Determination of Mercury by Inductively Coupled Plasma—Mass Spectrometry

Passariello, B.; Barbaro, Michela; Quaresima, S.; Casciello, A.; Marabini, A.M.

doi:10.1006/mchj.1996.0110

Cited by 52 publications

(19 citation statements)

References 2 publications

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“…Estas incluem capacidade multielementar, alta sensibilidade e possibilidade de calibração diretamente contra padrões aquosos [7,8]. A capacidade do ICP-MS em quantificar elementos presentes em concentrações traço faz dessa técnica a de escolha para a determinação de diversos elementos em diferentes tipos de matrizes [9,10].…”

Section: Plasma Mass Spectrometry After Acid Decomposition Assisted Bunclassified

Determinação de metais pesados em amostras de sedimentos superficiais da bacia do rio São Francisco por espectrometria de massas com fonte de plasma acoplada indutivamente após decomposição ácida assistida por radiação micro-ondas

Silva

Matos²,

Divino

et al. 2016

Eclet. Quim.

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Resumo: A determinação de espécies químicas tóxicas em sedimentos em nível traço tem recebido especial atenção no campo da ecologia e química ambiental, devido ao potencial tóxico e capacidade de acumulação dessas espécies. No Estado de Minas Gerais, esse problema é especialmente crítico no Quadrilátero Ferrífero, uma das regiões de mineração mais conhecida mundialmente, devido às atividades de mineração predatória (garimpo) ou não, realizadas no Estado desde o século XVII. No presente trabalho, as amostras de sedimentos superficiais de rio foram coletadas na bacia hidrográfica do Rio São Francisco no Estado de Minas Gerais.As amostras de sedimentos foram decompostas empregando forno de micro-ondas com cavidade e frasco fechado e usando uma mistura ácida: HNO 3 +HF+H 3 BO 3 . A exatidão do método foi determinada empregando um material de referência certificado (NIST 2780, Hard Rock Mine Waste) enquanto que o desvio padrão relativo (DPR) não ultrapassou a 20% para todas as amostras investigadas. A maioria dos resultados foi concordante dentro de um nível de confiança de 95%.

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Section: Plasma Mass Spectrometry After Acid Decomposition Assisted Bunclassified

Determinação de metais pesados em amostras de sedimentos superficiais da bacia do rio São Francisco por espectrometria de massas com fonte de plasma acoplada indutivamente após decomposição ácida assistida por radiação micro-ondas

Silva

Matos²,

Divino

et al. 2016

Eclet. Quim.

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“…There have been concerted efforts to develop sensitive methods for detecting mercury at low levels in environmental and biological samples. [5][6][7] These include (a) analytical techniques such as inductively coupled plasma optical emission spectrometry (ICP-OES) with detection limit of 0.06 µg 8 , cold vapor atomic absorption spectrometry (CV AAS) which reduces Hg 2+ to elemental mercury Hg(0) and detects the atomic absorption signature of Hg with a detection limit of 0.7ng 9 and inductively coupled plasma mass spectrometry (ICP-MS) with a detection limit of 0.001 ppb 10,11 (b) fluorescent and colorimetric sensors, 5 (c) surfaceenhanced Raman spectroscopy (SERS) based sensors 12 (d) ratiometric sensors, 13 (e) photoelectrochemical sensors, 14 (f) label-free sensors, 15 (g) micro-electromechanical sensors based on surface acoustic wave and quartz crystal microbalance, 16 (h) naked eye sensors 17 (i) reusable DNA-functionalized hydrogels 18 and surfaces 19 and others. [20][21][22][23][24] We have earlier developed a rhodamine−rhodanine based 'turn-on' fluorescent sensor (RR1) for real-time monitoring of inorganic mercury (Hg 2+ ) uptake in cells and zebrafish larvae.…”

Section: Introductionmentioning

confidence: 99%

Development of a Next-Generation Fluorescent Turn-On Sensor to Simultaneously Detect and Detoxify Mercury in Living Samples

et al. 2019

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Strategies for simultaneous detection and detoxification of Hg 2+ using a single sensor from biological and environmental samples are limited and have not been realized in living organisms so far. We report a highly selective, small molecule 'turn-on' fluorescent sensor, PYDMSA, based on the cationic dye, Pyronin Y (PY), and chelating agent, meso-2, 3-dimercaptosuccinic acid (DMSA) for the simultaneous detection and detoxification of inorganic mercury (Hg 2+). After Hg 2+ detection, concomitant detoxification is carried out with sufficient efficacy in living samples which makes the sensor unique. PYDMSA exhibits high selectivity for Hg 2+ over other competing metal ions with an experimental detection limit of 300 pM in aqueous buffer solution. When PYDMSA reacts with Hg 2+ , the CS-C 9 bond in the sensor gets cleaved. This results in the 'turn-on' response of the fluorescence probe with a concomitant release of one equivalent of water-soluble Hg 2+-DMSA complex which leads to synchronous detoxifying effect. The sensor by itself is non-toxic to cells in culture and has been used to monitor the realtime uptake of Hg 2+ in live cells and zebrafish larvae. Thus, PYDMSA is a unique sensor which can be used to detect and detoxify mercury at the same time in living samples.

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“…There are existing methods for the determination and detection of Hg 2+ ions, including atomic absorption spectroscopy (AAS) (Martinis et al, 2009), inductively coupled plasma spectroscopy (ICP) (Passariello et al, 1996), molecular absorption spectroscopy (Yang et al, 2010) and electro-analytical techniques (Abu-Shawish, 2009;Khani et al, 2010). While these methods are well established, they often require significant sample preparation and expensive laboratory-based instruments.…”

Section: Introductionmentioning

confidence: 99%

Fluorescent sensing and determination of mercury (II) ions in water

Ncube¹,

Rwm²,

Ndinteh³

et al. 2014

WSA

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The presence of heavy metals released from industrial activities into water streams is an ever-growing challenge to ensuring a safe and clean aquatic environment. Detection and determination of the levels of these heavy metals in wastewater is an important step before any measures can be taken. In this study we report on a fluorescent sensing probe based on a naphthyl azo dye modified dibenzo-18-crown-6-ether (DB18C6) for the detection and determination of mercury (II) ions in water. The probe showed high sensitivity and selectivity towards the mercury (II) ion among various alkali, alkaline earth, and transition metal ions. The mercury (II) ion quenched the fluorescence of the probe. Stern-Volmer quenching constants (K sv ) were found to be highest for Hg 2+ ion at 1.18 x 10 5 M -1 compared to 3.85 x 10 4 M -1 for copper (II) ion. The stoichiometry of the sensormetal ion interaction was found to be 1:1 for both metal ions using Job plots. The detection limit for Hg 2+ was 1.25 x 10 -8 M. The dye modified crown ether was then used to detect mercury in a water sample from a coalfired power plant and to determine the amount of mercury in the water sample.

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Determination of Mercury by Inductively Coupled Plasma—Mass Spectrometry

Cited by 52 publications

References 2 publications

Determinação de metais pesados em amostras de sedimentos superficiais da bacia do rio São Francisco por espectrometria de massas com fonte de plasma acoplada indutivamente após decomposição ácida assistida por radiação micro-ondas

Determinação de metais pesados em amostras de sedimentos superficiais da bacia do rio São Francisco por espectrometria de massas com fonte de plasma acoplada indutivamente após decomposição ácida assistida por radiação micro-ondas

Development of a Next-Generation Fluorescent Turn-On Sensor to Simultaneously Detect and Detoxify Mercury in Living Samples

Fluorescent sensing and determination of mercury (II) ions in water

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