Results 231 to 240 of about 309,145 (305)
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Cation exchange capacity measurements
Communications in Soil Science and Plant Analysis, 1982Abstract Soil cation exchange capacity (CEC) measurements are important criteria for soil fertility management, vaste disposal on soils, and soil taxonomy. The objective of this research was to compare CEC values for arable Ultisols from the humid region of the United States as determined by procedures varying widely in their chemical conditions during
D. P. Horn, M. M. Alley, P. M. Bertsch
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Determination of the Cation-Exchange Capacity of Muscovite Mica
Journal of Colloid and Interface Science, 2000High cation-exchange capacity (CEC) muscovite mica with a homoionic surface was prepared by replacing the Li(+) surface ions of partially delaminated Li-mica with K(+). The CEC of this K-mica was determined by exchanging its surface cations with Cs(+), NH(+)(4), methylene blue (MB(+)), and copper triethylenetetramine [Cu(trien)(2+)].
Osman MA, Suter UW
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The Lower Cation Exchange Capacity Limit of Montmorillonite
Journal of Colloid and Interface Science, 1999Wyoming montmorillonite (Volclay) with different charges were produced by Li-incorporation and the interlayer cations were replaced by tetramethyl ammonium. Their XRD pattern showed a regular sequence of expanded and collapsed interlayers. The regularly interstratified structure corresponds to a regularity of Reichweite R = 1.
Meier LP, Nüesch R
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Determination of cation exchange capacity of ryegrass roots by summing exchangeable cations
Plant and Soil, 1989Cations were desorbed from root exchange sites of ryegrass (Lolium multiflorum Lam. cvs. Gulf, Marshall, Urbana, and Wilo) using BaCl2, BaCl2-triethanolamine, NH4OAc, and KCl. Results were analysed using multivariate analysis of variance. Ba2+-containing desorbents displaced more Ca2+ while monovalent desorbents displaced more exchangeable monovalent ...
Z. Rengel, D. L. Robinson
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Construction and Building Materials, 2019
There is a rapid development of earth construction the last few decades followed by an increased interest in scientific research in this field. One of the issues that have arisen is which soils are suitable for construction and can be designated as ...
Nikiforos Meimaroglou, C. Mouzakis
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There is a rapid development of earth construction the last few decades followed by an increased interest in scientific research in this field. One of the issues that have arisen is which soils are suitable for construction and can be designated as ...
Nikiforos Meimaroglou, C. Mouzakis
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Cation‐Exchange Capacity and Exchangeable Cations in Piedmont Soils of North Carolina
Soil Science Society of America Journal, 1959Abstract Soils of the North Carolina Piedmont were analyzed for permanent‐ and pH‐dependent charge components of cation‐exchange capacity. Permanent charge was taken as the summation of exchangeable metal cations, including Al displaced upon leaching with a neutral salt solution; pH dependent charge was regarded ...
N. T. Coleman +2 more
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Applied Clay Science, 2006
Abstract In this study a model is proposed enabling the detection of incorrect cation exchange capacity (CEC) and exchangeable cation values. Numerous CEC and exchangeable cation analyses of clayey sediments, soils and bentonites were performed using triethanolamine-buffered barium chloride, ammonium acetate, silver thiourea and other exchange ...
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Abstract In this study a model is proposed enabling the detection of incorrect cation exchange capacity (CEC) and exchangeable cation values. Numerous CEC and exchangeable cation analyses of clayey sediments, soils and bentonites were performed using triethanolamine-buffered barium chloride, ammonium acetate, silver thiourea and other exchange ...
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Cation exchange capacity of bentonite in a saline environment
Applied Geochemistry, 2019Cation exchange capacity (CEC) is one of the basic characteristics of clays and clay minerals. Accessory minerals, such as carbonates, can influence the measured value of the CEC because of their dissolution.
P. Boháč +5 more
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Exchangeable Ions, pH, and Cation Exchange Capacity
1999Abstract A lmost all nutrients taken up by plants and microbes are taken up in their ionic form from the soil solution, and knowledge of the size and composition of the soil solution, together with knowledge of nutrient turnover rates, can provide valuable insight into soil nutrient availability and into other biogeochemical processes ...
G Philip Robertson +3 more
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Cation exchange capacity of gypsic soils
Plant and Soil, 1975A slight modification to Bascomb's procedure for determining cation exchange capacity makes it applicable to gypsic soils even when the gypsum content is as high as seventy percent. The modification involves a second titration of the final extract made specifically for calcium and which is necessary to correct the magnesium titration.
Mohammed Garman, P. R. Hesse
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