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Biblioteca(s):  Embrapa Pecuária Sudeste.
Data corrente:  04/09/2017
Data da última atualização:  05/01/2018
Tipo da produção científica:  Artigo em Periódico Indexado
Autoria:  MACHADO, R. C.; AMARAL, C. D. B. do; SCHIAVO, D.; NOBREGA, J. de A.; NOGUEIRA, A. R. de A.
Afiliação:  Raquel Cardoso Machado, UFSCar; Clarice Dias Britto do Amaral, UFSCar; Daniela Schiavo, Agilent Technologies; Joaquim de Araújo Nobrega, UFSCar; ANA RITA DE ARAUJO NOGUEIRA, CPPSE.
Título:  Complex samples and spectral interferences in ICP-MS: evaluation of tandem mass spectrometry for interference-free determination of cadmium, tin and platinum group elements.
Ano de publicação:  2017
Fonte/Imprenta:  Microchemical Journal, v. 130, p. 271-275, 2017.
DOI:  https://doi.org/10.1016/j.microc.2016.09.011
Idioma:  Inglês
Conteúdo:  An analytical method was developed for determination of Cd, Sn, Pd, Pt and Rh in sediments, fertilizer and sludge samples by inductively coupled plasma tandem mass spectrometry (ICP-MS/MS). The performance of ICP-MS/MS using oxygen into the octopole reaction system (ORS3) and MS/MS mode, on mass and shift mass, was evaluated to overcome spectral interferences. Addition and recovery experiments in sediments, fertilizer and sludge samples at three concentration levels, 0.5, 1.0 and 5.0 μg L− 1, were carried out to evaluate the accuracy of the developed procedure. Quantitative recoveries, from 80 to 113% for 112Cd+, 120Sn+ and 106Pd+ were reached using MS/MS in on mass operation mode. For Pt and Rh, recoveries ranged from 81 to 117% by monitoring 195Pt16O+ and 103Rh16O+ in MS/MS (shift mass mode) with 0.3 mL min− 1 oxygen gas flow rate pressurized into the ORS3. Limits of detection of the developed method were 15, 2.5, 1.8, 9.0 and 9.9 μg kg− 1 for 195Pt16O+, 103Rh16O+, 112Cd+, 120Sn+, and 106Pd+, respectively. All analytes were simultaneously interference-free determined by ICP-MS/MS, which demonstrates the potential of this instrumental analytical strategy for Cd, Sn, Pd, Pt, and Rh determination in complex samples.
Palavras-Chave:  Mass shift mode; Spectral interferences.
Thesaurus Nal:  tandem mass spectrometry.
Categoria do assunto:  W Química e Física
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Pecuária Sudeste (CPPSE)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status URL
CPPSE24098 - 1UPCAP - DDPROCI-2017.00038MAC2017.00166
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Biblioteca(s):  Embrapa Semiárido.
Data corrente:  20/11/2023
Data da última atualização:  20/11/2023
Tipo da produção científica:  Artigo em Periódico Indexado
Circulação/Nível:  A - 3
Autoria:  SILVA, A. M. M.; FEILER, H. P.; QI, X.; ARAÚJO, V. L. V. P. de; LACERDA JÚNIOR, G. V.; FERNANDES JUNIOR, P. I.; CARDOSO, E. J. B. N.
Afiliação:  ANTONIO MARCOS MIRANDA SILVA, ESALQ; HENRIQUE PETRY FEILER, Purdue University, West Lafayette, IN; XUE QI, Inner Mongolia Agricultural University, China; VICTOR LUCAS VIEIRA PRUDÊNCIO DE ARAÚJO, ESALQ; GILENO VIEIRA LACERDA JÚNIOR; PAULO IVAN FERNANDES JUNIOR, CPATSA; ELKE JURANDY BRAN NOGUEIRA CARDOSO, ESALQ.
Título:  Impact of water shortage on soil and plant attributes in the presence of arbuscular mycorrhizal fungi from a harsh environment.
Ano de publicação:  2023
Fonte/Imprenta:  Microorganisms, v. 11, n. 5, 1144, 2023.
DOI:  https://doi.org/10.3390/microorganisms11051144
Idioma:  Inglês
Conteúdo:  Arbuscular mycorrhizal fungi (AMF) play a crucial role in plant health due to their ability to improve tolerance to biotic and abiotic stresses. Our aim was to evaluate the effectiveness of a pool of native AMF from a harsh environment on plant performance and changes in soil attributes under different levels of drought. An experiment using maize was established, varying the soil water content to simulate severe drought (30% of the water-holding capacity [WHC]), moderate (50% of the WHC) and no drought (80% of the WHC, control treatment). Soil and plant attributes were measured (enzyme activity, microbial biomass, AMF root colonisation and plant biomass and nutrient uptake). There was a two-fold increase in plant biomass under moderate drought when compared to no drought treatment, but there was no difference in nutrient uptake. Under severe drought, there were the highest enzyme activities related to phosphorus (P) cycling and P microbial biomass, indicating higher P microbial immobilization. The increase in AMF root colonisation was observed in plants under moderate and no drought. Our findings demonstrated that the better use of the AMF inoculum varied according to drought levels, with better performance under moderate drought due to the increase in plant biomass.
Palavras-Chave:  AMF; Associação micorrízica; Biomassa vegetal; Déficit hídrico; Estresses abióticos; Estresses bióticos; Fungos micorrízicos arbusculares; Inoculação fúngica; Mitigação do estresse hídrico.
Thesagro:  Fungo; Milho; Solo.
Thesaurus NAL:  Corn; Fungi; Mycorrhizal fungi; Soil water deficit; Vesicular arbuscular mycorrhizae; Water stress.
Categoria do assunto:  X Pesquisa, Tecnologia e Engenharia
URL:  https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1158587/1/Impact-of-Water-Shortage-on-Soil-and-Plant-Attributes-in-the-presence-of-arbuscular-2023.pdf
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Semiárido (CPATSA)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status
CPATSA60760 - 1UPCAP - DD
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