Topic
Detection limit
About: Detection limit is a research topic. Over the lifetime, 34379 publications have been published within this topic receiving 644817 citations. The topic is also known as: limit of detection & lower detection limit.
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TL;DR: In this article, an improved HPAEC with pulsed amperometric detection (PAD) method is developed and validated for simultaneous determination of atmospherically relevant sugar alcohols, monosaccharides, and monosACcharide anhydrides.
137 citations
TL;DR: A reversed-phase LC method, optimised for the separation of trans- and cis-resveratrol, catechin, epicatechin, quercetin and rutin, is reported, although the use of a fluorimetric detector considerably lowered the detection limits.
137 citations
TL;DR: The chromium concentration in DES rich phase (extraction phase) was determined by using microsample injection flame atomic absorption spectrometer (FAAS) and the detection limit (LOD), the quantification limit (LOQ), preconcentration factor and relative standard deviation were found as 5.5µgL(-1), 20 and 6%, respectively.
137 citations
TL;DR: The values of the detection limit and the quantification limit obtained show that, in chromatographic analyses, the best method is that based on the use of the parameters obtained from the analytical curve, which are statistically reliable.
136 citations
TL;DR: In this paper, a simple method for immobilization of acetylcholinesterase (AChE) on multiwall carbon nanotubes (MWNTs)-chitosan (MC) composite was proposed and thus a sensitive, fast and stable amperometric sensor for quantitative determination of organophosphorous insecticide was developed.
Abstract: A simple method for immobilization of acetylcholinesterase (AChE) on multiwall carbon nanotubes (MWNTs)–chitosan (MC) composite was proposed and thus a sensitive, fast and stable amperometric sensor for quantitative determination of organophosphorous insecticide was developed. Atomic force microscopy showed that this matrix possessed homogeneously netlike structure, which prevented enzyme from leaving out of the electrode. MWNTs promoted electron transfer reactions at a lower potential and catalyzed the electro-oxidation of thiocholine, thus increasing detection sensitivity. Based on the inhibition of organophosphorous insecticide to the enzymatic activity of AChE, using triazophos as a model compound, the conditions for detection of the insecticide were explored. Under optimal conditions, the inhibition of triazophos was proportional to its concentration in two ranges, from 0.03 to 7.8 μM and 7.8 to 32 μM with a detection limit of 0.01 μM. A 95% reactivation of the inhibited AChE could be regenerated for using pralidoxime iodide within 8 min. The constructed biosensor processing prominent characteristics and performance such as good precision and reproducibility, acceptable stability and accuracy, fast response and low detection limit has potential application in the characterization of enzyme inhibitors and detection of toxic compounds against to enzyme.
136 citations