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: The UHPLC method described in this article has been demonstrated as a reliable procedure to determine 12 biogenic amines and polyamines in less than 7min of chromatographic elution.
102 citations
TL;DR: In this article, a functionalized carbon nanotubes paste electrode modified with cross-linked chitosan was used for the determination of trace amounts of cadmium(II) and mercury (II) by linear anodic stripping voltammetry.
102 citations
TL;DR: This method has been successfully applied to estimating of creatinine and uric acid in human urine and provides a simple, rapid separation and sensitive detection for the species of interest in 10 min with UV detection at 205 nm.
Abstract: An environmentally friendly reversed-phase HPLC method for simultaneous determination of creatinine and uric acid in human urine samples has been developed. Human urine samples were pretreated by dilution, protein precipitation, centrifugation and filtration, followed by HPLC separations using a reversed-phase C(18) column with an aqueous mobile phase of phosphate buffer. The retention loss of a C(18) column when using the highly aqueous mobile phases was avoided by employing a gradient elution using a small volume (<0.23 mL) of acetonitrile and phosphate buffer at pH 4.75. This developed method provides a simple, rapid separation and sensitive detection for the species of interest in 10 min with UV detection at 205 nm. Quantitation was carried out by relating the peak areas of the identified compounds to that of hypoxanthine as an internal standard. The detection limits for creatinine and uric acid were 0.045 and 0.062 microg mL(-1), respectively. The recoveries of the standards added to urine samples were 87.3 - 102.2% for creatinine and 97.3 - 108.6% for uric acid, and the relative standard deviation for both analytes was less than 1.0%. This method has been successfully applied to estimating of creatinine and uric acid in human urine.
102 citations
TL;DR: In this article, a new approach for a cloud point extraction electrothermal atomic absorption spectrometric method was used for determining bismuth in tap water and biological samples (urine and hair).
102 citations
TL;DR: The proposed method, biotin labeled and free OTA competed to bind with immobilized aptamer onto the surface of a screen printed carbon electrode (SPCE), and percentage binding was calculated, demonstrating the efficiency of proposed aptasensor for such matrices.
102 citations