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dc.contributor.author
Sesto Cabral, María Eugenia  
dc.contributor.author
Sigstad, Emma Elizabeth  
dc.date.available
2018-07-17T18:40:19Z  
dc.date.issued
2011-04  
dc.identifier.citation
Sesto Cabral, María Eugenia; Sigstad, Emma Elizabeth; A new approach to determine soil microbial biomass by calorimetry; Springer; Journal of Thermal Analysis and Calorimetry; 104; 1; 4-2011; 23-29  
dc.identifier.issn
1388-6150  
dc.identifier.uri
http://hdl.handle.net/11336/52481  
dc.description.abstract
A method to determine soil microbial biomass (SMB) by isothermal calorimetry is reported. Soil samples ranging in pH from 6.2 to 9.4 and different textures were used to develop the method. Soil at 60% of its field capacity humidity was amended with a previously determined amount of glucose as to give the maximal response of CO2 evolution. Then, an aliquot was weighed in the calorimeter ampoule and specific thermal power (p)-time (t) curves were obtained at 25 °C. After 1-2 h, a vial containing a 0.5 M NaOH solution was introduced to determine the specific thermal power due to CO 2 evolution, pCO2 during 1-2 h. Then, the vial was removed and the experiment continued for 1-2 h. Specific thermal power due to CO 2 evolution was converted to rate (CO2-C/mm3 g-1 h-1) by using the heat of reaction of CO2 with NaOH and the molar volume. This value was further converted into SMB/μg g-1 by using a conversion factor of 32.4. A guide to perform the calculations is given. Values of log SMB were linearly related with values of log p giving a similar relation to a previously reported where SMB was determined by conventional methods.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Springer  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Calorimetry  
dc.subject
Microbial Biomass  
dc.subject
Soil  
dc.subject.classification
Otras Ciencias Químicas  
dc.subject.classification
Ciencias Químicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.subject.classification
Otras Ciencias Biológicas  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
A new approach to determine soil microbial biomass by calorimetry  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-07-11T15:23:19Z  
dc.identifier.eissn
1572-8943  
dc.journal.volume
104  
dc.journal.number
1  
dc.journal.pagination
23-29  
dc.journal.pais
Alemania  
dc.journal.ciudad
Berlín  
dc.description.fil
Fil: Sesto Cabral, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina  
dc.description.fil
Fil: Sigstad, Emma Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina  
dc.journal.title
Journal of Thermal Analysis and Calorimetry  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.springerlink.com/content/q47n2x3270561m55/  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1007/s10973-010-1091-3