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: Evidence is presented for a sensitive method useful for the detection of hydroxyl free radical generation in various systems using high pressure liquid chromatography with electrochemical detection (LCED) and hypoxanthine/xanthine oxidase plus chelated iron.
404 citations
TL;DR: In this paper, a shipboard analytical method for determining iron(III) in seawater was developed based on a combination of selective column extraction using chelating resin and improved chemiluminescence (CL) detection in a closed flowthrough system.
Abstract: A new automated shipboard analytical method for determining iron(III) in seawater has been developed. The method is based on a combination of selective column extraction using chelating resin and improved chemiluminescence (CL) detection in a closed flowthrough system. In this method, Fe(III) in an acidified sample solution is selectively collected on 8-quinolinol immobilized chelating resin and then eluted with dilute hydrochloric acid. The resulting eluent is mixed with luminol solution, aqueous ammonia, and hydrogen peroxide solution successively, and then the mixture is introduced into the CL cell. The iron concentration is obtained from the CL intensity. The detection limit of iron(III) is 0.05 nmol L -1 when using an 18-mL seawater sample
398 citations
TL;DR: The lower detection limits of ion-selective polymeric membrane electrodes (ISEs) are in the micromolar range except when sample ion activities are adjusted by using ion buffers, which maintain low and constant activity via superimposed complexation or solubility equilibria as mentioned in this paper.
Abstract: The lower detection limits of ion-selective polymeric membrane electrodes (ISEs) are in the micromolar range except when sample ion activities are adjusted by using ion buffers, which maintain low and constant activity via superimposed complexation or solubility equilibria. 1 Therefore, they are unsuitable for many important applications. In contrast, detection limits in the picomolar range have been achieved with optical sensors on the basis of similar technology and the same ionophores, 2
394 citations
TL;DR: Dispersive liquid-liquid microextraction (DLLME) technique was successfully used as a sample preparation method for graphite furnace atomic absorption spectrometry (GF AAS) and is a very simple, rapid and sensitive method.
386 citations
TL;DR: Nitrogen-doped carbon quantum dots (N-CQDs) were successfully synthesized using rice residue and glycine as carbon and nitrogen sources by one-step hydrothermal method and showed the applicability to detect TCs.
369 citations