Application of multisegment injection on quantification of creatinine and standard addition analysis of urinary 5‐hydroxyindoleacetic acid simultaneously with creatinine normalization
Sign Up to like & getrecommendations! Published in 2019 at "ELECTROPHORESIS"
DOI: 10.1002/elps.201900456
Abstract: In this paper, the development of a simple dilute‐and‐shoot method for quantifying urinary creatinine by CE–ESI–MS was described. The creatinine analysis time was about 7 min/sample by conventional single injection (SI) method and can be… read more here.
Keywords: addition analysis; analysis; standard addition; injection ... See more keywords
Standard addition method with cumulative spikes: uric acid determination in human serum by voltammetry with optimized uncertainty
Sign Up to like & getrecommendations! Published in 2018 at "Accreditation and Quality Assurance"
DOI: 10.1007/s00769-018-1350-8
Abstract: This work presents a low-cost, simple and adequately reliable voltammetric alternative to the determination of uric acid (UA) in human serum by the enzymatic colorimetric standard method. UA is an organic molecule of great biomedical… read more here.
Keywords: uric acid; uncertainty; method; serum ... See more keywords
Quantification of BTEX in Soil by Headspace SPME–GC–MS Using Combined Standard Addition and Internal Standard Calibration
Sign Up to like & getrecommendations! Published in 2017 at "Chromatographia"
DOI: 10.1007/s10337-017-3340-0
Abstract: There is a great demand for simple, fast and accurate methods for quantification of volatile organic contaminants in soil samples. Solid-phase microextraction (SPME) has a huge potential for this purpose, but its application is limited… read more here.
Keywords: internal standard; calibration; standard addition; soil ... See more keywords
Novel application of multivariate standard addition method based on net analyte signal for quantification of artificial sweeteners in complex food matrices
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Food Measurement and Characterization"
DOI: 10.1007/s11694-019-00269-3
Abstract: Multivariate standard addition method based on net analyte signal concept (SANAS) was found efficient to handle solute overlapping (direct interference) and matrix effect (indirect interference) when analyzing food additives. Aspartame, acesulfame-K, and saccharin are the… read more here.
Keywords: multivariate standard; addition method; standard addition; artificial sweeteners ... See more keywords
Fixed volume sequential standard addition calibration: value assignment of impurities in zero gas.
Sign Up to like & getrecommendations! Published in 2017 at "Chemometrics and Intelligent Laboratory Systems"
DOI: 10.1016/j.chemolab.2017.03.012
Abstract: Abstract A fixed volume case of sequential standard addition calibration (S-SAC) for the value assignment of impurities in zero gas is described. A mathematical description of this technique has been derived and has been shown… read more here.
Keywords: sequential standard; volume; addition; gas ... See more keywords
Multivariate standard addition for the analysis of overlapping voltammetric signals in the presence of matrix effects: Application to the simultaneous determination of hydroquinone and catechol
Sign Up to like & getrecommendations! Published in 2018 at "Chemometrics and Intelligent Laboratory Systems"
DOI: 10.1016/j.chemolab.2018.05.002
Abstract: Abstract A multivariate version of the classical univariate standard addition method is tested as a proof of concept for the voltammetric analysis of complex samples generating overlapped signals in the presence of significant matrix effects.… read more here.
Keywords: hydroquinone catechol; analysis; matrix effects; standard addition ... See more keywords
Quantitative determination of volatile compounds using TD-GC-MS and isotope standard addition for application to the heat treatment of food
Sign Up to like & getrecommendations! Published in 2021 at "Food Control"
DOI: 10.1016/j.foodcont.2020.107635
Abstract: Abstract For many foods that undergo thermal treatment, the generation of numerous process-induced compounds has strong implications for food quality and safety. Today, increasing attention is payed to the generation and occurrence of particular classes… read more here.
Keywords: volatile compounds; quality; treatment; method ... See more keywords
An on‐spot internal standard addition approach for accurately determining colistin A and colistin B in dried blood spots using ultra high‐performance liquid chromatography–tandem mass spectrometry
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Pharmaceutical and Biomedical Analysis"
DOI: 10.1016/j.jpba.2017.08.002
Abstract: Graphical abstract Figure. No Caption available. HighlightsA stable and accurate method was developed for colistin quantification from DBS.On‐spot internal standard addition was applied for accurate quantification.DBS provides benefit of stability for easily hydrolyzed colistin prodrug.Only… read more here.
Keywords: internal standard; colistin; standard addition; spot internal ... See more keywords
Absolute Quantification of Water in Microporous Solids with 1H Magic Angle Spinning NMR and Standard Addition.
Sign Up to like & getrecommendations! Published in 2017 at "Analytical chemistry"
DOI: 10.1021/acs.analchem.7b01653
Abstract: Zeolites are microporous materials driving industrial scale adsorption, ion exchange, and catalytic processes. Their water content dramatically impacts their properties, but its quantification with Karl Fisher titration or thermal gravimetric analysis is problematic. When standard… read more here.
Keywords: absolute quantification; angle spinning; water; standard addition ... See more keywords
A standard addition method to quantify serum lithium by inductively coupled plasma mass spectrometry.
Sign Up to like & getrecommendations! Published in 2021 at "Annals of clinical biochemistry"
DOI: 10.1177/00045632211054745
Abstract: BACKGROUND Therapeutic monitoring of lithium (Li) is important because of its narrow therapeutic range and therapeutic index. Here, the authors present the evaluation of an accurate method for the determination of lithium in serum. METHOD… read more here.
Keywords: addition method; method; serum; lithium ... See more keywords
Combining Isotope Dilution and Standard Addition—Elemental Analysis in Complex Samples
Sign Up to like & getrecommendations! Published in 2021 at "Molecules"
DOI: 10.3390/molecules26092649
Abstract: A new method combining isotope dilution mass spectrometry (IDMS) and standard addition has been developed to determine the mass fractions w of different elements in complex matrices: (a) silicon in aqueous tetramethylammonium hydroxide (TMAH), (b)… read more here.
Keywords: combining isotope; isotope dilution; standard addition; method ... See more keywords