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51

Simultaneous flow injection determination of ammoniacal nitrogen and chloride in industrial effluent water with a combined on-line gas diffusion/dialyser unit

Jacobus F. Staden, Cornelius J. Hattingh, Daniel Malan

Journal:

Analytical and Bioanalytical Chemistry

Year:

1995

Language:

english

File:

PDF, 476 KB

english, 1995

52

Determination of silver in photographic material by flow-injection analysis with a coated tubular solid-state silver sulphide ion-selective electrode as detector

Jacobus F. Staden

Journal:

Analytical and Bioanalytical Chemistry

Year:

1988

Language:

english

File:

PDF, 441 KB

english, 1988

53

Simultaneous determination of sodium, potassium, magnesium and calcium in surface, ground and domestic water by flow-injection analysis

Willem D. Basson, Jacobus F. Staden

Journal:

Analytical and Bioanalytical Chemistry

Year:

1980

Language:

english

File:

PDF, 1.11 MB

english, 1980

54

Automated turbidimetric determination of sulphate in surface, ground and domestic water by flow-injection analysis

Jacobus F. Staden

Journal:

Analytical and Bioanalytical Chemistry

Year:

1982

Language:

english

File:

PDF, 264 KB

english, 1982

55

On-line sulphate monitoring by reversed flow injection analysis and alternating reagent injection

Jacobus F. Staden

Journal:

Analytical and Bioanalytical Chemistry

Year:

1987

Language:

english

File:

PDF, 290 KB

english, 1987

56

Determination of creatinine in urine and serum by flow-injection analysis using the Jaffé reaction

Jacobus F. Staden

Journal:

Analytical and Bioanalytical Chemistry

Year:

1983

Language:

english

File:

PDF, 368 KB

english, 1983

57

Preparation and performance of a coated tubular solid-state lead(II)-selective electrode in flow-injection analysis

Jacobus F. Staden

Journal:

Analytical and Bioanalytical Chemistry

Year:

1989

Language:

english

File:

PDF, 503 KB

english, 1989

58

Automated prevalve dilution in flow-injection analysis

Jacobus F. Staden

Journal:

Analytical and Bioanalytical Chemistry

Year:

1985

Language:

english

File:

PDF, 527 KB

english, 1985

59

Incorporation of a coated tubular solid-state iodide-selective electrode into the conduits of a flow-injection system

Jacobus F. Staden

Journal:

Analytical and Bioanalytical Chemistry

Year:

1986

Language:

english

File:

PDF, 498 KB

english, 1986

60

On-line quality control in concentrated hydrochloric acid production plants

Jacobus F. van Staden

Journal:

Analytical and Bioanalytical Chemistry

Year:

1987

Language:

english

File:

PDF, 276 KB

english, 1987

61

Automated prevalve sample filtration in flow injection analysis: Determination of sulphate in water removing suspended solids and colour before sampling

Jacobus F. Staden

Journal:

Analytical and Bioanalytical Chemistry

Year:

1982

File:

PDF, 294 KB

1982

62

Preparation and performance of a coated tubular solid-state cadmium-selective electrode in flow-injection analysis

Jacobus F. van Staden

Journal:

Analytical and Bioanalytical Chemistry

Year:

1988

Language:

english

File:

PDF, 465 KB

english, 1988

63

Estimation of uncertainties in clinical analysis

R. I. Stefan, George Emil Baiulescu, Hassan Y. Aboul-Enein, Jacobus F. van Staden

Journal:

Accreditation and Quality Assurance

Year:

1999

Language:

english

File:

PDF, 53 KB

english, 1999

64

A model predictive control strategy for load shifting in a water pumping scheme with maximum demand charges

Adam Jacobus van Staden, Jiangfeng Zhang, Xiaohua Xia

Journal:

Year:

2011

Language:

english

File:

PDF, 1.08 MB

english, 2011

65

Amperometric biosensor based on diamond paste for the enantioanalysis of l-lysine

Raluca-Ioana Stefan-van Staden, R’afat Mahmoud Nejem, Jacobus Frederick van Staden, Hassan Y. Aboul-Enein

