8 documents found, page 1 of 1
Substâncias húmicas: Sistema de fracionamento sequencial por ultrafiltração com...
Rocha, Julio Cesar [UNESP]; Zara, Luiz Fabricio [UNESP]; Rosa, André Henrique [UNESP]; Sargentini Jr., Ézio; Burba, PeterMade available in DSpace on 2022-04-29T08:46:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2000-05-01; A sequential system for fractionation by ultrafiltration (SSFU) equipped with advanced membranes filters (molecular size cut-off: 5, 10, 30, 50 and 100 kDalton) of the polyethersulfone type was developed for analytical fractionation of humic substances (HS) extracted from aquatic systems or soils. The d...
Substâncias húmicas: sistema de fracionamento sequencial por ultrafiltração com...
Rocha, Júlio César; Zara, Luiz Fabrício; Rosa, André Henrique; Junior, Ézio Sargentini; Burba, Peter
Multi-method study on aquatic humic substances from the Rio Negro - Amazonas st...
Rocha, Júlio César; Junior, Ézio Sargentini; Toscano, Ilda Antonieta Salata; Zara, Luis Fabricio; Burba, Peter
Multi-method Study on Aquatic Humic Substances from the "Rio Negro" - Amazonas ...
Rocha, Júlio César; Sargentini, Ézio; Toscano, Ilda Antonieta Salata; Rosa, André Henrique; Burba, PeterThe aquatic humic substances investigated in this study were conventionally isolated from Rio Negro waters - Amazonas State/Brazil by means of the collector XAD 8. Molecular spectroscopy investigations of these humic substances using 1H-NMR and 13C-NMR indicated the presence of high aromaticity with few substituents, small amounts of carboxylic carbon, and an aliphatic/aromatic ratio of 1:1. The relatively high...
Mercury (II) reduction by aquatic humic substances from ?Rio Negro? - Amazonas ...
Junior, Ézio Sargentini; Zara, Luiz Fabrício; Rosa, André Henrique; Rocha, Júlio César; Burba, Peter
Humic substances: A sequential device for fractionation by ultrafiltration with...
Rocha, Júlio César; Zara, Luiz Fabrício; Rosa, André Henrique; Sargentini, Ézio; Burba, PeterA sequential system for fractionation by ultrafiltration (SSFU) equipped with advanced membranes filters (molecular size cut-off: 5, 10, 30, 50 and 100 kDalton) of the polyethersulfone type was developed for analytical fractionation of humic substances (HS) extracted from aquatic systems or soils. The device consists of five membrane filters (Sartocon® Micro) operated by a multi-channel peristaltic pump, enabli...
Substâncias húmicas: sistema de fracionamento sequencial por ultrafiltração com...
Rocha, Julio Cesar [UNESP]; Zara, Luiz Fabricio [UNESP]; Rosa, André Henrique [UNESP]; Sargentini Junior, Ézio; Burba, PeterSubmitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T18:48:26Z No. of bitstreams: 1 S0100-40422000000300020.pdf: 107492 bytes, checksum: 9f72932363a6111eb1aa4243dd0ae779 (MD5); Made available in DSpace on 2013-08-22T18:48:26Z (GMT). No. of bitstreams: 1 S0100-40422000000300020.pdf: 107492 bytes, checksum: 9f72932363a6111eb1aa4243dd0ae779 (MD5) Previous issue date: 2000-06-01; Made availabl...
Interaction of mercury(II) with humic substances from the Rio Negro (Amazonas S...
Rocha, Julio C. [UNESP]; Sene, Jeosadaque J. de [UNESP]; Burba, Peter; Klockow, DieterSubmitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:19:39Z No. of bitstreams: 0Bitstream added on 2014-05-27T14:44:46Z : No. of bitstreams: 1 2-s2.0-0032399538.pdf: 93891 bytes, checksum: 198d9eed1aa9f0179fce2ca047b4e68d (MD5); Made available in DSpace on 2014-05-27T11:19:39Z (GMT). No. of bitstreams: 0 Previous issue date: 1998-12-01; The aquatic humic substances (HS) inv...