Hplc Icp Ms
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Optimization of Methodology for Determination of Inorganic Chromium Species in Sewage Sludge Samples by HPLC-ICP-MS/MS
This study developed a methodology for extracting and speciating CrIII and CrVI in sewage sludge by high performance liquid chromatography, inductively coupled plasma tandem mass spectrometry (HPLC-ICP-MS/MS). The optimal procedure was solid-liquid extraction in a water bath with stirring at 50 °C for 16 h and 50 mmol L−1 ethylenediaminetetraacetic acid (
J. Braz. Chem. Soc.. Publicado em: 2020-12
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2. Quantification of Glyphosate and AMPA by HPLC-ICP-MS/MS and HPLC-DAD: A Comparative Study
In this work, the direct determination methodology of glyphosate and aminomethylphosphonic acid (AMPA) by high performance liquid chromatography (HPLC) using inductively coupled plasma with triple quadrupole mass spectrometer (ICP-MS/MS) was compared with the conventional method using diode array detector (HPLC-DAD). Both methods were selective, but the chro
J. Braz. Chem. Soc.. Publicado em: 2020-02
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3. Automatized Separation of Fractions from Petroleum Based on Spectrophotometric Signal Derivative Using Open-Source Hardware for the Determination of Ni and V Linked to Porphyrins
An automated method based on open-source hardware was created for the separation of porphyrins fractions from crude oil, an essential step for the quantification of V and Ni as metalloporphyrins. Preparative liquid chromatography was implemented with a reverse phase gradient from MeOH to toluene. The system allows three solvents and fractions changes by usin
J. Braz. Chem. Soc.. Publicado em: 23/05/2019
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4. Arsenic Speciation in Fish and Rice by HPLC-ICP-MS Using Salt Gradient Elution
This paper presents arsenic speciation studies by high-performance liquid chromatography with inductively coupled plasma-mass spectrometer (HPLC-ICP-MS) using a chromatography column containing a strong anion exchange stationary phase (Agilent Bio SAX G3154A/101) for determination of arsenobetaine (AsB), dimethylarsinic acid (DMA), AsIII, monomethylarsonic a
J. Braz. Chem. Soc.. Publicado em: 2018-08
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5. PROTEOMIC ASPECTS AND TRACE-ELEMENT ACCUMULATION IN FISH BILE: POTENTIAL BIOLOGICAL MARKER FOR ENVIRONMENTAL EXPOSURE? / ASPECTOS PROTEÔMICOS E DETERMINAÇÃO DE ELEMENTOS-TRAÇO EM BÍLIS DE PEIXE: POTENCIAL MARCADOR BIOLÓGICO DE EXPOSIÇÃO AMBIENTAL?
A bílis de peixe é um fluido biológico com grande potencial como biomarcador de exposição ambiental a metais e misturas complexas. Este trabalho verificou o potencial desta matriz em situações de contaminação ambiental por metais e analisou aspectos proteômicos. Duas espécies de peixe (Mugil liza ¿ Tainhas, e Tilapia rendalli ¿ Tilápias) foram
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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6. Geoquímica dos solos e das águas da Península Fildes e Ilha Ardley - Antártica Marítima
Determinar a composição das águas e a caracterização geoquímica e mineralógica dos solos da Península Fildes (Ilha Rei George) e Ilha Ardley, ambas na Antártica Marítima, possui relevância, pois a região é um dos maiores locais de nidificação de pinguins do planeta, além de possuir 5 estações de pesquisa em atividade. Foram coletadas amostr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/02/2012
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7. Evaluation techniques coupled to mass spectrometry (ICP-MS) aimed at the fractionation and chemical speciation of mercury in blood and plasma / Avaliação de técnicas acopladas à espectrometria de massas com plasma (ICP-MS) visando o fracionamento e a especiação química de mercúrio em sangue e plasma
Mercury (Hg) is one of the most toxic environmental pollutants. It exists primarily in three forms: elemental mercury (Hg0), or metallic mercury, inorganic mercury (Hg-i), particularly mercuric chloride and organic mercury (Hg-o), mainly represented by methylmercury (MeHg) and ethylmercury (EtHg), and the organic forms of mercury are more toxic than the inor
Publicado em: 2010
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8. DESENVOLVIMENTO DE PROCEDIMENTOS ALTERNATIVOS DE PREPARO E DE DETERMINAÇÃO DE METAIS PESADOS EM FÁRMACOS TRICÍCLICOS
In this work, sample preparation and determination methods described in pharmacopeias were evaluated and alternative methods using sample decomposition in closed vessels and determination by atomic spectrometrometry were proposed as alternative. Tricyclic drugs (carbamazepine, amitryptyline hydrochloride and imipramine hydrochloride) were used to evaluate th
Publicado em: 2007