| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Pantanal. |
|
Data corrente: |
27/01/1997 |
|
Data da última atualização: |
03/04/2017 |
|
Autoria: |
ALVES, B. J. R.; BODDEY, R. M.; URQUIAGA, S. S. |
|
Título: |
A rapid and sensitive flow injection technique for the analysis of ammonium in soil extracts. |
|
Ano de publicação: |
1993 |
|
Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, v.24, n.3/4, p.277-284, 1993. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The steam distilation technique for the quantification of soil mineral nitrogens is not well adapted to estimate very low levels of NH4+ and NO3- such as those found in tropical pastures. In this paper we describe a flow injection analysis (FIA) technique for the direct estimation of soil ammonium in potassium chloride extracts. The technique is based on the salicylate/hypochloride colorimetric reaction with the resulting colouration read at 647 nm. The speed of the reaction was increased by immersing the reaction coils in a water bath maintained at 70C. The technique was capable of accurately quantifying ammonium to concentrations as low as 0.05 mg NH4+-N/L (equivalent to 0.25 mg NH4+-N/g dry soil) and sample thoughputs of at least 60 samples per hour could be achieved. It was found that amino acids whould also give a positive colorimetric reaction but that in the ten tropical soils examined this was not a significant source of error. |
|
Palavras-Chave: |
Ammonium; Amonio; Analysis. |
|
Thesagro: |
Análise; Nitrogênio; Nutrição; Solo. |
|
Thesaurus Nal: |
nitrogen; nutrition; soil. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01656naa a2200265 a 4500
001 1790324
005 2017-04-03
008 1993 bl --- 0-- u #d
100 1 $aALVES, B. J. R.
245 $aA rapid and sensitive flow injection technique for the analysis of ammonium in soil extracts.
260 $c1993
520 $aThe steam distilation technique for the quantification of soil mineral nitrogens is not well adapted to estimate very low levels of NH4+ and NO3- such as those found in tropical pastures. In this paper we describe a flow injection analysis (FIA) technique for the direct estimation of soil ammonium in potassium chloride extracts. The technique is based on the salicylate/hypochloride colorimetric reaction with the resulting colouration read at 647 nm. The speed of the reaction was increased by immersing the reaction coils in a water bath maintained at 70C. The technique was capable of accurately quantifying ammonium to concentrations as low as 0.05 mg NH4+-N/L (equivalent to 0.25 mg NH4+-N/g dry soil) and sample thoughputs of at least 60 samples per hour could be achieved. It was found that amino acids whould also give a positive colorimetric reaction but that in the ten tropical soils examined this was not a significant source of error.
650 $anitrogen
650 $anutrition
650 $asoil
650 $aAnálise
650 $aNitrogênio
650 $aNutrição
650 $aSolo
653 $aAmmonium
653 $aAmonio
653 $aAnalysis
700 1 $aBODDEY, R. M.
700 1 $aURQUIAGA, S. S.
773 $tCommunications in Soil Science and Plant Analysis$gv.24, n.3/4, p.277-284, 1993.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Pantanal (CPAP) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Pantanal. |
|
Data corrente: |
17/09/2007 |
|
Data da última atualização: |
29/01/2018 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
Internacional - C |
|
Autoria: |
LEITE, K. C. E.; COLLEVATTI, R. G.; MENEGASSO, T. R.; TOMAS, W. M.; DUARTE, J. M. L. |
|
Afiliação: |
K. C. E. Leite, Universidade Católica de Brasília; R. G. Collevatti, Universidade Católica de Brasília; T. R. Menegasso, Universidade Estadual Paulista; Walfrido Moraes Tomas, Embrapa Pantanal; J. M. B. Duarte, Universidade Estadual Paulista. |
|
Título: |
Transferability of microsatellite loci from Cervidae species to the endangered Brazilian marsh deer, Blastocerus dichotomus. |
|
Ano de publicação: |
2007 |
|
Fonte/Imprenta: |
Genetics and Molecular Research, v.6, n.2, p.325-330, 2007. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Blastocerus dichotomus, the marsh deer, is the largest Brazilian Cervidae species. The species is endangered because of hunting and loss of its natural habitat, i.e., flood plain areas, because of hydroeletric power station construction and agricultural land expansion. In the present study we tested 38 microsatellite loci from four Cervidae species: Odocoileus virginianus (7), Rangifer tarandus (17), Capreolus capreolus (7), and Mazama bororo (7). Eleven loci showed clear amplification, opening a new perspective for the generation of fundamental population genetic data dor devising conservation strategies for B. dichtomus. |
|
Thesagro: |
Blastocerus Dichotomus. |
|
Thesaurus NAL: |
Cervidae. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/171785/1/Tomas.pdf
|
|
Marc: |
LEADER 01255naa a2200193 a 4500
001 1812435
005 2018-01-29
008 2007 bl uuuu u00u1 u #d
100 1 $aLEITE, K. C. E.
245 $aTransferability of microsatellite loci from Cervidae species to the endangered Brazilian marsh deer, Blastocerus dichotomus.$h[electronic resource]
260 $c2007
520 $aBlastocerus dichotomus, the marsh deer, is the largest Brazilian Cervidae species. The species is endangered because of hunting and loss of its natural habitat, i.e., flood plain areas, because of hydroeletric power station construction and agricultural land expansion. In the present study we tested 38 microsatellite loci from four Cervidae species: Odocoileus virginianus (7), Rangifer tarandus (17), Capreolus capreolus (7), and Mazama bororo (7). Eleven loci showed clear amplification, opening a new perspective for the generation of fundamental population genetic data dor devising conservation strategies for B. dichtomus.
650 $aCervidae
650 $aBlastocerus Dichotomus
700 1 $aCOLLEVATTI, R. G.
700 1 $aMENEGASSO, T. R.
700 1 $aTOMAS, W. M.
700 1 $aDUARTE, J. M. L.
773 $tGenetics and Molecular Research$gv.6, n.2, p.325-330, 2007.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Pantanal (CPAP) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
