Colorimetric Determination of Free Salicylic Acid in Aspirin and Urine by Scanometry as a New, Reliable, Inexpensive and Simple Method

2017 ◽  
Vol 51 (4) ◽  
pp. 324-329 ◽  
Author(s):  
Ardeshir Shokrollahi ◽  
Zahra Mohammadpour ◽  
Abdolkarim Abbaspour
Keyword(s):  
Salicylic Acid ◽  
Colorimetric Determination ◽  
Simple Method

Rapid Colorimetric Method for Estimation of Thiram Residues on Grains

1970 ◽  
Vol 53 (3) ◽  
pp. 519-522
Author(s):  
J R Rangaswamy ◽  
P Poornima ◽  
S K Majumder
Keyword(s):  
Colorimetric Method ◽  
Cuprous Chloride ◽  
Colorimetric Determination ◽  
Simple Method

Abstract A rapid and relatively simple method has been developed for the colorimetric determination of thiram residues on grains. Cuprous chloride is used to form a yellow complex with thiram, which is measured at 420 nm. The method is satisfactory for analyses of 4–200 Mg thiram.

scholarly journals A simple method for colorimetric determination of alkylbenzene sulfonate

1974 ◽  
Vol 23 (6) ◽  
pp. 650-653 ◽  
Author(s):  
Takashi TANAKA ◽  
Kazuo HIIRO ◽  
Akinori KAWAHARA
Keyword(s):  
Colorimetric Determination ◽  
Simple Method ◽  
Alkylbenzene Sulfonate

Use of silver triangular nanoparticles for the colorimetric determination of ammonium persulfate concentration in water-borne adhesives for cigarettes

2016 ◽  
Vol 8 (7) ◽  
pp. 1483-1488 ◽  
Author(s):  
Yanqun Xu ◽  
Anyi Chen ◽  
Ruizhi Zhu ◽  
Naiding Wang ◽  
Zhigang Tai ◽  
...  
Keyword(s):  
Ammonium Persulfate ◽  
Colorimetric Determination ◽  
Simple Method ◽  
Water Borne

In this work, a simple method for detecting ammonium persulfate using silver triangular nanoparticles (silver TNPs) was developed.

Improved Colorimetric Determination of Salicylic Acid and Its Metabolites in Urine

1975 ◽  
Vol 21 (8) ◽  
pp. 1167-1168 ◽  
Author(s):  
Nagy A Farid ◽  
Gordon S Born ◽  
Wayne V Kessler ◽  
S M Shaw ◽  
W E Lange
Keyword(s):  
Salicylic Acid ◽  
Sodium Salicylate ◽  
Nitrate Solution ◽  
Ethylene Dichloride ◽  
Ferric Nitrate ◽  
Colorimetric Determination ◽  
Improved Method ◽  
Salicyluric Acid ◽  
Sample Recovery

Abstract We describe an improvement in the Levy and Procknal method [J. Pharm. Sci. 57, 1330 (1968)] for determination of salicylic acid and its metabolites in urine. Salicylic acid and salicyluric acid are successively extracted from 1 or 2 ml of urine (acidified with HCl) by two 10-ml portions each of carbon tetrachloride and ethylene dichloride. The extracts of each solvent are shaken with 5 ml of ferric nitrate solution (a 10-fold dilution of 17 g of Fe(NO3)3·9H2O in 1 liter of 70 mmol/liter HNO3). The aqueous phases are centrifuged and their absorbances measured at 530 nm. For total salicylate, 3 ml of urine and 3 ml of HCl are heated in a partially evacuated serum vial at 100 °C for 16 h and then salicylic acid is assayed in the hydrolyzed sample. Recovery of a weighed oral dose of sodium salicylate in urine was 105.4%; it was 127.9% by the Levy and Procknal method for the same sample. The improved method is faster and more accurate.

Improved Colorimetric Determination of Aspirin and Salicylic Acid Concentrations in Human Plasma

1978 ◽  
Vol 67 (2) ◽  
pp. 289-291 ◽  
Author(s):  
I.A. Muni ◽  
J.L. Leeling ◽  
R.J. Helms ◽  
N. Johnson ◽  
J.J. Bare ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Human Plasma ◽  
Colorimetric Determination
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