Nicola Senesi

TL;DR: Theoretical aspects of the possible occurrence of electron donor-acceptor processes involving free radical intermediates and leading to stable charge transfer complexes between electron donor herbicides and acceptor quinone-like units of humic acids have been discussed on the basis of similar mechanisms occurring on biological scale in the chloroplasts.

TL;DR: In this article, the effects over a wide pH range of oxidation, reduction and irradiation on free radical concentrations of fulvic acid (FA) solutions and the reversibility of these reactions were investigated by i.s.r. and visible spectrophotometry and by e.g. spectrometry.

TL;DR: In this paper, the potential anticlastogenic and antitoxic effects of a soil humic acid (HA), a peat HA and peat fulvic acid (FA) on the mutagen maleic hydrazide (MH) have been investigated in two legume species, Vicia faba and Pisum sativum.

TL;DR: In this article, high-purified humic acid (HA) samples extracted from five paleosols collected in Southern Italy, ranging in radiocarbon age from about 14,000 to 29,000 yr BP, were analysed by Inductively Coupled Argon Plasma Optical Emission Spectrometry (ICAP-OES), Infrared, (IR) and Electron Spin Resonance (ESR) spectroscopy for their total contents and chemical forms of some transition metals.

TL;DR: The adsorption capacity of SHA for the three allelochemicals was small and decreased in the order FA > CA > SA, thus suggesting that adsorbption could be a relevant mechanism, but not the only one, involved in the "antiallelopathic" action.