A second‐order standard addition method with application to calibration of a kinetics–spectroscopic sensor for quantitation of trichloroethylene

Abstract

SUMMARYPresented here is an algorithm for analysis of second order data by the method of standard additions. The method of standard additions is applicable when matrix effects make traditional calibration unreliable. The algonthm employs a generalized eigenproblem to mathematically separate the instrument response of the analyte from the instrument response of any interfering species. A scheme for determining the eigenvectors (and hence the concentration estimate) that uniquely correspond to the analyte of interest is given. These eigenvectors can readily be distinguished from any eigenvector that corresponds to the spectmm of the interferents or both the interferents and analyte. The stability of the estimated analyte concentration is verified by Monte Carlo simulations. The algorithm is applied to the analysis of mchloroethylene in samples that have mamx effects caused by an interaction with chloroform.

Voltammetric Electronic Tongue in the Analysis of Cava Wines

“…For the quantification purposes a Second Order Standard Addition Method (SOSAM), which was first introduced by Booksh et al for spectrophotometric data, was used [30]. This is caused by the high dimensionality of departure data, that makes the traditional approach unfeasible.…”

Second-Order Standard Addition Method Based on Alternating Trilinear Decomposition

“…Therefore, Booksh et al have extended SAM to second-order instrumentation (instruments that return a matrix of data per sample, e.g., HPLC-DAD). 4 As pointed out in ref. 5, ideally, a second-order calibration can be performed in the presence of interfering species unaccounted by the calibration model.…”

“…However, if the interfering species change the instrument response of the analyte (in scale or shape), standard additions must be employed to ensure an accurate analyte concentration estimation. 4 Booksh et al presented a secondorder standard addition method (SOSAM) using direct trilinear decomposition (DTLD). The present authors have developed a method called the alternating trilinear decomposition (ATLD).…”

Determination of pesticides in honey using excitation–emission matrix fluorescence coupled with second-order calibration and second-order standard addition methods

“…The generalized standard addition method (GSAM), which proposed by Saxberg and Kowalski in 1979 [38], is an extension of SAM to first-order instruments (instruments that return a vector of data per sample). In 1995, Booksh et al have extended SAM to second-order instrumentation (instruments that return a matrix of data per sample) and presented the second-order standard addition method (SOSAM) [39]. Wu et al develop a novel SOSAM method based on ATLD [40].…”