As a conclusion of the studies on the spectrophotometric method using 2,2,-dipyridyl ketoxime, it is suggested a technique for the cobalt determination in plants. The method, as it is proposed, presents both precision and accuracy sonsidered satisfactory, and the least relative error of the concentration is obtained in the range from 0,9 to 9,0 or 1,0 to 10,0 microgrames of cobalt in 3ml of solvent. It follows Beer's law and the molar absorptivity of the compound is 17.685. The results of cobalt determination in several vegetables are presented.Os resultados obtidos nos estudos da parte experimental do método da 2,2'-dipiridil cetoxima, permitiriam o estabelecimento de uma técnica para a determinação do cobalto em plantas. A aplicação do mé...
The present work reports a study of the chelatometric method (by EDTA titration) for determining cal...
O presente trabalho relata os estudos do método colorimétrico de determinação do silício, baseado na...
Nitrate in soils and plants can be determined by the method of ultraviolet absorption of nitrowyl ch...
Complementando os estudos da parte experimental do método da 2,2'-dipididil cetoxima para a determin...
The initial studies are presented, relative to the experimental part of the method of the 2,2'-dypir...
This paper belongs to a series of articles about the 2,2'-dipyridyl ketoxime method for the espectro...
É apresentada uma adaptação dos métodos de dosagem de cobalto e cobre em materiais biológicos, consi...
The determinations of zinc and copper in fertilizers by atomic absorption spectrophotometry are not ...
This paper describe the analytical methods employed for the determination of copper, zinc, iron, man...
This paper reports a study about the determination of inorganic constituents (calcium, magnesium, po...
This paper describes a study about the quantitative separation of cations and anions of the aqueous ...
Buffer solutions SMP, diluted (1+1) SMP, diluted Woodruff (1+2), calcium acetate 0.50 - 0.25 and 0.1...
O presente trabalho descreve os estudos desenvolvidos com o objetivo de adaptar o método volumétrico...
A spectrophotometric method, based on the color with chromotropic acid is described for the determin...
This paper describes the date obtained in the determination of the soil carbon by two methods. The d...
The present work reports a study of the chelatometric method (by EDTA titration) for determining cal...
O presente trabalho relata os estudos do método colorimétrico de determinação do silício, baseado na...
Nitrate in soils and plants can be determined by the method of ultraviolet absorption of nitrowyl ch...
Complementando os estudos da parte experimental do método da 2,2'-dipididil cetoxima para a determin...
The initial studies are presented, relative to the experimental part of the method of the 2,2'-dypir...
This paper belongs to a series of articles about the 2,2'-dipyridyl ketoxime method for the espectro...
É apresentada uma adaptação dos métodos de dosagem de cobalto e cobre em materiais biológicos, consi...
The determinations of zinc and copper in fertilizers by atomic absorption spectrophotometry are not ...
This paper describe the analytical methods employed for the determination of copper, zinc, iron, man...
This paper reports a study about the determination of inorganic constituents (calcium, magnesium, po...
This paper describes a study about the quantitative separation of cations and anions of the aqueous ...
Buffer solutions SMP, diluted (1+1) SMP, diluted Woodruff (1+2), calcium acetate 0.50 - 0.25 and 0.1...
O presente trabalho descreve os estudos desenvolvidos com o objetivo de adaptar o método volumétrico...
A spectrophotometric method, based on the color with chromotropic acid is described for the determin...
This paper describes the date obtained in the determination of the soil carbon by two methods. The d...
The present work reports a study of the chelatometric method (by EDTA titration) for determining cal...
O presente trabalho relata os estudos do método colorimétrico de determinação do silício, baseado na...
Nitrate in soils and plants can be determined by the method of ultraviolet absorption of nitrowyl ch...