scholarly journals Environmental Method to Determine Dopamine and Ascorbic Acid Simultaneously via Derivative Spectrophotometry

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Ahmed M. El-Zohry ◽  
E. Y. Hashem
Keyword(s):  
Ascorbic Acid ◽  
Simultaneous Determination ◽  
Absorption Spectra ◽  
High Precision ◽  
Ph Value ◽  
Hazardous Materials ◽  
Second Derivative ◽  
Derivative Spectroscopy ◽  
Second Derivative Spectroscopy

Many various methods were applied to determine dopamine and ascorbic acid simultaneously using hazardous materials and complex procedures. Derivative absorption spectra can give safely and five sensitive derivative equations that are used for the simultaneous determination of dopamine and ascorbic acid in the UV region, using first and second derivative spectroscopy with high precision at pH value of 9.2. Dopamine and ascorbic acid can be detected in the ranges of 0.375–9.45 mg L−1and 0.352–5.28 mg L−1, respectively. These obtained methods could be used to determine both reagents in real and synthesized samples.

A Rapid, Simultaneous Determination of Paraquat and Diquat in Serum and Urine Using Second-Derivative Spectroscopy

1992 ◽  
Vol 16 (4) ◽  
pp. 214-216 ◽  
Author(s):  
Chiaki Fuke ◽  
Kiyoshi Ameno ◽  
Setsuko Ameno ◽  
Takahiro Kirlu ◽  
Toyohiko Shinohara ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Second Derivative ◽  
Derivative Spectroscopy ◽  
Second Derivative Spectroscopy ◽  
Serum And Urine

scholarly journals Simultaneous Determination of Atenolol and Amlodipine Using Second Derivative Spectroscopy

2019 ◽  
Vol 9 (2) ◽  
pp. 25-29
Author(s):  
Muharram Y. Mohammad ◽  
Mohammad S. Abdullah ◽  
Sangar S. Sabir
Keyword(s):  
Simultaneous Determination ◽  
Standard Method ◽  
Derivative Spectrophotometry ◽  
Second Derivative ◽  
Zero Crossing ◽  
Derivative Spectroscopy ◽  
Second Derivative Spectroscopy ◽  
Crossing Point ◽  
Good Agreement

The present study describes employing second derivative spectrophotometry for simultaneous determination of atenolol and amlodipine in pure form and in commercial formulations. The method is simple, accurate, precise and economic. Zero crossing point technique was used for analysis of the drugs in the combined formulation. The method was found to be linear in the concentration range 5.0-50.0µg/ml of atenolol at 251nm and 5.0-45.0µg/ml of amlodipine at 264nm. The proposed method was successfully applied to determine atenolol and amlodipine in combined dosage as well as in a separate dosage. The obtained results were in good agreement with standard method.  

Simultaneous determination of tyrosine and tryptophan residues in proteins by second-derivative spectroscopy

1982 ◽  
Vol 126 (2) ◽  
pp. 251-257 ◽  
Author(s):  
Luigi Servillo ◽  
Giovanni Colonna ◽  
Ciro Balestrieri ◽  
Raffaele Ragone ◽  
Gaetano Irace
Keyword(s):  
Simultaneous Determination ◽  
Second Derivative ◽  
Derivative Spectroscopy ◽  
Tryptophan Residues ◽  
Second Derivative Spectroscopy

Determination of serum methemalbumin by second-derivative spectroscopy

1982 ◽  
Vol 123 (1-2) ◽  
pp. 121-126 ◽  
Author(s):  
Alain Bertrand ◽  
Claude Cox ◽  
Pierre Foucart ◽  
Jean Buret
Keyword(s):  
Second Derivative ◽  
Derivative Spectroscopy ◽  
Second Derivative Spectroscopy

Determination of tyrosine exposure in proteins by second-derivative spectroscopy

Biochemistry ◽  
1984 ◽  
Vol 23 (8) ◽  
pp. 1871-1875 ◽  
Author(s):  
Raffaele Ragone ◽  
Giovanni Colonna ◽  
Ciro Balestrieri ◽  
Luigi Servillo ◽  
Gaetano Irace
Keyword(s):  
Second Derivative ◽  
Derivative Spectroscopy ◽  
Second Derivative Spectroscopy

scholarly journals Simultaneous Determination of Metoprolol-Hydrochlorothiazide and Propranolol-Hydrochlorothiazide in Combined Formulations by Derivative Spectroscopy

1997 ◽  
Vol 80 (2) ◽  
pp. 325-330 ◽  
Author(s):  
Challapalli V N Prasad ◽  
Vipin Bharadwaj ◽  
Vidya Narsimhan ◽  
Rama T Chowdhary ◽  
Pyare Parimoo
Keyword(s):  
Simultaneous Determination ◽  
Second Derivative ◽  
Zero Crossing ◽  
Derivative Spectra ◽  
Derivative Spectroscopy ◽  
Naoh Solution ◽  
Compensation Technique ◽  
Second Derivative Spectra ◽  
Crossing Point

Abstract A derivative spectrophotometric procedure was established for simultaneous determination of propranolol HCI (PP) with hydrochlorothiazide (HTZ) and metoprolol tartrate (MTP) with HTZ in tablet preparations. The method uses first- and second-derivative spectra of tablet extract in 0.01 N NaOH solution. Ratios of analyte concentrations in the mixture were determined by the compensation technique. The zero-crossing point (ZCP) was also used to estimate the amounts of PP and HTZ in the formulations, and results were compared with those from the compensation technique. The results were found to be precise and free from interferences.

Sign in / Sign up

Export Citation Format

Share Document