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 paper, a column preconcentration technique with inductively coupled plasma optical emission spectroscopy (ICP-OES) was developed using a cartridge filled with octadecyl silica modified by l-(2-pyridylazo) 2-naphtol (PAN).
93 citations
TL;DR: The method was successfully applied to the determination of mercury in river, sea, mineral and tap water samples and a certified reference material (CRM).
93 citations
TL;DR: PFPT was synthesized via the palladium-catalyzed Suzuki cross-coupling polymerization method and successfully applied for the rapid, real time, and highly sensitive detection of antibiotics tetracycline (Tc) in 100% aqueous media via photoinduced electron transfer with detection limit in the ppb level.
Abstract: A new conjugated polyelectrolyte poly[5,5′-(((2-phenyl-9H-fluorene-9,9-diyl)bis(hexane-6,1-diyl))bis(oxy))diisophthalate] sodium (PFPT) was synthesized via the palladium-catalyzed Suzuki cross-coupling polymerization method and successfully applied for the rapid, real time, and highly sensitive detection of antibiotics tetracycline (Tc) in 100% aqueous media via photoinduced electron transfer with detection limit in the ppb level. Remarkably, PFPT could also be applied for the trace analysis of Tc in serum samples having recoveries well in the range 92–97% with relative standard deviations (RSD) of 1.01–1.14%, confirming reliability of the present method for the analysis of Tc. Additionally, PFPT was blended with the abundant natural polysaccharide chitosan to form CS-PFPT composite films and developed as a biopolymer based membrane for the removal of Tc from water samples with a good adsorption capacity of 3.12 mg g–1, thus finding vital application in the treatment of antibiotic infested wastewater.
93 citations
TL;DR: Optimal LP-GC-MS conditions were determined which achieved the fastest separation with the highest signal/noise ratio in MS detection (selected ion monitoring mode), and this distinctive approach provided several benefits in the analysis of the representative pesticides versus a conventional GC-MS method.
93 citations
TL;DR: In this article, a single wall carbon nanotube (SWNT) based gas sensor is fabricated with mainly two type of surface-networks, (i) SWNT random network (CNT-TFR) and (ii) CNT-μR).
Abstract: In this work Single wall carbon nanotube (SWNT) based gas sensor is fabricated with mainly two type of surface-networks, (i) SWNT random network (CNT-TFR) and (ii) SWNT aligned network (CNT-μR). Investigations of sensor response and its signal-to-noise ratio have been carried out for both the networks. Sensing measurement is performed by exposing sensor to NO2 concentration from 0.5 ppm to 20 ppm over CNT-TFR and CNT-μR. It has been found that the response of CNT-μR is higher than CNT-TFR. The variation of response with concentration for both sensors is investigated and it is observed that type of surface network affects the surface heterogeneity and hence adsorption capacity of sensor. The detection limit of these gas sensors is 125 ppt and 165 ppt for CNT-TFR and CNT-μR respectively. CNT-TFR has a better detection limit (DL) and signal-to-noise ratio as compared to CNT-μR due to better surface homogeneity of CNT-TFR. The detection limit for the aligned gas sensors decreases as network density decreases.
93 citations