Non-targeted screening and analysis of volatile organic compounds in drinking water by DLLME with GC–MS

Yang, Xin; Wang, Chang; Shao, Huancong; Zheng, Qi

doi:10.1016/j.scitotenv.2019.07.300

Cited by 20 publications

(4 citation statements)

References 38 publications

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“…Deionized water was used to allow the quantification, also in trace levels, of released elements/compounds that could have been masked by the use of tap water. Indeed, tap water usually contains minerals at various levels (from µg L −1 to mg L −1 ) and trace residues of organic compounds [27][28][29][30][31][32]. Additionally, the experiment should not be reproducible because the content of studied elements widely vary in different drinking waters according to their geographical and geological origin.…”

Section: Selection Of Reusable Water Bottles and Experimental Planningmentioning

confidence: 99%

Reusable Water Bottles: Release of Inorganic Elements, Phthalates, and Bisphenol A in a “Real Use” Simulation Experiment

et al. 2021

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Reusable water bottles are growing in popularity; thus, possible chemical release from the internal surface into water should be carefully considered to control related health risks. We experimentally evaluated the release into deionized water of 40 elements, six phthalates, and bisphenol-A for 20 different reusable bottles by simulating the use in real world scenario. The 20 bottles, identified as those most purchased in Italy, were made of various materials (stainless steel, aluminum, plastic, and silicone). The experiment was carried out for four consecutive weeks in duplicate for each type of bottle. Our results showed the release, to various extents, of inorganic elements from all 20 bottles, while the release of phthalates and bisphenol-A was never found. The elements most frequently released were Al, Sr, Mo, and Cr, while the highest concentrations were for Ca, K, Mg, and Na; the release of toxic elements (such as Pb, Cd, Ni, Sb) also occurred. The comparison of our results with regulatory limits on drinking water quality revealed no exceeding values except for Al. However, these releases represent a further intake, and the related risks cannot be neglected, especially for highly susceptible populations. Thus, it is essential to correctly inform consumers both with dedicated interventions and exhaustive labelling.

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Section: Selection Of Reusable Water Bottles and Experimental Planningmentioning

confidence: 99%

Reusable Water Bottles: Release of Inorganic Elements, Phthalates, and Bisphenol A in a “Real Use” Simulation Experiment

et al. 2021

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“…Entretanto, a solubilidade do solvente extrator, na solução aquosa, pode ser aumentada para volumes maiores de solvente dispersor, diminuindo o volume final da gota, portanto, em ambos os casos, influenciando na eficiência da extração. 28 O volume de solvente dispersor que apresentou melhor eficiência na extração foi de 300 μL de acetonitrila.…”

Section: Escolha Do Volume De Solvente Dispersor E Extratorunclassified

Desenvolvimento De Metodologias Analíticas Para Determinação De Clorpirifós Em Amostras Aquosas Empregando a Microextração Líquido-Líquido Dispersiva Seguida Por HPLC-Uv

Oliveira¹,

Honório²,

Matos³

et al. 2019

Quím. Nova

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Recebido em 15/05/2019; aceito em 27/08/2019; publicado na web em 04/12/2019 DEVELOPMENT OF ANALYTICAL METHODOLOGIES FOR THE DETERMINATION OF CHLORPYRYPHES IN AQUEOUS SAMPLES EMPLOYING THE DISPERSIVE LIQUID MICROEXTRACTION FOLLOWED BY HPLC-UV. The miniaturized extraction techniques use less aggressive methods to the environment, since they generate less waste and spend a minimum of organic solvents, besides having a good selectivity and specificity in the extractions. In this context, liquid-liquid dispersive microextraction (DLLME) has been highlighting. Thus, the present article describes an optimization of the DLLME using low environmental impact extractor solvent to determine the chlorpyrifos insecticide in water. The analytical curves presented values for the correlation coefficient (r) higher than 0.999. The limits of detection and quantification were 0.24 and 0.80 μg L-1 , respectively. There were recoveries between 93 and 97 %, with relative standard deviation (RSD) varying between 1.00 and 3.61%. The developed methods presented accurate and reliable results, are simple and safe, characteristics important for the implementation of a methodology as a routine analysis, and were applied in the determination of chlorpyrifos in water samples from five points along the Rio Dourados, near the city of Fátima do Sul.

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“…Most measurements of VOCs in liquid are performed using GC [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ]. It has the advantage of high sensitivity and can be operated on small volumes.…”

Section: Introductionmentioning

confidence: 99%

Analysis of VOCs in Liquids through Vaporization in a Tubular Oven Monitored by Chemical Ionization Mass Spectrometry

Abar,

Mestdagh,

Heninger

et al. 2024

Sensors

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The analysis of chemical compounds present at trace levels in liquids is important not only for environmental measurements but also, for example, in the health sector. The reference technique for the analysis of Volatile Organic Compounds (VOCs) in liquids is GC, which is difficult to use with an aqueous matrix. In this work, we present an alternative technique to GC to analyze VOCs in water. A tubular oven is used to completely vaporize the liquid sample deposited on a gauze. The oven is heated in the presence of a dinitrogen flow, and the gas is analyzed at the exit of the oven by a chemical ionization mass spectrometer developed in our laboratory. It is a low magnetic field Fourier Transform Ion Cyclotron Resonance (FT-ICR) optimized for real-time analysis. The Proton Transfer Reaction (PTR) used during the Chemical Ionization event results in the selective ionization of the VOCs present in the gas phase. The optimization of the desorption conditions is described for the main operating parameters: temperature ramp, liquid quantity, and nitrogen flow. Their influence is studied using a 100 ppmv aqueous toluene solution. The analytical method is then tested on a mixture of seven VOCs.

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Non-targeted screening and analysis of volatile organic compounds in drinking water by DLLME with GC–MS

Cited by 20 publications

References 38 publications

Reusable Water Bottles: Release of Inorganic Elements, Phthalates, and Bisphenol A in a “Real Use” Simulation Experiment

Reusable Water Bottles: Release of Inorganic Elements, Phthalates, and Bisphenol A in a “Real Use” Simulation Experiment

Desenvolvimento De Metodologias Analíticas Para Determinação De Clorpirifós Em Amostras Aquosas Empregando a Microextração Líquido-Líquido Dispersiva Seguida Por HPLC-Uv

Analysis of VOCs in Liquids through Vaporization in a Tubular Oven Monitored by Chemical Ionization Mass Spectrometry

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