University of North Florida
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Contact Info

Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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Bernard Griepink

Abbrev:
Griepink, B.
Other Names:
Address:
European Commission, DG 1A, 200, rue de la Loi, B-1049 Brussels, Belgium
Phone:
(32-2) 295-8812
Fax:
NA

Citations 6

"Flow Analysis For The Determination Of The Main Components Of Waters, Rain Water And Drinking Water"
Fresenius J. Anal. Chem. 1983 Volume 314, Issue 7 Pages 627-633
H. F. R. Reijnders, P. H. A. M. Melis und B. Griepink

Abstract: A survey of the literature concerning flow-through determination of the main components in various types of water is given. These components are: alkalinity, chloride, nitrite, nitrate, phosphate, sulphate, ammonium, potassium, lithium, sodium, barium, calcium, magnesium and strontium. Details with regard to e.g. type of water, range of the method, interferences etc. are given in a separate compilation which is available from the editor upon request.
Alkalinity Ammonium Barium Calcium Chloride Lithium Magnesium Nitrate Nitrite Phosphate Potassium Sodium Strontium Sulfate Water Rain Review

"Flow-through Determination Of Sulfate In Water Using Different Methods: A Comparison"
Fresenius J. Anal. Chem. 1980 Volume 300, Issue 4 Pages 273-276
H. F. R. Reijnders, J. F. van Staden, and B. Griepink

Abstract: Sulphate was determined in various kinds of environmental samples using a continuous-flow system, a flow-injection system or a flow-through titrimeter. The reagents in the three cases consisted basically of DMSA(III), KNO3 and Ba(ClO4)2. The results of the three methods were evaluated statistically. A comparison of the three methods is given. The advantage of the DSMA(III)-methods is shown in a comparison with the commonly used thorin method.
Sulfate Water Spectrophotometry

"Titrimetry In A Continuous-flow System. 4. Determination Of Alkalinity Of Environmental Samples"
Fresenius J. Anal. Chem. 1979 Volume 298, Issue 2-3 Pages 155-156
H. F. R. Reijnders, J. J. van Staden and B. Griepink

Abstract: UFL
Alkalinity pH Environmental Environmental Spectrophotometry Titrations

"Flow Injection Determination Of Sulfate In Environmental Samples Using Dimethylsulfonazo(III) As Indicator"
Fresenius J. Anal. Chem. 1979 Volume 295, Issue 5 Pages 410-412
H. F. R. Reijnders, J. J. van Staden and B. Griepink

Abstract: SO42- is determined in flowing percolation water, potable water, and rainwater by injection of a colorimetric reagent containing dimethylsulfonazo III into a flow-through cuvette of a recording photometer.
Sulfate Rain Ground Water Spectrophotometry

"Titrimetry In A Continuous-flow System. 3. Calcium Determination In Environmental Samples"
Fresenius J. Anal. Chem. 1979 Volume 295, Issue 5 Pages 409-410
H. F. R. Reijnders, J. J. van Staden and B. Griepink

Abstract: UFL
Calcium Environmental Spectrophotometry Titrations

"Photometry In A Continuous-flow System. Determination Of Sulfate In A Continuous-flow System In Environmental Samples With Dimethylsulfonazo(III)"
Fresenius J. Anal. Chem. 1979 Volume 295, Issue 2 Pages 122-124
H. F. R. Reijnders, J. J. van Staden, and B. Griepink

Abstract: Sulphate in various environmental samples was determined by measuring the optical absorbance upon reaction with the barium(II) dimethylsulphonazo(III) complex. The measurement took place in a flow-through system. Interferences from phosphate, metal ions and others were eliminated. The results of a turbidimetric measurement, a spectrophotometric measurement with thorin, an automatic titration and the proposed method are compared. The latter allows the determination of sulphate in the range of 1.4-60 µmol L-1. The standard deviation is 0.3-0.6 µmol L-1, depending on the type of sample (water) analyzed. A determination takes 1.5 min.
Sulfate Environmental Spectrophotometry Interferences Method comparison