Features of accumulation of sulfur and phosphorus by phytoremediants from technogenically polluted wastewater of mining enterprises

The article presents data on the accumulation of phosphorus and sulfur in the tissues of phytoremediant plants Phragmites australis (Cav.) Trin. ex Steud., Typha angustifolia L., Typha latifolia L., used for the treatment of technogenically polluted wastewater from mining enterprises. The dynamics of changes in digital biomass and normalized chlorophyll ratio index during systematic exposure to mine wastewater is shown. Species have been identified that respond to anthropogenic influence by increasing leaf mass and activating the photosynthetic system of plants. The high degree of phytoextraction of phosphorus and sulfur by Phragmites australis allows us to recommend this species for the production of green fertilizers based on it

The atmospheric continuum in the “terahertz gap” region (15–700 cm−1): Review of experiments at SOLEIL synchrotron and modeling

International audienceThe results of our recent water vapor related continuum studies in the range of the "terahertz gap" at the AILES beam line of the SOLEIL synchrotron using Fourier transform spectrometer are reviewed and summarized. The continuum of pure water vapor and its mixture with N 2 , O 2 and dry air were investigated in the 15-700 cm-1 range in conditions close to atmospheric. Analysis of the frequency and temperature dependence of the selfcontinuum revealed a significant contribution of stable water dimer to the observed absorption, which is not taken into account by the MT_CKD semi-empirical model of the continuum, widely used for atmospheric applications. We propose a physically based approach for the continuum modeling, which accounts explicitly for the contribution of dimers and far wings of monomer resonance lines. We applied the suggested approach for the water vapor self-continuum modeling in the H 2 O rotational band and sustained it by comparison to the SOLEIL data. The frequency dependence of the relative contributions of far wings, stable and metastable dimers to the self-continuum is evaluated. Prospects for further developments of the atmospheric continuum modeling are given

The water vapor self-continuum in the “terahertz gap” region (15–700 cm−1): Experiment versus MT_CKD-3.5 model

International audienceRecently reviewed results of studies on the water vapor related continuum in the range of "terahertz gap" are compared with the current version of the MT_CKD model (v.3.5) instead of version 3.2, which was outdated at the time of submission. The MT_CKD-3.5 model reproduces the available experimental data in the range of 3.5-700 cm-1 much better than its previous versions

The O2 far-infrared absorption spectrum between 50 and 170 cm-1

International audienc