Simultaneous extraction and concentration of water pollution tracers using ionic-liquid-based systems

Dinis, Teresa B. V.; Passos, Helena; Lima, Diana L.D.; Silva, Ana Catarina; Coutinho, João A. P.; Esteves, Valdemar I.; Freire, Mara G.

doi:10.1016/j.chroma.2017.07.084

Cited by 26 publications

(20 citation statements)

References 49 publications

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“…Solubility determinations allowed to estimate the maximum allowable CF of pharmaceutical tracers in the IL-rich phase, which mainly depends on solute physical-chemical properties and IL structure. Dinis et al [127] investigated ABS composed of several hydrophilic ILs and the organic salt K 3 C 6 H 5 O 7 for the simultaneous extraction and concentration of two well-known human pollution tracers, namely caffeine (CAF) and carbamazepine (CBZ). The ILs…”

Section: Il-based Absmentioning

confidence: 99%

Advances Brought by Hydrophilic Ionic Liquids in Fields Involving Pharmaceuticals

et al. 2021

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The negligible volatility and high tunable nature of ionic liquids (ILs) have been the main drivers of their investigation in a wide diversity of fields, among which is their application in areas involving pharmaceuticals. Although most literature dealing with ILs is still majorly devoted to hydrophobic ILs, evidence on the potential of hydrophilic ILs have been increasingly provided in the past decade, viz., ILs with improved therapeutic efficiency and bioavailability, ILs with the ability to increase drugs' aqueous solubility, ILs with enhanced extraction performance for pharmaceuticals when employed in biphasic systems and other techniques, and ILs displaying low eco/cyto/toxicity and beneficial biological activities. Given their relevance, it is here overviewed the applications of hydrophilic ILs in fields involving pharmaceuticals, particularly focusing on achievements and advances witnessed during the last decade. The application of hydrophilic ILs within fields involving pharmaceuticals is here critically discussed according to four categories: (i) to improve pharmaceuticals solubility, envisioning improved bioavailability; (ii) as IL-based drug delivery systems; (iii) as pretreatment techniques to improve analytical methods performance dealing with pharmaceuticals, and (iv) in the recovery and purification of pharmaceuticals using IL-based systems. Key factors in the selection of appropriate ILs are identified. Insights and perspectives to bring renewed and effective solutions involving ILs able to compete with current commercial technologies are finally provided.

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Section: Il-based Absmentioning

confidence: 99%

Advances Brought by Hydrophilic Ionic Liquids in Fields Involving Pharmaceuticals

et al. 2021

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“…Improve the diffusion and mass transfer rate No commercial kit Freire (2016); Iqbal et al (2016); Dinis et al (2018); Buarque et al (2019) eutrophicated and deplete the amount of oxygen available to animal life (Stayner et al, 2017).…”

Section: Advantages Limitations Referencesmentioning

confidence: 99%

“…Chromatographic techniques (such as gas chromatography (GC) (Zhang et al., 2019) and ultra‐fast liquid chromatography (UFLC) (Li et al., 2016)) have been recurrently used for the identification and quantification of pesticides in aqueous environments. However, due to the high limits of detection of more conventional analytical equipment, a preconcentration step of the target compound is required (Dinis et al., 2018). The preconcentration methods employed present several disadvantages such as the use of large amounts of hazardous volatile organic compounds, time consuming, low accuracy, and high‐cost processes, as can be seen in Exhibit 1 .…”

Section: Introductionmentioning

confidence: 99%

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Preconcentration and chromatographic detection of atrazine in real water sample using aqueous two‐phase system based on tetrahydrofuran and glycerol

Buarque

Lima

Soares

et al. 2021

Environmental Quality Mgmt

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Environmental contamination by atrazine leads to serious environmental impact. The low concentrations of atrazine in aqueous media render its identification and quantification difficult. In this context, aqueous two‐phase systems based on tetrahydrofuran (THF) + glycerol were tested as simultaneous recovery and preconcentration platforms of atrazine from real water samples. The phase diagrams were determined, and it was reported that the phase separation ability largely depends on the number of hydroxyl groups present in each polyol. Posteriorly, the atrazine was partitioned to the THF‐rich phase and presented recovery values between 70.9 (KATZ = 2.9) and 96.5% (KATZ = 15.2). The computational predictive method (COSMO‐RS) was used, aiming to confirm the atrazine partitioning for the THF‐rich phase. In addition, a 250‐fold preconcentration factor was achieved using a mixture point of 3.27 wt% of THF + 93.98 wt% of glycerol + 2.75 wt% of real water sample. This preconcentration factor and subsequent use of UFLC‐TOF permitted the identification and quantification of atrazine in real samples of water collected in the hydrographic basin from the Japaratuba River, in the state of Sergipe, Brazil. The protocol presented values of 95‒2400 ng L−1 of atrazine with a limit of detection of 50 ng L−1.

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“…Wine samples HPLC [285] Organophosphorus pesticides Water GC-MS [286] Polycyclic aromatic hydrocarbons Water HPLC [287] Zinc Water and milk FAAS [288] Bisphenol A Human fluids HPLC-MS [289] Emerging contaminants Water HPLC-UV/Vis [290] Fluoroquinolones and NSAIDs Water HPLC-DAAD [291] Aromatic amines Water HPLC [292] Organophosphate esters water GC-MS [293] Emerging pollutants Water HPLC-UV [294] Pollutants Water HPLC-UV [295] Triazine herbicides Water HPLC-UV [296] Neonicotinoids Honey HPLC-DAAD [297] Organophosphorus pesticides and aromatic compounds Tap, rain and river water HPLC-UV [16] Cadmium Water ETAAS [298] HPLC: high-performance liquid chromatography; FAAS: flame atomic absorption spectrometry; GC-MS: gas chromatography mass spectrometry; NSAIDs: nonsteroidal anti-inflammatory drugs; ETAAS: electrothermal atomic absorption spectrometry.…”

Section: Sulfonylurea Herbicidesmentioning

confidence: 99%

Green Approaches to Sample Preparation Based on Extraction Techniques

Aly

Górecki

2020

Molecules

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Preparing a sample for analysis is a crucial step of many analytical procedures. The goal of sample preparation is to provide a representative, homogenous sample that is free of interferences and compatible with the intended analytical method. Green approaches to sample preparation require that the consumption of hazardous organic solvents and energy be minimized or even eliminated in the analytical process. While no sample preparation is clearly the most environmentally friendly approach, complete elimination of this step is not always practical. In such cases, the extraction techniques which use low amounts of solvents or no solvents are considered ideal alternatives. This paper presents an overview of green extraction procedures and sample preparation methodologies, briefly introduces their theoretical principles, and describes the recent developments in food, pharmaceutical, environmental and bioanalytical chemistry applications.

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Simultaneous extraction and concentration of water pollution tracers using ionic-liquid-based systems

Cited by 26 publications

References 49 publications

Advances Brought by Hydrophilic Ionic Liquids in Fields Involving Pharmaceuticals

Advances Brought by Hydrophilic Ionic Liquids in Fields Involving Pharmaceuticals

Preconcentration and chromatographic detection of atrazine in real water sample using aqueous two‐phase system based on tetrahydrofuran and glycerol

Green Approaches to Sample Preparation Based on Extraction Techniques

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