Journal:

Biosensors and Bioelectronics

Year:

2012

Language:

english

File:

PDF, 191 KB

english, 2012

66

Amperometric dot-sensors based on zinc porphyrins for sildenafil citrate determination

Simona-Cornelia Balasoiu, Raluca-Ioana Stefan-van Staden, Jacobus Frederick van Staden, Rodica-Mariana Ion, Gabriel-Lucian Radu, Hassan Y. Aboul-Enein

Journal:

Electrochimica Acta

Year:

2011

Language:

english

File:

PDF, 742 KB

english, 2011

67

Sequential injection spectrophotometric determination of etilefrine hydrochloride

Negussie W. Beyene, Jacobus F. van Staden, Raluca I. Stefan

Journal:

Year:

2004

Language:

english

File:

PDF, 273 KB

english, 2004

68

Determination of isoxsuprine hydrochloride by sequential injection visible spectrophotometry

Negussie W. Beyene, Jacobus F. Van Staden, Raluca-Ioana Stefan, Hassan Y. Aboul-Enein

Journal:

Year:

2005

Language:

english

File:

PDF, 296 KB

english, 2005

69

Determination of fluoride in toothpaste, effluent streams and natural and borehole water using a flow injection system with a fluoride-selective membrane electrode

Raluca-Ioana Stefan, Jacobus F van Staden, Hassan Y Aboul-Enein

Journal:

Pharmaceutica Acta Helvetiae

Year:

1999

Language:

english

File:

PDF, 60 KB

english, 1999

70

Determination of l-carnitine using enantioselective, potentiometric membrane electrodes based on macrocyclic antibiotics

Alexander A Rat’ko, Raluca-Ioana Stefan, Jacobus (Koos) F van Staden, Hassan Y Aboul-Enein

Journal:

Year:

2004

Language:

english

File:

PDF, 83 KB

english, 2004

71

Utilization of maltodextrin based enantioselective, potentiometric membrane electrodes for the enantioselective assay of S-perindopril

Kenneth I. Ozoemena, Raluca-Ioana Stefan, Jacobus F. van Staden, Hassan Y. Aboul-Enein

Journal:

Year:

2004

Language:

english

File:

PDF, 88 KB

english, 2004

72

Sequential injection spectrophotometric determination of phenylephrine hydrochloride in pharmaceutical preparations

Negussie W Beyene, Jacobus F Van Staden

Journal:

Year:

2004

Language:

english

File:

PDF, 99 KB

english, 2004

73

Simultaneous determination of l-thyroxine (l-T4), d-thyroxine (d-T4), and l-triiodothyronine (l-T3) using a sensors/sequential injection analysis system

Raluca-Ioana Stefan, Jacobus F. van Staden, Hassan Y. Aboul-Enein

Journal:

Year:

2004

Language:

english

File:

PDF, 73 KB

english, 2004

74

Sequential injection spectrophotometric determination of iron as Fe(II) in multi-vitamin preparations using 1,10-phenanthroline as complexing agent

Zeriet O. Tesfaldet, Jacobus F. van Staden, Raluca I. Stefan

Journal:

Year:

2004

Language:

english

File:

PDF, 131 KB

english, 2004

75

Macrocyclic antibiotics as chiral selectors in the design of enantioselective, potentiometric membrane electrodes for the determination of l- and d-enantiomers of methotrexate

Alexander A. Rat’ko, Raluca-Ioana Stefan, Jacobus (Koos) F. van Staden, Hassan Y. Aboul-Enein

Journal:

Year:

2004

Language:

english

File:

PDF, 85 KB

english, 2004

76

Sequential injection spectrophotometric determination of trace amounts of iodide by its catalytic effect on the 4,4′-methylenebis(N,N-dimethylaniline)-chloramine-T reaction

Zeriet O. Tesfaldet, Jacobus F. van Staden, Raluca I. Stefan

Journal:

Year:

2004

Language:

english

File:

PDF, 136 KB

english, 2004

77

Spectrophotometric determination of magnesium in pharmaceutical preparations by cost-effective sequential injection analysis

