New Approach to Multivariate Standard Addition Based on Multivariate Curve Resolution by Alternating Least-Squares: Application to Voltammetric Data

Tapia, María A.; Pérez‐Ràfols, Clara; Ariño, Cristina; Serrano, Núria; Dı́az-Cruz, José Manuel

doi:10.1021/acs.analchem.9b05477

Cited by 6 publications

(5 citation statements)

References 31 publications

(58 reference statements)

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“…Such situations seem also similar in other fields of analytical chemistry from 1990s to nowadays; many papers related to SAM have appeared in environmental chemistry [57][58][59][60][61][62][63][64], food chemistry [65][66][67][68], clinical chemistry [69][70][71] and miscellaneous fields [72][73][74][75][76][77][78][79][80][81]. The validation approaches in non-forensic toxicology fields were also of various types like those of forensic toxicology as listed in Table 1.…”

Section: Discussionmentioning

confidence: 77%

The standard addition method and its validation in forensic toxicology

et al. 2021

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Purpose In the quantitative forensic toxicological analyses using instruments, major methods to be employed are conventional matrix-matched calibration method (MMCM). However, nowadays, the needs for using the standard addition methods (SAM) are increasing. In spite of this situation, there are no reports of the guidelines for the validations of SAM. In this review, the principle, how to perform it, advantages, disadvantages, reported application data, and the details of validation procedures for the SAM are described. Methods Various databases such as SciFinder, Google and Google Scholar were utilized to collect relevant reports referring to the SAM. The long experiences of our research group on the SAM were also included in this review. Results Although the experimental procedures for the SAM are much more laborious than those of the MMCM, the SAM is essential to quantify target xenobiotic(s) in special matrices such as human solid tissues or biles, which remarkably interfere with the usual quantitative analyses. The validation methods for the SAM have been also proposed for the cases in the absence of the blank matrices. Conclusions To our knowledge, this is the first presentation of detailed SAM procedure and its validation, which will facilitate the use of the SAM in forensic toxicology. Especially for its validation, new simple methods have been proposed.

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Section: Discussionmentioning

confidence: 77%

The standard addition method and its validation in forensic toxicology

et al. 2021

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“…In a recent work, our group has shown that the shape constraint characteristic of voltammetric measurements is a key factor to apply MCR-ALS to multivariate standard addition with no need of second order data. Moreover, the proposed method allows one to simultaneously add all the analytes from the same standard solution, which substantially reduces the number of required measurements, and consequently the total analysis time [69]. Figure 8 summarizes this methodology.…”

Section: Determination and Speciation Of Heavy Metal Ions And Other P...mentioning

confidence: 99%

MCR-ALS of voltammetric data for the study of environmentally relevant substances

Serrano

Pérez‐Ràfols

Ariño

et al. 2020

Microchemical Journal

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“…As for relative quantification, the internal standard method is commonly used in chromatography and spectrometry. 4 Methods of absolute quantification like standard curve and standard addition 5 are most frequently used in analytical chemistry. Therefore, although there are lots of examples of semi-, relative, and absolute quantification in chemistry, their theoretical principles have not been well summarized and demonstrated to students yet.…”

Section: ■ Introductionmentioning

confidence: 99%

Introducing Theoretical Principles of Semi-, Relative, and Absolute Quantification via Conventional, Real-Time, and Digital PCR to Graduate and Senior Undergraduate Students of Chemistry

et al. 2022

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Quantitative analysis in analytical chemistry is divided into semi-, relative, and absolute analysis. An example of each analysis is pH test paper, internal standard, and standard addition, respectively. However, their definition and differenceshave not yet been explained to students sufficiently in classes as well as textbooks. Polymerase chain reaction (PCR) is a good demonstration of quantitative analysis because it covers all three methods of quantification listed above. For example, traditional PCR can perform semiquantification; real-time PCR includes both relative and absolute quantitation. Therefore, in this tutorial article, we take PCR as an example to explain the kinds of methods of quantification to students. The basic principle and theories of the three PCR techniques for quantification are demonstrated and derived in detail. This will help students obtain comprehensive knowledge of quantitative analysis by studying the theoretical principles of different PCR techniques and further understanding their applications by comparing the characteristics of semi-, relative, and absolute quantification. This report is an attempt to combine teaching of chemistry with biology and present theoretical principles in a new way, which will be a helpful complement to teaching theoretical concepts in analytical chemistry and biochemistry courses.

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New Approach to Multivariate Standard Addition Based on Multivariate Curve Resolution by Alternating Least-Squares: Application to Voltammetric Data

Cited by 6 publications

References 31 publications

The standard addition method and its validation in forensic toxicology

The standard addition method and its validation in forensic toxicology

MCR-ALS of voltammetric data for the study of environmentally relevant substances

Introducing Theoretical Principles of Semi-, Relative, and Absolute Quantification via Conventional, Real-Time, and Digital PCR to Graduate and Senior Undergraduate Students of Chemistry

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