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Polyacrylonitrile (PAN) and bentonite (B)/zeolite (Z)-PAN composites were prepared by direct polymerization of acrylonitrile (AN) and AN adsorbed onto B and Z. PAN and the composites were subjected to...
Dynamic and controlled rate thermal analysis has been used to characterise synthesised jarosites of formula [M(Fe)3(SO4)2(OH)6] where M is Pb, Ag or Pb–Ag mixtures. Thermal decomposition occurs in a s...
The use of a natural palygorskite clay for the removal of Pb(II) from aqueous solutions for different contact times, pHs of suspension, and amounts and particle sizes of palygorskite clay were invest...
Weinvestigatedsmelter-contaminatedsoilsfromEvin-Malmaison,Nord-Pas-de-Calais, France,andminetailingsfromLeadville,Colorado,U.S.A.BulkPbconcentrationsrange from460to1900ppminthetopsoilsatEvin-Malmais...
Single-crystalX-raydiffractionwasperformedinsituat T 20,230,465,and700C Si O , I2/c,a 8.402, b 13.043, c 14.308 onapartiallyorderedleadfeldspar(PbAl2 2 8351?? A, 115.30, V 1417.6A ; Q 0.71).Theunit...
Lead feldspar single crystals were annealed at T 5 1050 and 1000 8 C, starting from a disordered metastable configuration (PbFH, Qod5 0) and from an ordered configura-tion (PbFL, Qod5 0.89). Single-cr...
Abstract: Redox and acid-base reactions play important roles in the fate of metal contaminants in soils and sediments. The presence of significant amounts of Cr, Pb and other toxic heavy metals in con...
The crystal chemistry and structure ofthe layered lead oxychloride parkinsonite, ideally Pb7Mo09C12, have been reevaluated in the light of TEM observations of natural and syn-thetic samples and the st...
The Al-Si configuration in ordered and disordered lead feldspar (PbA12Si20g) has been investigated by single-crystal X-ray diffraction, Single crystals synthesized from meltand cooled from T= 1280to 1...
Lower Wham Brake is a cypress, rim-swamp artificially enclosed in 1950 as a 22 km2 industrial reservoir by the International Paper Company (IPC)-Bastrop Mill, for regulating downstream water quality. ...

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