Zeriet O. Tesfaldet, Jacobus F. van Staden, Raluca I. Stefan

Journal:

Year:

2004

Language:

english

File:

PDF, 149 KB

english, 2004

78

Enantioanalysis of l-2-hydroxyglutaric acid in urine samples using enantioselective, potentiometric membrane electrodes based on maltodextrins

R’afat Mahmoud Nejem, Raluca-Ioana Stefan, Jacobus Frederick van Staden, Hassan Y. Aboul-Enein

Journal:

Year:

2005

Language:

english

File:

PDF, 74 KB

english, 2005

79

Sequential injection spectrophotometric determination of ritodrine hydrochloride using 4-aminoantipyrine

Jacobus F. van Staden, Negussie W. Beyene, Raluca-Ioana Stefan, Hassan Y. Aboul-Enein

Journal:

Year:

2005

Language:

english

File:

PDF, 218 KB

english, 2005

80

Application of porphyrins in flow-injection analysis: A review

Jacobus F. van Staden, Raluca I. Stefan-van Staden

Journal:

Year:

2010

Language:

english

File:

PDF, 310 KB

english, 2010

81

METABOLIC DEFECTS CAUSED BY TREATMENT WITH THE TETRAHYDROPYRIDINE ANALOG OF HALOPERIDOL (HPTP), IN BABOONS

Lodewyk J Mienie, Jacobus J Bergh, Etienne Van Staden, Stefanus J Steyn, Susan M Pond, Neal Castagnoli Jr., Cornelis J Van der Schyf

Journal:

Year:

1997

Language:

english

File:

PDF, 1.24 MB

english, 1997

82

Simultaneous detection of S and R captopril using sequential injection analysis

Raluca-Ioana Stefan, Jacobus (Koos) F. van Staden, Hassan Y. Aboul-Enein

Journal:

Year:

2000

Language:

english

File:

PDF, 605 KB

english, 2000

83

Immunosensor for the determination of azidothymidine: Its utilization as detector in a sequential injection analysis system

Raluca-Ioana Stefan, Rahel Girmai Bokretsion, Jacobus Frederick van Staden, Hassan Y Aboul-Enein

Journal:

Year:

2003

Language:

english

File:

PDF, 112 KB

english, 2003

84

Simultaneous determination of creatine and creatinine using amperometric biosensors

Raluca-Ioana Stefan, Rahel Girmai Bokretsion, Jacobus F van Staden, Hassan Y Aboul-Enein

Journal:

Year:

2003

Language:

english

File:

PDF, 173 KB

english, 2003

85

Determination of l- and d-enantiomers of methotrexate using amperometric biosensors

Raluca-Ioana Stefan, Rahel Girmai Bokretsion, Jacobus F van Staden, Hassan Y Aboul-Enein

Journal:

Year:

2003

Language:

english

File:

PDF, 193 KB

english, 2003

86

A new construction for a potentiometric, enantioselective membrane electrode—its utilization to the S-captopril assay

Raluca-Ioana Stefan, Jacobus (Koos) F van Staden, Hassan Y Aboul-Enein

Journal:

Year:

1999

Language:

english

File:

PDF, 76 KB

english, 1999

87

Evaluation of different SIA sample–buffer configurations using a fluoride-selective membrane electrode as detector

Jacobus (Koos) F van Staden, Raluca-Ioana Stefan, Semaghiul Birghila

Journal:

Year:

2000

Language:

english

File:

PDF, 145 KB

english, 2000

88

Determination of phosphorus (P2O5) as molybdovanadophosphoric acid in phosphate rock with a flow-injection procedure

Willem D. Basson, Jacobus F. Staden, Peter M. Cattin

Journal:

Analytical and Bioanalytical Chemistry

Year:

1981

Language:

english

File:

PDF, 680 KB

english, 1981

89

Enantioanalysis of Pipecolic Acid with Stochastic and Potentiometric Microsensors

Stefan-van Staden, Raluca-Ioana, Moldoveanu, Iuliana, Sava, Daniel-Florin, Kapnissi-Christodoulou, Constantina, van Staden, Jacobus Frederick

