Topic
Calibration curve
About: Calibration curve is a research topic. Over the lifetime, 6552 publications have been published within this topic receiving 95128 citations.
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11 Apr 2013TL;DR: In this paper, the authors present a calibration device for non-invasive sensor that allows the generation of calibration curves or data for measured parameters over larger ranges of measured values compared to patient-based calibration.
Abstract: A calibration device according to embodiments of the disclosure is capable of being used with a non-invasive sensor. Certain embodiments of the calibration device simulate a human pulse by varying the volume of blood being measured by the optical sensor. Further, embodiments of the calibration device allow the generation of calibration curves or data for measured parameters over larger ranges of measured values compared to patient-based calibration.
170 citations
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TL;DR: In this article, multivariate statistical quality control principles, including control charting of calibration parameters and control samples, are applied to multilevel ion chromatography (IC) calibrations to determine instrument response stability and minimum calibration frequency.
170 citations
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TL;DR: A coupled capillary column system was developed for the qualitative and quantitative determination of melamine with isotope internal standard in dairy products by gas chromatography/mass spectrometry (GC/MS) without derivatization.
169 citations
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TL;DR: In this article, an external calibration curve (ECC) approach with normalized diffusion coefficients was proposed to estimate molecular weight in solution, taking the shape of the molecules into account enables accurate MW-predictions with a maximum error of smaller than ±9%.
Abstract: Determination of the aggregation and solvation numbers of organometallic complexes in solution is an important task to increase insight in reaction mechanisms. Thus knowing which aggregates are formed during a reaction is of high interest to develop better selectivity and higher yields. Diffusion-ordered spectroscopy (DOSY), which separates NMR signals according to the diffusion coefficient, finds increasing use to identify species in solution. However, there still is no simple relationship between diffusion coefficient and molecular weight (MW). Some methods have been developed to estimate the MW but still with a significant error of ±30%. Here we describe a novel development of MW-determination by using an external calibration curve (ECC) approach with normalized diffusion coefficients. Taking the shape of the molecules into account enables accurate MW-predictions with a maximum error of smaller than ±9%. Moreover we show that the addition of multiple internal references is dispensable. One internal reference (that also can be the solvent) is sufficient. If the solvent signal is not accessible, 16 other internal standards (aliphatics and aromatics) are available to avoid signal overlapping problems and provide flexible choice of analytes. This method is independent of NMR-device properties and diversities in temperature or viscosity and offers an easy and robust method to determine accurate MWs in solution.
165 citations