During a systematic study of monofluorophosphates, i.e., compounds comprising the tetrahedral anion PO3F2?, twelve, for most part new, were obtained from aqueous solutions. Crystal structure refinements based on single crystal X-ray diffraction data revealed previously unknown structures CdPO3F(H2O)2, Cr2(PO3F)3(H2O)18.8, Pb2(PO3F)Cl2(H2O), (NH4)2M(PO3F)2(H2O)2 (M = Mg, Mn, Co), NH4Cr(PO3F)2(H2...

Picoplankton populations dominate the planktonic community in surface oligotrophic ocean. Yet, their strategies acquisition and partitioning of organic inorganic sources nitrogen (N) carbon (C) are poorly described. Here, we measured at single-cell level uptake dissolved C (C-fixation), C-leucine, N-leucine, nitrate (NO3?), ammonium (NH4+), N-urea pigmented nonpigmented picoplankton groups six ...

Quantification of the Nitrogen (N)-supplying capacity of organic manures provides an important insight into more effective N management practices. The aims of this study were to determine the potential N mineralization of cow manure (CM), poultry manure (PM), urea fertilizer (UF) and the combined use of cow manure + urea fertilizer (CM + UF) for silage maize (Zea mays L.) in a calcareous so...

Anthropogenic activities are altering total nutrient loads to many estuaries and freshwaters, resulting in high loads not only of total nitrogen (N), but in some cases, of chemically reduced forms, notably NH4 . Long thought to be the preferred form of N for phytoplankton uptake, NH4 may actually suppress overall growth when concentrations are sufficiently high. NH4 has been well known to be in...

The invention of technical N2 fixation (TNF) opened the way to fertilize urea, NH4+, NO3 plant demands surpassing. An enchased the production sites from the thermodynamic equilibrium moving away and yields significantly increasing soil organic matter (SOM) conversion promotes nitrification through NH4+ and CO2 availability in higher amounts. Mobile NO3 ions in access formed dislocate towards gr...

Abiotic nitrogen reduction (ANR) in hydrothermal systems has been long considered as the most likely mechanism to transform N2, the dominant N species on the pre-life Earth’s surface, into NH4+, an essential compound for abiotic synthesis of large organic molecules facilitating the emergence of life in the early oceans [1]. Mineral-induced ANR process has been demonstrated by laboratory experim...

The photochemical release of inorganic nitrogen from dissolved organic matter is an important source of bio-available nitrogen (N) in N-limited aquatic ecosystems. We conducted photochemical experiments and used mathematical models based on pseudo-first-order reaction kinetics to quantify the photochemical transformations of individual N species and their seasonal effects on N cycling in a moun...

Uptake of nutrients and organic C was measured once annually between 2000 and 2002 in each of 10 streams within the water-supply source areas for New York City. Nutrients (PO4 3– and NH4 þ) and organic C (glucose and arabinose) were injected into the streams for 1 to 2 h, and uptake lengths were estimated from the longitudinal declines in downstream concentration relative to that of a conservat...