Author Search Results

1

Spectrophotometric Determination of Aluminium in Iron Ores Using Solid-Phase Extraction

by Ferreira,Sérgio Luis Costa

Published 1998

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2

Preconcentration and Determination of Copper and Zinc in Natural Water Samples by ICP-AES After Complexation and Sorption on Amberlite XAD-2

by Ferreira,Sérgio Luis Costa

Published 1998

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3

19th Brazilian meeting on analytical chemistry

by Ferreira, Sérgio Luís Costa

Published 2020

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4

Multivariate optimization and validation of an analytical method for the determination of cadmium in wines employing ET AAS

by Ferreira, Sérgio Luis Costa

Published 2009

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5

Aluminium as chemical modifier for the determination of lead in sugar cane spirits using electrothermal atomic absorption spectrometry

by Ferreira, Sergio Luis Costa

Published 2011

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6

Application of Doehlert designs for optimisation of an on-line preconcentration system for copper determination by flame atomic absorption spectrometry

by Ferreira, Sergio Luis Costa

Published 2003

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7

Development of method for the speciation of inorganic iron in wine samples

by Ferreira, Sergio Luis Costa

Published 2007

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8

Use of 1-(2-thiazolylazo) 2-naphthol in rapid determination of iron in geological matrices

by Ferreira, Sergio Luis Costa

Published 1994

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9

Spectrophotometric and derivative spectrophotometric determination of aluminium with Hydroxynaphthol Blue

by Ferreira, Sergio Luis Costa

Published 1994

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10

Application of Doehlert matrix and factorial designs in optimization of experimental variables associated with preconcentration and determination of molybdenum in sea-water by indu...

by Ferreira, Sergio Luis Costa

Published 2002

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11

Application of factorial designs and Doehlert matrix in optimization of experimentalvariabl es associated with the preconcentration and determination of vanadium and copper in seaw...

by Ferreira, Sergio Luis Costa

Published 2002

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12

Spectrophotometric Determination of Aluminium in Iron Ores Using Solid-Phase Extraction

by Ferreira, Sergio Luis Costa

Published 1998

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13

Spectrophotometric determination of zinc in copper-base alloys with TAN

by Ferreira, Sergio Luis Costa

Published 1995

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14

Use of 1-(2-thiazolylazo) 2-naphthol in rapid determination of iron in geological matrices

by Ferreira, Sergio Luis Costa

Published 1994

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15

Spectrophotometric and derivative spectrophotometric determination of aluminium with Hydroxynaphthol Blue

by Ferreira, Sergio Luis Costa

Published 1994

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16

The determination of molybdenum in water and biological samples by graphite furnace atomic spectrometry after polyurethane foam column separation and preconcentration

by Ferreira, Sergio Luis Costa

Published 2003

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17

Sensitive spectrophotometric determination of ascorbic acid in fruit juices and pharmaceutical formulations using 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (Br-PADAP)

by Ferreira, Sergio Luis Costa

Published 1997

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18

Spectrophotometric determination of nickel in copper-base alloy with 2-(2-thiazoly lazo)-p -cresol

by Ferreira, Sergio Luis Costa

Published 1988

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19

The chemical generation of NO for the determination of nitrite by high-resolution continuum source molecular absorption spectrometry

by Ferreira, Sergio Luis Costa

Published 2012

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20

Factorial design for multivariate optimization of an on-line preconcentration system for platinum determination by ultrasonic nebulization coupled to inductively coupled plasma opt...

by Ferreira, Sergio Luis Costa

Published 2004

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