Determination of methylene blue by resonance light scattering method using silica nanoparticles as probe

Jin, Fan; Xie, Zhiyuan; Teng, Xiao-Xiao; Yu, Zhang

doi:10.1016/j.cclet.2016.11.025

Cited by 8 publications

(7 citation statements)

References 26 publications

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“…For humans, intake of MB beyond permissible limits causes several health issues such as abdominal disorders, blindness, respiratory distress, mental disorder, and digestive disorder (Abdelrahman et al 2020). Various sensitive and reliable techniques such as liquid chromatography (LC) (Turnipseed et al 2020), high-performance liquid chromatography-mass spectroscopy (HPLC-MS) ( Matos et al 2021), resonance light scattering (RLS) (Fan et al 2017), and liquid chromatography-tandem mass spectroscopy (LC-MS/MS) (Tarbin et al 2008) are used to detect MB residues. However, these standard techniques are expensive, complex, consume time and labor (Khajuria et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Green synthesized Ag/rGO embedded flexible cotton SERS substrate for detection of methylene blue

Gokulakrishnan

Sekhar

Kamakshi

2023

Preprint

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Ag/rGO nanocomposite SERS substrates are widely used for the detection of contaminations in water and food adulterants. In this work, we prosed a novel green route to synthesize Ag/rGO nanocomposite for SERS-based detection of methylene blue (MB). Ag/rGO nanocomposite is synthesized by simultaneous reduction of AgNO3 and GO with the leaf extract of Jasmine fluminense. Further, the flexible SERS substrate is fabricated by directly coating the synthesized Ag/rGO nanocomposite on cotton fabric and used for SERS-based detection of MB. The SERS studies on MB show a linear response of 0.97 over a wide detection range of 10− 3 to 10− 9 M with a minimum detection limit of 10− 9 M. The enhancement factor for MB at a concentration of 10− 9 M is 5.33 × 105 with a high signal-to-noise ratio of 31.69. This study emphasizes the potential of green synthesized Ag/rGO embedded flexible cotton SERS substrate for the traceable fingerprint detection of MB.

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Section: Introductionmentioning

confidence: 99%

Green synthesized Ag/rGO embedded flexible cotton SERS substrate for detection of methylene blue

Gokulakrishnan

Sekhar

Kamakshi

2023

Preprint

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“…Recent studies mostly focused on the removal of MB but less on the simultaneous determination of MB and its metabolite residues in food [ 12 , 13 ]. Lately, various detection methods such as spectrophotometry [ 6 , 14 ], indirect competitive enzyme-linked immunosorbent assay (IC-ELISA) [ 15 ], resonance light scattering (RLS) [ 16 ], liquid chromatography (LC) [ 8 ], and liquid chromatography–tandem mass spectrometry (LC–MS/MS) [ 17 , 18 ] for MB and its metabolite residues in aquatic products have been developed. As the LC method is sensitive, rapid, and accurate, it has become the most used method for the detection of MB in food.…”

Section: Introductionmentioning

confidence: 99%

Determination of Methylene Blue and Its Metabolite Residues in Aquatic Products by High-Performance Liquid Chromatography–Tandem Mass Spectrometry

et al. 2021

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A sensitive and reliable method was developed to determine methylene blue (MB) and its metabolite residues, including azure A (AZA), azure B (AZB), and azure C (AZC) in aquatic products by HPLC–MS/MS. The samples were extracted by acetonitrile and cleaned up by alumina-neutral (ALN) cartridges. The analytes were separated on a Sunfire C18 column (150 mm × 2.1 mm, 5 µm). The method was validated according to the European criteria of Commission Decision 2002/657/CE. Good linearity between 1–500 µg/L was obtained with correlation coefficients (R2) greater than 0.99. The limit of quantification (LOQ) was 1.0 µg/kg. The average recoveries at three levels of each compound (1, 5, and 10 µg/kg) were demonstrated to be in the range of 71.8–97.5%, with relative standard deviations (RSDs) from 1.05% to 8.63%. This method was suitable for the detection of methylene blue and its metabolite residues in aquatic products.

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“…Por serem inertes, robustas, de fácil obtenção e possuindo alta área superficial, nanopartículas de sílica são ótimos substratos para serem usados como suportes e para reduzir a porção química dos princípios ativos. Em adição, podem atuar como adsorventes com potencial aplicação na remoção de corantes e determinação do azul de metileno [33] ou na remoção de contaminantes de solos. Além das funções relevantes de adsorção podem ainda serem imobilizadas em tecidos resultando em hidrofobicidade [34][35][36].…”

Section: Introductionunclassified

Avaliação da atividade antimicrobiana e adsortividade de nanopartículas de sílica dopadas com CuO

et al. 2019

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RESUMO Nanomateriais exibem propriedades que se aplicam nas mais variadas áreas, entre estas, na área da saúde e agrícola, nas quais as pesquisas vêm aumentando progressivamente. Neste trabalho sintetizamos nanopartículas de sílica não porosas dopadas com óxido de cobre (CuO) usando método de Stöber com pequenas modificações. Em adição, a atividade antimicrobiana destes compostos contra Staphylococcus aureus, Escherichia coli e Candida albicans foi avaliada. Primeiramente, o nanomaterial foi caracterizado por difração de raios-X para identificação da fase CuO na matriz de sílica, e espectroscopia no infravermelho por transformada de Fourier identificando as principais bandas do SiO2 e a funcionalização do CuO. Por fim, a morfologia das partículas foi observada por microscopia eletrônica de varredura a qual mostrou formação de nanopartículas esféricas com tamanho aproximado de 70 nm. As nanopartículas de sílica dopadas com CuO mostraram eficiência na inibição dos três tipos de microrganismos testados neste trabalho, formando halos de inibição entre 19,0 e 25,0 mm. Nos ensaios de adsorção usando azul de metileno, foi possível observar que a presença de CuO na superfície das nanopartículas de sílica modificou as características de adsorção, aumentando a capacidade e a cinética de adsorção e desta forma mostrando ser um nanomaterial com características interessantes para aplicações na agricultura e em diferentes áreas da saúde.

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Determination of methylene blue by resonance light scattering method using silica nanoparticles as probe

Cited by 8 publications

References 26 publications

Green synthesized Ag/rGO embedded flexible cotton SERS substrate for detection of methylene blue

Green synthesized Ag/rGO embedded flexible cotton SERS substrate for detection of methylene blue

Determination of Methylene Blue and Its Metabolite Residues in Aquatic Products by High-Performance Liquid Chromatography–Tandem Mass Spectrometry

Avaliação da atividade antimicrobiana e adsortividade de nanopartículas de sílica dopadas com CuO

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