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: A high-performance liquid chromatographic method for the determination of valsartan in human plasma is reported, based on protein precipitation with methanol and reversed-phase chromatography with fluorimetric detection.
93 citations
TL;DR: In this paper, a highly luminescent metal-organic framework (MOF) with high surface area of 4073.9m2m2g−1 was used for detecting parathion-methyl.
Abstract: This work reports a highly luminescent metal-organic framework (MOF) with high surface area of 4073.9 m2 g−1, exhibiting an excellent adsorption ability and sensing performance in rapidly detecting parathion-methyl. This is an excellent example of luminescent MOFs to sensitively detect pesticides by fluorescent quenching with satisfactory results. This sensor provides a very wide linear detection range from 1.0 μg kg−1 to 10 mg kg−1, and low limit of detection 0.12 μg kg−1 (0.456 nM) for parathion-methyl. This low detection limit is much lower than the maximum residue limits (MRL) in the European Union pesticides database (0.01 mg kg−1 for fruits and vegetables, 0.02 mg kg−1 for tree nuts), as well as those of previous assays. The quenching effect of parathion-methyl is attributed to the electron-rich chemical group of nitroaromatics which might lead to photo-induced electron transfer. The fluorescent method has been reliably used for the determination of parathion-methyl in spiked irrigation water with satisfactory results, which suggests its potential for rapid detection of pesticides in food and environmental sample.
93 citations
TL;DR: In this article, a dual template molecularly imprinted electrochemical sensor was fabricated for the simultaneous determination of dopamine (DA) and chlorpromazine (CPZ) in real sample analysis of human serum, urine and pharmaceutical samples, and the result of recovery (93.9%-106.15%) and relative standard deviation (RSD) (1.5%-6.6%) indicated good practicality.
93 citations
TL;DR: The methodology was found to be reproducible, quantitative, and not susceptible to significant interference from the presence of anions such as sulfate, phosphate, nitrate and chloride at concentrations <1 mM, making it potentially suitable for rapid screening and routine analysis of perchlorate in environmental samples.
93 citations
TL;DR: In this paper, the authors reported on the preparation of gold electrodes modified with graphene-AuAg (Au/Gr-AgAg) or graphene composite materials as electrochemical sensors for dopamine (DA) detection.
93 citations