctional implications in plant world. The results based on analysis of   full-scan and MS/MS spectra - with or without the UHPLC chromatograms -   confirm formation of “central type” Cu-Chl complex, and “central type” Zn-Chl   complex as well, along with a proof for formation of “peripheral” Zn-Chl   complex, the latter one originating from a very week coordinative interaction   at the edge of Chl structure. The used techniques appeared to be an efficient   and reliable tool for studying formation and stability of heavy metals   complexes with chlorophyll, at least in vitro, with a considerable   possibility for assessment of real bio-environmental behavior. [Projekat   Ministarstva nauke Republike Srbije, br. TR-34012 i br. OI-172044

journal of the serbian chemical society

Electrospray ionization mass spectrometry combined with the ultra high performance liquid chromatography in the analysis of in vitro formation of chlorophyll complexes with copper and zinc