Rapid and sensitive detection of Hg²⁺ with a SERS-enhanced lateral flow strip

Abstract

Mercury ion is one of the most toxic heavy metal ions widely distributed in environment. It cannot be degraded by microorganisms and can accumulate in the body through the food...

Highly sensitive and selective SERS substrates with 3D hot spot buildings for rapid mercury ion detection

“…The intensity of the peak at 1575 cm −1 was also fitted and exhibited good linearity as the Hg 2+ increased. However, the correlation coefficient of the peak at 1575 cm −1 (R 2 2 ) is small compared to that of R 2 1 . This explanation may be attributed to the effect of adsorption conformation and protonation on the random dispersion of probe molecules on the surface of Au NPs inside the capillary.…”

“…Heavy metal ion pollution has emerged as a major global concern among waste emissions, which significantly threatens ecosystem variety as well as human life and health through cyclic enrichment processes in the environment. [1][2][3] Moreover, Hg 2+ has attracted wide attention owing to its serious damage to the biological system, which could irreversibly destroy the liver, kidneys, heart, and nervous system even at low concentrations. [4][5][6] In the past decades, various analytical techniques, including chromatography, electrochemical methods, atomic absorption spectrometry, atomic emission spectrometry, and fluorescence spectrometry, for detecting and analyzing Hg 2+ have been reported.…”

Self-Assembly Multivalent Fluorescence-Nanobody Coupled Multifunctional Nanomaterial with Colorimetric Fluorescence and Photothermal to Enhance Immunochromatographic Assay

“…Lateral flow immunoassay (LFIA) is a widely utilized tool for point-of-care (POC) detection. Multimodal LFIA technology has developed rapidly and has been successfully applied to food testing, , in vitro diagnostics, , and environmental monitoring recent years. , Multisignal LFIA sensors are constructed by integrating antibodies (monoclonal, polyclonal, and nanobody) and nanomaterials (noble metal nanomaterials, carbon nanomaterials, quantum dots and nanoenzymes, etc. ), which can provide multiple signal outputs, mainly including colorimetric signals, fluorescent signals, Raman signals, electrochemical signals and thermal signals .…”

Advances in Electrochemical Aptamer Biosensors for the Detection of Food‐borne Pathogenic Bacteria

“…Immunological detection is based on the use of antibodies or antigens as detection components through the specific reaction of antigens and antibodies to achieve the purpose of detection. [1] The main techniques include enzymelinked immunosorbent assays, [2] immunochromatographic techniques [3] and immunofluorescence techniques. [4] Molecular biology detection techniques revolve around polymerase chain reaction (PCR) amplification of DNA in vitro to increase the number of test subjects for detection purposes.…”

“…[4] Molecular biology detection techniques revolve around polymerase chain reaction (PCR) amplification of DNA in vitro to increase the number of test subjects for detection purposes. [1] The main techniques include PCR, [5] multiplex PCR, [6] timed fluorescent quantitative PCR [7] and ring-mediated isothermal nucleic acid amplification. [8] Traditional methods require isolation and incubation steps for DNA (or RNA) before identifying and detecting the target can be achieved.…”