Results 141 to 150 of about 641,085 (189)

Chemical Fractionation of Phosphorus in Stabilized Biosolids

Journal of Environmental Quality, 2008
Three chemicals—ferrous sulfate (FeSul), calcium oxide (CaO), and aluminum sulfate (alum)—were applied at different rates to stabilize P in fresh, anaerobically digested biosolids (FBS) obtained from an activated sewage treatment plant. A modified Hedley fractionation procedure was used to assess P forms in these sludge‐borne materials and in a ...
Xiao-Lan, Huang, Yona, Chen, Moshe, Shenker   +2 more
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Fractionation of Phosphorus Compounds in Ossifying Cartilage

Nature, 1957
THE phosphorus compounds of ossifying cartilage from the long bones of various young animals have been fractionated into two components: (a) 20 per cent tri-chloracetic acid-soluble fraction; (b) acid-insoluble fraction.
R G, WHITEHEAD, S M, WEIDMAN
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SERUM FRACTIONS OF CALCIUM AND PHOSPHORUS IN URAEMIA

Acta Medica Scandinavica, 1971
Abstract.Serum concentration of total calcium, protein‐bound calcium, complexbound calcium, ionized calcium, total inorganic phosphorus, and ultrafiltrable phosphorus has been determined in 20 normal persons and in 30 uraemic patients. A positive correlation between creatinine clearance and total serum calcium and protein‐bound calcium and a negative ...
E, Weeke, T, Friis
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A Soil Test for Phosphorus Based Upon Fractionation of Soil Phosphorus: I. Correlation of Soil Phosphorus Fractions with Plant‐Available Phosphorus

Soil Science Society of America Journal, 1964
Abstract The forms of P in 24 soils were determined by chemical fractionation. The available P was determined by plant growth experiments. Regression analysis of the P fractions with available P showed that iron P explained most of the variation.
A. H. Al‐Abbas, S. A. Barber
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Phosphorus species and fractionation – Why sewage derived phosphorus is a problem

Journal of Environmental Management, 2011
Phosphorus (P) inputs to sewage treatment works (STW) come from a variety of sources and filtration of treated wastewater prior to discharge into receiving waters is a common practice. This means P in treated wastewaters may be present in forms that are potentially more bioavailable and mobile.
Helen K G R, Millier, Peter S, Hooda
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Critical Aspects of Sedimentary Phosphorus Chemical Fractionation

Journal of Environmental Quality, 1994
AbstractSequential leaching procedures have been widely used as an environmental tool to quantify sedimentary P reservoirs. Nevertheless, they still present important issues that need to be investigated such as readsorption of leached ions and organic P hydrolysis.
Barbanti A, Bergamini M C, Frascari F, Miserocchi S, Rosso G   +4 more
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Soil Test Phosphorus and Phosphorus Fractions with Long‐Term Phosphorus Addition and Depletion

Soil Science Society of America Journal, 2004
The fate of fertilizer P in soil during crop production has to be determined to evaluate the long‐term economic value and sustainability of fertilizer practices. We assessed changes in soil test P and soil P fractions with continuous P fertilization and soil P depletion under continuous corn ( Zea mays
T. Q. Zhang, A. F. MacKenzie, B. C. Liang, C. F. Drury   +3 more
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Phosphorus fractions in grassland soils

Chemosphere, 2002
The partitioning of P among major chemical forms was studied in 110 non-fertilized, semi-natural grassland soils of southeastern Sweden, comprising a wide range of soil acidity and other chemical properties. The P fractions bound to Ca and Fe were closely related to soil acidity, expressed as pH-KCl, especially when calculated as % of the total pool of
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Prediction of phosphorus fractions in soils

Arid Soil Research and Rehabilitation, 1991
Abstract Organic and inorganic phosphorus fractions were determined in 20 soil samples representing different soil parent materials and cropping managements. The distribution of phosphorus (P) across different fractions and their relationships to soil chemical and physical data were used to develop models capable of predicting P forms.
E. A. Elkhatib, A. G. Thabet, M. K. EL‐Haris   +2 more
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Soil Phosphorus Fractionation Studies

Soil Science Society of America Journal, 1961
Abstract Total soil phosphorus in 21 soils was fractionated into 5 components viz. (a) calcium phosphate, (b) adsorbed phosphate, (c) iron and aluminum phosphate, (d)
J. M. Patel, B. V. Mehta
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