Determination of organic carbon in aqueous extracts of soils and fertilizers

Ciavatta, Claudio; Govi, M.; Antisari, Livia Vittori; Sequi, P.

doi:10.1080/00103629109368455

Cited by 126 publications

(55 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The TOC was determined with the Springer-Klee method using 1/3 M K 2 Cr 2 O 7 as oxidant [18]. The TEC and the HLA + FLA were extracted in NaOH + Na 4 P 2 O 7 0.1 M; a polyvinylpyrolidone column was used to separate the humic-like substances from the non-humic substances, 1/3 M K 2 Cr 2 O 7 was used as oxidant [19,20]. The total nitrogen content was determined using an elemental analyser.…”

Section: Methodsmentioning

confidence: 99%

Olive pulp and its effluents suitability for soil amendment

Nastri

Ramieri

Abdayem

et al. 2006

Journal of Hazardous Materials

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Olive pulp and its effluents suitability for soil amendment

Nastri

Ramieri

Abdayem

et al. 2006

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…However the assignment of specific compounds to certain temperature ranges in DTA profiles varies widely. Peaks at $300°C can be produced by combustion of polysaccharides, decarboxylation of acidic groups, and dehydration of hydroxylate aliphatic structures (Ciavatta et al, 1991;Dell'Abate et al, 2002). Peaks at $400°C have been associated with the combustion of plant and microbially-derived aliphatic structures (Sheppard and Forgeron 1987;Schulten and Leinweber, 1999), but are sometimes assigned to aromatics (Ranalli et al, 2001;Dell'Abate et al, 2002;Strezov et al, 2004).…”

Section: Tg-dtamentioning

confidence: 98%

Changes in water extractable organic matter during incubation of forest floor material in the presence of quartz, goethite and gibbsite surfaces

Heckman

Vázquez‐Ortega

Gao

et al. 2011

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

“…Suspension was centrifuged at 10,000 rpm for 10 min. After filtration through a glass fiber filter paper (0.4 µm), carbon was determined by dichromate oxidation titration (Ciavatta et al 1991).…”

Section: Soil Sampling and Analysismentioning

confidence: 99%

Accumulation of heavy metals in dietary vegetables and cultivated soil horizon in organic farming system in relation to atmospheric deposition in a seasonally dry tropical region of India

Pandey

2008

Environ Monit Assess

140

View full text Add to dashboard Cite

Increasing consciousness about future sustainable agriculture and hazard free food production has lead organic farming to be a globally emerging alternative farm practice. We investigated the accumulation of air-borne heavy metals in edible parts of vegetables and in cultivated soil horizon in organic farming system in a low rain fall tropical region of India. The factorial design of whole experiment consisted of six vegetable crops (tomato, egg plant, spinach, amaranthus, carrot and radish) x two treatments (organic farming in open field and organic farming in glasshouse (OFG)) x seven independent harvest of each crop. The results indicated that except for Pb, atmospheric deposition of heavy metals increased consistently on time scale. Concentrations of heavy metals in cultivated soil horizon and in edible parts of open field grown vegetables increased over time and were significantly higher than those recorded in OFG plots. Increased contents of heavy metals in open field altered soil porosity, bulk density, water holding capacity, microbial biomass carbon, substrate-induced respiration, alkaline phosphatase and fluorescein diacetate hydrolytic activities. Vegetable concentrations of heavy metal appeared in the order Zn > Pb > Cu > Ni > Cd and were maximum in leaves (spinach and amaranths) followed by fruits (tomato and egg plant) and minimum in roots (carrot and radish). Multiple regression analysis indicated that the major contribution of most heavy metals to vegetable leaves was from atmosphere. For roots however, soil appeared to be equally important. The study suggests that if the present trend of atmospheric deposition is continued, it will lead to a destabilizing effect on this sustainable agricultural practice and will increase the dietary intake of toxic metals.

show abstract

Determination of organic carbon in aqueous extracts of soils and fertilizers

Cited by 126 publications

References 9 publications

Olive pulp and its effluents suitability for soil amendment

Olive pulp and its effluents suitability for soil amendment

Changes in water extractable organic matter during incubation of forest floor material in the presence of quartz, goethite and gibbsite surfaces

Accumulation of heavy metals in dietary vegetables and cultivated soil horizon in organic farming system in relation to atmospheric deposition in a seasonally dry tropical region of India

Contact Info

Product

Resources

About