Search Results - "Rangel, A O S S"

Cell membrane damage induced by phenolic acids on wine lactic acid bacteria by Campos, F.M., Couto, J.A., Figueiredo, A.R., Tóth, I.V., Rangel, A.O.S.S., Hogg, T.A.

“…The aim of this work was to investigate the effect of phenolic acids on cell membrane permeability of lactic acid bacteria from wine. Several phenolic acids…”
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Spectrophotometric determination of iron and boron in soil extracts using a multi-syringe flow injection system by Gomes, D.M.C., Segundo, M.A., Lima, J.L.F.C., Rangel, A.O.S.S.

“…In the last decade, significant advances in flow analysis have been reported, namely the extensive use of computer-controlled devices to enhance the autonomy…”
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Biological treatment of a contaminated gaseous emission containing monochlorobenzene by Bastos, F. S. C., Rangel, A. O. S. S., Castro, P. M. L., Jorge, R. M. Ferreira

“…This study presents the operation of a biotrickling filter when treating a monochlorobenzene (MCB) contaminated gaseous emission. Treatment dynamics were…”
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Spectrophotometric determination of nitrite and nitrate in cured meat by sequential injection analysis by Oliveira, S.M, Lopes, T.I.M.S, Rangel, A.O.S.S

“…A robust, automated, labor-saving, accurate, and economical sequential injection system was developed for simultaneous determination of nitrite and nitrate in…”
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A sequential injection system for the in-line digestion and colorimetric determination of phosphorus in milk by REIS LIMA, M. J, FERNANDES, S. M. V, RANGEL, A. O. S. S

“…A sequential injection analysis (SIA) system involving in-line digestion for the determination of total phosphorus in milk is presented. The developed manifold…”
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Spectrophotometric flow injection determination of total phosphorus in beer using on-line UV/thermal induced digestion by Fernandes, S M, Lima, J L, Rangel, A O

“…A flow injection system for the automatic determination of total phosphorus in beer is described. The developed manifold uses a two-stage…”
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Determination of total sulphur dioxide in beer by flow injection spectrophotometry using gas-diffusion and the merging zones technique by Fernandes, S.M.V, Rangel, A.O.S.S, Lima, J.L.F.C

“…A flow injection system for the determination of total sulphur dioxide in beer is described. The methodology involves the same colorimetric reaction of the…”
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Enzymatic determination of ethanol and glycerol by flow injection parallel multi-site detection by Rangel, António O.S.S., Tóth, Ildikó V.

“…A flow injection method was developed for the sequential enzymatic determination of ethanol and glycerol in wines, using immobilised ethanol dehydrogenase and…”
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Sequential injection system for the spectrophotometric determination of reducing sugars in wines by Araújo, Alberto N., Lima, José L.F.C., Rangel, António O.S.S., Segundo, Marcela A.

“…A sequential injection system for the spectrophotometric determination of reducing sugars in wines is described. The methodology is based on the formation of a…”
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A flow system with in-line blank correction applied to the spectrophotometric determination of total iron and chromium (VI) in wastewaters by Morais, I P A, Souto, M R S, Rangel, A O S S

“…A flow system using the sample as the carrier with a propulsion device located after the detector is presented. This approach allows the correction of the…”
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Enzymatic determination of L(+) lactic and L(−) malic acids in wines by flow-injection spectrophotometry by Lima, José L.F.C, Lopes, Teresa I.M.S, Rangel, António O.S.S

“…A flow-injection system for the enzymatic determination of L(+) lactic acid and L(−) malic acid in wines with spectrophotometric detection is described. The…”
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Determination of ethanol in wines by flow injection spectrophotometry using gas-diffusion and an immobilized enzyme reactor by Rangel, A.O.S.S, Toth, I.V

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Merging zones standard addition technique for determinat of copper in beer by flow injection atomic absorption spectrophotometry by FERNANDES, S. M. V, RANGEL, A. O. S. S, LIMA, J. L. F. C

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Construction and use of a tubular picrate ion-selective electrode for reducing sugar determination in Port wine by flow-injection analysis by Lopes, Teresa I.M.S., Rangel, António O.S.S., Lima, JoséL.F.C., Montenegro, M.Conceição B.S.M.

“…A picrate ion-selective electrode without inner reference solution and based on bis(triphenylphosphoranylidene)ammonium picrate dissolved in 2-nitrophenyloctyl…”
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Flow Injection Determination of Sodium, Potassium, Calcium, and Magnesium in Beer by Flame Emission and Atomic Absorption Spectrometry by Fernandes, Sílvia M. V., Rangel, António O. S. S., Lima, José L. F. C.

“…Flow injection systems for the determination of sodium and potassium, by flame emission photometry, and calcium and magnesium, by atomic absorption…”
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Assay of plant tissues for elemental content by flow injection analysis by Lima, José L.F.C., Rangel, António O.S.S., Souto, M. Renata S.

“…For the effective control of the increasing number of agricultural and environmental samples, new and improved analytical procedures are required. The use of…”
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Flow Injection Determination of Nitrate in Vegetables Using a Tubular Potentiometric Detector by Lima, Jose L. F. C, Rangel, Antonio O. S. S, Souto, M. Renata S

“…A flow injection system with potentiometric detection for the determination of nitrate in vegetables was developed. For this purpose a tubular nitrate…”
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Determination of iron in soils by flow injection atomic absorption spectrometry by Ferreira, Alexandra M.R., Rangel, António O.S. S., Lima, José L.F. C.

“…A single-channel flow injection system was optimized for the determination of available iron (Fe) in soil extracts by atomic absorption spectrophotometry. This…”
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Flow injection systems for elemental soil analysis determinations by Ferreira, A.M.R. (Universidade Catolica Portuguesa, Porto, Portugal.), Rangel, A.O.S.S, Lima, J.L.F.C

“…Flow injection analysis (FIA) is becoming an important automated procedure for the elemental analysis of agricultural and environmental samples. This paper…”
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Simultaneous Determination of Potassium and Sodium in Vegetables by Flame Emission Spectrometry Using a Flow-Injection System with Two Dialysis Units by José L. F. C. LIMA, António O. S. S. RANGEL, SOUTO, M. Renata S.

“…A flow-injection (FIA) manifold is described for the simultaneous determination of potassium and sodium in samples of vegetables using flame emission…”
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