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filters
The qualitative composition and concentrations of volatile organic compounds released from FPP, FPP/S, and FPM polymeric filter materials of Petryanov filters into air under static and dynamic conditions at 20 and 50°C were determined.
      
Chlorinated hydrocarbons, trichloroacetaldehyde, styrene, ethyl acetate, and n-butyl acetate were detected as the constituents of the air (headspace) phase over the FPP, FPP/S, and FPM materials of Petryanov filters.
      
Thin-Layer Cellulose Filters for the Preconcentration of Elements from Solutions
      
Filters for the Preconcentration of Elements from Solutions
      
The matrix of the filters is cellulose, synthetic polymers of the linear and branched structures, synthetic fibers, reversed-phase silica gels, foamed polyurethanes, etc.
      
Methods for the determination of elements in different samples including preconcentration on filters are considered.
      
Matrices containing certified neutral-density glass filters and Congo Red in different concentrations were used.
      
Filters with pore size 4.5 μm (filters II) retained up to 20% of SOM and 20-30% of bacterial cells.
      
Filters III with pore size 2.87 μm retained almost 50% of SOM and about 40% of bacteria.
      
Oxygen consumption rates per one bacterial cell and per unit biomass in filtrates increased with decreasing pore size of the filters through which they had passed.
      
brasilenseSp7(S) lectin to the extracellular polysaccharide-containing complexes of this strain was revealed by dot immunoblotting on nitrocellulose membrane filters.
      
The method of membrane filters was used to study the population dynamics of bacteria belonging to the genera Arthrobacter, Flavobacterium, and Klebsiella in barley (Hordeum vulgare) rhizosphere under conditions of cadmium stress (5-15 mg Cd/g soil).
      
The development of Fusarium culmorum and Pseudomonas fluorescens in soil, and the relations between them, were studied using membrane filters containing the fungus, the bacterium, or both microorganisms; the filters were incubated in soil.
      
Daily aerosol samples (3500 m3/d) were collected onto glass-fiber filters with an aerosol sampler having an aerodynamic cutoff diameter of 10-15 μm depending on the wind speed.
      
The filters were analysed for 7Be with an electrically cooled HPGe γ-ray spectrometer and for 210Pb with α-counting of the daughter 210Po using an automatic α/β-analyzer.
      
The removal of uranium with a strongly basic anion-exchange resin (SBA) has been tested in domestic use with different types of ion-exchange filters and water.
      
The signals are isolated by a monochromator and interference light filters.
      
Due to significant sorption activity and high thermal stability, fibrous basalt sorbents can be recommended to prepare sorption filters for treatment of radiochemical production wastes.
      
An optimal system was chosen for concentrating microamounts of U by isolation on standard membrane filters from dilute aqueous solutions in the form of complexes with 1-(2-thiazolylazo)-2-naphthol (TAN).
      
Lightfastness of Polymeric Color Filters with Metal-Containing Dyes and Heterocyclic Azo Dyes as Absorbing Agents
      
 

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