1991
DOI: 10.1016/0146-6380(91)90006-6
|View full text |Cite
|
Sign up to set email alerts
|

Statistical evaluation of the elemental composition of humic substances

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
2
1

Citation Types

29
92
3
17

Year Published

2004
2004
2022
2022

Publication Types

Select...
5
3

Relationship

0
8

Authors

Journals

citations
Cited by 213 publications
(141 citation statements)
references
References 17 publications
29
92
3
17
Order By: Relevance
“…As razões atômicas têm sido utilizadas indiretamente para descrever o grau de condensação, a fonte de matéria orgânica, as transformações diagenéticas, bem como as condições ambientais sob as quais elas foram formadas (Rice & MacCarthy, 1991), além de serem um indicador simples do comportamento químico das substâncias húmicas (Canellas et al, 1999). A razão H/C é considerada como índice de aromaticidade (Stevenson, 1994).…”
Section: Composição Elementarunclassified
“…As razões atômicas têm sido utilizadas indiretamente para descrever o grau de condensação, a fonte de matéria orgânica, as transformações diagenéticas, bem como as condições ambientais sob as quais elas foram formadas (Rice & MacCarthy, 1991), além de serem um indicador simples do comportamento químico das substâncias húmicas (Canellas et al, 1999). A razão H/C é considerada como índice de aromaticidade (Stevenson, 1994).…”
Section: Composição Elementarunclassified
“…Table 3 shows the elemental composition of HS isolated from thermal waters and SRFA. In all samples HAs have higher C and N, but lower O abundances than in Rice and MacCarthy, 1991 (van Krevelen, 1950;Visser, 1983). Extensive and statistically analyzed study for several hundreds of HAs and FAs can be found in Rice and MacCarthy (1991).…”
Section: Ha and Fa Content Of Water Samplesmentioning
confidence: 99%
“…In all samples HAs have higher C and N, but lower O abundances than in Rice and MacCarthy, 1991 (van Krevelen, 1950;Visser, 1983). Extensive and statistically analyzed study for several hundreds of HAs and FAs can be found in Rice and MacCarthy (1991). A diagram adapted from this paper can represent the typical pattern of humic substances in the light of our HS samples (Fig.…”
Section: Ha and Fa Content Of Water Samplesmentioning
confidence: 99%
“…The results showed low C and N contents and the high O content, compared to the average composition -C (551 g kg -1 ), H (58 g kg -1 ), N (35 g kg -1 ) and O (356 g kg -1 ) -usually found in HA extracted from soil (Rice and MacCarthy, 1991). The high O content suggests an elevated oxidation level of HA, suggesting a high HA total acidity or cation exchange capacity.…”
Section: Resultsmentioning
confidence: 85%
“…This ratio is an indirect measurement of the unsaturation level (Stevenson, 1994). In other words, this is a ratio of the alkyl C and the conjugated C linked to aromatic systems (Rice and MacCarthy, 1991). HA isolated from other organic residues such as urban waste compost (Campitelli et al, 2006) and sewage sludge (Canellas et al, 2001) usually exhibit higher H/C ratio.…”
Section: Resultsmentioning
confidence: 99%