Standard addition method by mass and its application.

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...

construction and validation of translation metacognitive strategy questionnaire and its application to translation quality

like any other learning activity, translation is a problem solving activity which involves executing parallel cognitive processes. the ability to think about these higher processes, plan, organize, monitor and evaluate the most influential executive cognitive processes is what flavell (1975) called “metacognition” which encompasses raising awareness of mental processes as well as using effectiv...

Application of H-Point Standard Addition Method for Simultaneous Spectrophotometric Determination of Hydrochlorothiazide and Propranolol

A aplicação do método de adição padrão no ponto H para solucionar os espectros sobrepostos de hidroclorotiazida e propranolol foi avaliado. Os resultados mostram que o método HPSAM pode ser aplicado para a determinação simultânea dos compostos, em meio aquoso. Os resultados da aplicação do HPSAM mostraram que as duas drogas podem ser determinadas simultaneamente, numa razão de concentração hidr...

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