1999
DOI: 10.1016/s0045-6535(99)00107-1
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Organic radicals and paramagnetic metal complexes in municipal solid waste composts. An EPR and chemical study

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Cited by 64 publications
(61 citation statements)
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“…In general, composting of organic materials causes an increase of the E 4 / E 6 ratio of HA and FA fractions (Inbar et al, 1992 ;Jerzykiewicz et al, 1999 ;Plaza et al, 2005aPlaza et al, , 2007Fuentes et al, 2006 ). With some exceptions (Piccolo et al, 1992 ;Garc í aGil et al, 2004a ;Hern á ndez et al, 2006 ), the E 4 / E 6 ratio of HAs from organic amendments are larger than the corresponding mean values reported for unamended soil HAs (Gonz á lez -Vila and Martin, 1987 ; Garc í a - Gil et al, 2004b ;Plaza et al, 2005a ;Campitelli et al, 2006 ).…”
Section: Utraviolet -Visible Spectramentioning
confidence: 90%
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“…In general, composting of organic materials causes an increase of the E 4 / E 6 ratio of HA and FA fractions (Inbar et al, 1992 ;Jerzykiewicz et al, 1999 ;Plaza et al, 2005aPlaza et al, , 2007Fuentes et al, 2006 ). With some exceptions (Piccolo et al, 1992 ;Garc í aGil et al, 2004a ;Hern á ndez et al, 2006 ), the E 4 / E 6 ratio of HAs from organic amendments are larger than the corresponding mean values reported for unamended soil HAs (Gonz á lez -Vila and Martin, 1987 ; Garc í a - Gil et al, 2004b ;Plaza et al, 2005a ;Campitelli et al, 2006 ).…”
Section: Utraviolet -Visible Spectramentioning
confidence: 90%
“…Generally, this resonance is accompanied by a number of other signals of various complexity and intensity possibly arising from paramagnetic metal ions present as organic complexes and/or mineral impurities (Figure 4.9 ) (Hervas et al, 1989 ;Jerzykiewicz et al, 1999 ;Plaza et al, 2002Plaza et al, , 2003Soler -Rovira et al, 2002, 2003Gonz á lez -P é rez et al, 2006 ). sludge ( b , c , and d , respectively).…”
Section: Electron Spin Resonance Spectramentioning
confidence: 99%
“…Jerzykiewicz et al, 33 Apesar das concentrações de RLO dos AH extraídos da L1 terem apresentado incremento em função do tempo de compostagem, elas mostraram os menores valores, a partir de 30 dias, em comparação com as leiras L2 e L3 (Figura 6), sendo esse resultado mais coerente com os apresentados na Tabela 1, onde foi observado que a L1 não apresentou características de material humificado.…”
Section: Análises De Rpe Dos Ahunclassified
“…(Mikutta et al, 2006;Lima et al, 2005Lima et al, , 2006. Carboxylic (-COOH) and phenolic (-OH) functional groups, which are usually found in the periphery of the HS (Fassbender, 1975), are related to their reactivity, contributing to the increase in CEC (Jerzykiewicz et al, 1999;Lead et al, 1999;Hayes & Malcom, 2001), whereas the hydrophobic functional groups are more directly related to the stability of HS in the soil. For being recalcitrant and adsorbed by the soil mineral matrix or occluded intra-aggregates (Mikutta et al, 2006), hydrophobic HS are more resistant to microbial degradation (Piccolo et al, 1999), and have greater residency in the soil.…”
Section: Introductionmentioning
confidence: 99%