Extension of the standard addition method by blank addition

Extension of the standard addition method by blank addition.

Standard addition involves adding varying amounts of the analyte to sample portions of fixed mass or fixed volume and submitting those portions to the sample preparation procedure. After measuring the final extract solutions, the observed signals are linearly regressed on the spiked amounts. The original unknown amount is estimated by the opposite of the abscissa intercept of the fitted straigh...

Simultaneous Spectrophotometric Determination of Vanadium(V) and Iron(III) in Micellar Medium by H-Point Standard Addition Method

H-Point Standard Addition Method (HPSAM) was applied for the simultaneous determination of V(V) and Fe(III). The method is based on the complex formation of V(V) and Fe(III) with chromazurol S (CAS) in acidic media and in the presence of cetyltrimethylammonium bromide (CTAB) as a micellizing agent. Acidic media and the presence of a micellar system improve selectivity and sensitivity. Fe (I...

simultaneous spectrophotometric determination of amlodipine and atorvastatin in commercial tablet by h-point standard addition method

Standard Addition Method for the Determination of 1 Pharmaceutical Residues in Drinking Water by Spe-

21 The study of the occurrence and fate of pharmaceutical compounds in drinking or waste 22 water processes has become very popular in recent years. LC-MS/MS is a powerful 23 analytical tool often used to determine pharmaceutical residues at trace level in water. 24 However, many steps may disrupt the analytical procedure and bias the results. A list of 27 25 environmentally relevant molecules,...

Simultaneous kinetic spectrophotometric determination of citric and ascorbic acid by H-point standard addition method

The H-point standard addition method was applied to kinetic data for simultaneous determination of citric and ascorbic acid or selective determination of ascorbic acid in presence of citric acid. The method is based on the difference in the rate of reaction of citric and ascorbic acid with copper(II)-ammonia complex. The linear dynamic ranges for the two analytes of citric and ascorbic acid are...