Bioavailability organ

The prudent disposal of large quantities of agricultural and domestic wastewaters is a major concern in our modern society. Raw wastewaters most often contain significant amounts of bioavailable organic substances such as phenols, endocrine... 

Verstraete W, W Devlieger (1996) Formation of non-bioavailable organic residues in soil perspectives for site remediation. Biodegradation 7 471-485. 

Huckins, J.N. Petty, J.D. Lebo, J.A. Orazio, C.E. Prest, H.E Tillitt, D.E. Ellis, G.S. Johnson, B.T. Manuweera, G.K. 1996, Semipermeable Membrane Devices (SPMDs) for the Concentration and Assessment of Bioavailable Organic Contaminants in Aquatic Environments. In Techniques in Aquatic Toxicology, Ostrander, G.K., Ed. CRC Press Boca Raton, FL pp. 625-655. 

Vrana, B. Paschke, A. Popp, R Schiiiirmann, G. 2001b, Use of semipermeable membrane devices (SPMDs) Determination of bioavailable organic contaminants in the industrial region of Bitter-feld, Saxony-Anhalt, Germany. Environ. Sci. Pollut. R. 8 27-34. 

Neudorfer F, Meyer-Reil LA (1997) A microbial biosensor for the microscale measurement of bioavailable organic carbon in oxide sediments. Marine Ecology Progr Ser 147 295-309... 

Bioavailable Organic Chemical Species of the Trace Elements. 

Cadmium shows a very high bioconcentration factor (BCF), mainly because of its extremely slow elimination, although the absorption is rather low. The metal is not biomethylated and does not exist in any highly bioavailable organic forms. Its uptake is coupled to calcium and iron transporting mechanisms in which cadmium is mistaken for the essential metal and consequently transported. The uptake of cadmium is thus enhanced in situations of iron deficiency. 

The close relation to bioavailable organic matter was used as the rate-limiting control parameter for benthic oxygen consumption. Jahnke (1996) determined an empirical function based on the correlation between the oxygen flux across the sediment/water interface to the concentrations of C and CaCO and the overall... 

Studies in the tropics have reported organic phosphorus in the supernatant after resin extraction, in the sodium bicarbonate extract, in the sodium hydroxide extract before sonication, in the sodium hydroxide extract after sonication, and in the concentrated hydrochloric acid extract. Sodium bicarbonate recovers easily hydrolysable organic phosphorus (Bowman and Cole, 1978), while sodium hydroxide recovers organic phosphorus associated with humic and fulvic acids. Concentrated hydrochloric acid recovers organic phosphorus from more stable pools, although it may also extract bioavailable organic phosphorus from particulate organic matter (Tiessen and... 

Partial neutralization of exchangeable Al(III) along with the reduction of Fe(III) oxides during flooded soil conditions produces relatively stable ferrous-aluminum hydroxide interlayers in 2 1 clays, leading to a further decrease in CEC. Ferrolysis typically occurs in surface soil horizons, where there is an abundant supply of bioavailable organic matter to support the microbial reduction of Fe(IH) oxides. 

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