نتایج جستجو برای: humic substances
تعداد نتایج: 59857 فیلتر نتایج به سال:
© The Author(s) 2015 A. Arques and A. Bianco Prevot (eds.), Soluble Bio-based Substances Isolated From Urban Wastes, SpringerBriefs in Green Chemistry for Sustainability, DOI 10.1007/978-3-319-14744-4_2 Abstract Soluble bio-based substances (SBO) extracted from urban bio-wastes have similar chemical properties to humic substances (HS) present in natural waters and soils. Therefore, SBO are also...
The review summarizes studies on the detoxification effects of water-soluble humic substances (HS), which are products natural transformation organic in soils and bottom sediments that serve as detoxifying agents water solutions. HS microorganisms quite complex: neutralize free pollutants (indirect bioeffects) also stimulate protective response organisms (direct bioeffects). Prospects potential...
Models for humic and fulvic acids are discussed based on 13 C liquid state NMR spectra combined with results from elemental analysis and titration studies. The analysis of NMR spectra is based on a full reconstruction of the NMR spectrum done with help of 13 C-NMR data bases by adding up chemical shifts of all substructures from the proposed models. A full reconstruction makes sure that all car...
Marine dissolved organic matter (DOM) is one of the largest reservoirs of reduced carbon on Earth. In the dark ocean (4200m), most of this carbon is refractory DOM. This refractory DOM, largely produced during microbial mineralization of organic matter, includes humic-like substances generated in situ and detectable by fluorescence spectroscopy. Here we show two ubiquitous humic-like fluorophor...
Farmers usually apply more chemical fertilizers to enhance the yield of strawberries in soilless culture. Humic substances and biofertilizers are now considered essential nutrient sources sustainable agriculture. The objective greenhouse experiment was observe effect humic fulvic acid (humic substances), biofertilizer on root growth, nitrogen (N) phosphor (P) growing media, populations N-fixing...
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