Analytical Method: Tartaric acid in water

Reagents:
Cat.No. 101512  Silver nitrate for analysis
Cat.No. 100063  Acetic acid 100 % for analysis
Cat.No. 116754  Water for analysis
Cat.No. 109137  Sodium hydroxide solution 1 mol/l
Cat.No. 106268  Sodium acetate for analysis
Clarocarbon G
Ammonium vanadate for analysis
 
Reagent 1:
Dissolve 1.7 g silver nitrate in 20 ml water for analysis, add 30 ml acetic acid and make up to mark with water for analysis in a 100-ml volumetric flask.
 
Reagent 2:
Clarocarbon G
 
Reagent 3:
Dissolve 1.0 g ammonium vanadate in 15 ml sodium hydroxide solution 1 mol/l. Add 5.4 g sodium acetate and make up to mark with water for analysis in a 100-ml volumetric flask.
 
Measurement range:
0.20 - 3.50 mg/l tartaric acid at cell length of 10 mm and 445/446 nm
 
Analysis:
Mix 3.0 ml sample with 10 ml reagent 1. Add 0.5 g reagent 2 and shake. Add 10 ml reagent 3 and mix and filter off the carbon using a folded filter. Measure the clear particle-free filtrate against water at 445 nm (in the photometer SQ 118 at 446 nm).
 
Literature:
A. Schmitt: Aktuelle Weinanalytik, 2. Auflage 1983. Verlag Heller Chemie- und Verwaltungs-gesellschaft mbH. Schwäbisch-Hall
 

 

 
Parameter list for programming the photometer Spectroquant® NOVA 60, NOVA 400, Pharo 100, and
Pharo 300

Method number ----
Method-designation Tartaric acid
Wavelength 445 nm
Citation Tartaric acid
Units mg/l
Resolution 0.01
Zero point (E0) 0.000
Slope (E/C) 0.926
Meas. range begin 0.20
Meas. range end 3.50
Reference cell 10 mm


Calculation when measuring the absorbance value using the above NOVA photometers without programming the method in the memory of the instrument:

Measured absorbance
of samples in A
Result in mg/l
[A sample * 1 / 0.926]
1.000 1.08



Parameter list for programming the photometer SQ 118

01 Method Tartaric acid
02 Cat.No. -------
03 Measuring range 0.2 - 3.50
04 Units mg/l
05 Reaction time 0 0 min
06 Cell 10 mm
07 Wavelength 446 nm
08 Calibration Factor
09 Evaluation Linear
10 Factor 1.08

 

 
Calculation when measuring the absorbance value using the photometer SQ118 without programming the method in the memory of the instrument:

Measured absorbance
of samples in A
Result in mg/l
[A sample * 1.08]
1.000 1.08

Materials

     
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