Journal:

Year:

2013

Language:

english

File:

PDF, 110 KB

english, 2013

90

Prediction of FIA peak width for a flow-injection manifold with spectrophotometric or ICP detection

Phillip Lyle Kempster, Henk Robert van Vliet, Jacobus Frederick van Staden

Journal:

Year:

1989

Language:

english

File:

PDF, 330 KB

english, 1989

91

Simultaneous flow-injection analysis of three components with on-line dialyzers in series. Determination of sodium, potassium and chloride in blood serum

Jacobus F. van Staden

Journal:

Year:

1991

Language:

english

File:

PDF, 705 KB

english, 1991

92

Flow-injection analysis systems with different detection devices and other related techniques for the in vitro and in vivo determination of dopamine as neurotransmitter. A review

Jacobus F van Staden, Raluca I Stefan van Staden

Journal:

Year:

2012

Language:

english

File:

PDF, 804 KB

english, 2012

93

Wireless Electrochemical Sensors: A Tool for Process Control Past, Present and the Future

van Staden, Jacobus F., Stefan-van Staden, Raluca I., Balasoiu, Simona C.

Journal:

Critical Reviews in Analytical Chemistry

Year:

2010

Language:

english

File:

PDF, 249 KB

english, 2010

94

Analysis of Several Angiotensin-Converting Enzyme Inhibitors using Potentiometric, Enantioselective Membrane Electrodes

Aboul-Enein, Hassan Y., Stefan, Raluca-Ioana, van Staden, Jacobus F.

Journal:

Analytical Letters

Year:

1999

Language:

english

File:

PDF, 335 KB

english, 1999

95

SPIE Proceedings [SPIE Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies - Constanta, Romania (Thursday 26 August 2010)] Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies V - Porphyrins as molecular nanomaterials

Faraon, Victor, Ion, Rodica-Mariana, Pop, Simona-Florentina, Van-Staden, Raluca, Van-Staden, Jacobus-Frederick, Schiopu, Paul, Caruntu, George

Year:

2010

Language:

english

File:

PDF, 1.06 MB

english, 2010

96

Piroxicam Benzoate—Synthesis, HPLC Determination, and Hydrolysis

Boneschans, Barend, Wessels, Anita, van Staden, Johan, Zovko, Marijana, Zorc, Branka, Bergh, Jacobus

Journal:

Drug Development and Industrial Pharmacy

Year:

2003

Language:

english

File:

PDF, 216 KB

english, 2003

97

Influence of sulfate and nitrate uptake from aqueous solutions on surface exchange in Purolite A-520E resin

Stefan, Daniela-Simina, Frederick van Staden, Jacobus, Vasile, Eugeniu, Vasile, Otilia-Ruxandra, Dancila, Madelene

Journal:

Comptes Rendus Chimie

Year:

2014

Language:

english

File:

PDF, 1.88 MB

english, 2014

98

Microelectrodes based on porphyrins for the determination of ascorbic acid in pharmaceutical samples and beverages

Stefan-van Staden, Raluca-Ioana, Balasoiu, Simona Cornelia, van Staden, Jacobus Frederick, Radu, Gabriel-Lucian

Journal:

Journal of Porphyrins and Phthalocyanines

Year:

2012

Language:

english

File:

PDF, 1.84 MB

english, 2012

99

Pattern recognition of neurotransmitters using multimode sensing

Stefan-van Staden, Raluca-Ioana, Moldoveanu, Iuliana, van Staden, Jacobus Frederick

Journal:

Journal of Neuroscience Methods

Year:

2014

Language:

english

File:

PDF, 1.17 MB

english, 2014

100

Screening of children saliva samples for bisphenol A using stochastic, amperometric and multimode microsensors

Stefan-van Staden, Raluca-Ioana, Gugoaşă, Livia Alexandra, Calenic, Bogdan, van Staden, Jacobus F., Legler, Juliette

Journal:

Analytical Chemistry Research

Year:

2014

Language:

english

File:

PDF, 516 KB

english, 2014