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Effect of pH on Arsenate and Arsenite Toxicity to Luminescent Bacteria (Vibrio fischeri)
An antagonistic effect between the arsenate chemical species was revealed and the toxicity of both As(III) and As(V) was found to chiefly depend on pH, as a consequence of the strong influence of this parameter on the chemical speciation. Expand
Patterns of metals and arsenic poisoning in Vibrio fischeri bacteria.
The Microtox test is sensitive enough for detecting some of the tested elements with respect to official regulations of Catalonia (Spain) dealing with pollution control, with the exception of cadmium, mercury, arsenate, arsenite and chromate. Expand
Toxicity of cadmium species on luminescent bacteria
NaNO3 and NaClO4 have been tested successfully as alternative to sodium chloride to provide the adequate osmotic protection of the bacteria. Expand
Scandium and chromium in the strontium filament in the Homunculus of η Carinae
We continue a systematic study of chemical abundances of the Strontium Filament found in the ejecta of eta Carinae. To this end we interpret the emission spectrum of Sc II and Cr II using multilevelExpand
Antarctic siphonophores from plankton samples of the United States Antarctic Research Program : Eltanin cruises for spring, summer, fall, and winter (Cruises 3-5, 8-23, 25-28, 30, 35, and 38)
This volume is a monographic study of the siphonophores in the Antarctic, Subantarctic and adjacent regions of the Atlantic and Pacific Oceans, though not all species known from the literature areExpand
Effect of organic load and nutrient ratio on the operation stability of the moving bed bioreactor for kraft mill wastewater treatment and the incidence of polyhydroxyalkanoate biosynthesis.
The maximum absolute fluorescence against the proportion of cells accumulating PHA was obtained for an OLR of 2.41 ± 0.19 kg COD m(-3)d(-1) and a BOD(5):N:P relationship of 100:1:0.2. Expand
Analysis of dioxin-like compounds in vegetation and soil samples burned in Catalan forest fires. Comparison with the corresponding unburned material.
Although a change in the profile is observed in burned samples compared to unburned ones, the absolute values of concentration decrease in most samples, and natural fires seem not to be an important source of dioxin-like compounds. Expand
Evaluation of lead(II) and nickel(II) toxicity in NaCl and NaClO4 solutions by using MicrotoxR bioassay
Abstract The toxicity of nickel and lead compounds has been evaluated in NaCl and NaClO4 solutions by using the MicrotoxR bioassay. The aim of this work was to assess the toxicity of the differentExpand
Aerobic degradation of 2,4,6-TCP content in ECF bleached effluent.
The effect of increasing the concentration of 2,4,6-trichlorophenol (2,4-6-TCP) content in ECF bleaching sequence effluent on the degradative activity of bacterial communities present in an aerobic system treatment was studied. Expand
Improved aerobic biodegradation of abietic acid in ECF bleached kraft mill effluent due to biomass adaptation.
The objective of this study was to investigate the biological removal of abietic acid during the treatment of elemental chlorine free (ECF) kraft mill effluents in aerobic lagoons and to assess its improvement with time as a result of biomass adaptation. Expand