Coating of Solid-Phase Microextraction Fibers with Chemically Bonded Silica Particles: Selective Extraction of Polycyclic Aromatic Hydrocarbons from Drinking Water Samples

Rodrigues, Raphael; Lacerda, Cristina Broglia Feitosa de; Lanças, Fernando Mauro

doi:10.1093/chromsci/40.9.489

Cited by 13 publications

(5 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The contribution of contaminated drinking water (Rodrigues, Lacerda, and Lancas 2002) to PAH intake is relatively low compared to food. These chemicals are carried via long-range atmospheric transport to contaminate the open-air drinking water supplies.…”

Section: Pahs In Foods and Dietary Exposure Of Humansmentioning

confidence: 99%

“…These findings are in broad agreement with those of Kazerouni et al (2001) in that grain and raw/leafy vegetables had relatively high B[a]P levels. The contribution of contaminated drinking water (Rodrigues, Lacerda, and Lancas 2002) to PAH intake is relatively low compared to food. These chemicals are carried via long-range atmospheric transport to contaminate the open-air drinking water supplies.…”

Section: Pahs In Foods and Dietary Exposure Of Humansmentioning

confidence: 99%

See 1 more Smart Citation

Bioavailability and Risk Assessment of Orally Ingested Polycyclic Aromatic Hydrocarbons

Ramesh¹,

Walker²,

et al. 2004

View full text Add to dashboard Cite

Polycyclic aromatic hydrocarbons (PAHs) are a family of toxicants that are ubiquitous in the environment. These contaminants generate considerable interest, because some of them are highly carcinogenic in laboratory animals and have been implicated in breast, lung, and colon cancers in humans. These chemicals commonly enter the human body through inhalation of cigarette smoke or consumption of contaminated food. Of these two pathways, dietary intake of PAHs constitutes a major source of exposure in humans. Although many reviews and books on PAHs have been published, factors affecting the accumulation of PAHs in the diet, their absorption following ingestion, and strategies to assess risk from exposure to these hydrocarbons following ingestion have received much less attention. This review, therefore, focuses on concentrations of PAHs in widely consumed dietary ingredients along with gastrointestinal absorption rates in humans. Metabolism and bioavailability of PAHs in animal models and the processes, which influence the disposition of these chemicals, are discussed. The utilitarian value of structure and metabolism in predicting PAH toxicity and carcinogenesis is also emphasized. Finally, based on intake, disposition, and tumorigenesis data, the exposure risk to PAHs from diet, and contaminated soil is presented. This information is expected to provide a framework for refinements in risk assessment of PAHs from a multimedia exposure perspective.

show abstract

Section: Pahs In Foods and Dietary Exposure Of Humansmentioning

confidence: 99%

Section: Pahs In Foods and Dietary Exposure Of Humansmentioning

confidence: 99%

Bioavailability and Risk Assessment of Orally Ingested Polycyclic Aromatic Hydrocarbons

Ramesh¹,

Walker²,

et al. 2004

View full text Add to dashboard Cite

show abstract

“…Fluoranthene (Flu) and Pyrene (Pyr) are among the intermediate molecular weights' PAHs [18]. Compared to the eight other PAHs, Flu and Pyr concentrations present some significant differences between the MM_19 model and the experimental results.…”

Section: Intermediate Molecular Weights' Pahsmentioning

confidence: 99%

Modelling PAHs Transfer from Polluted Soil to Herbaceous Species in Phytoremediation Attempts

Nguemte¹,

Noumsi²,

Wafo³

et al. 2020

Water

View full text Add to dashboard Cite

To address the soil–plant transfer modelling of 13 US-EPA Polycyclic Aromatic Hydrocarbons (PAHs), a mechanistic model—MM_19—has been developed based on the fugacity concept. For that, the Mackay_97 model has been improved in terms of reconsidering the losses related to the transport and transformation mechanisms taking place in the compartments—roots and aboveground shoots—of the three short-life species (Eleusine indica, Cynodon dactylon and Alternanthera sessilis). Model input parameters consist of both experimental and literature data, including the initial soil and air PAHs content, flowrates, PAHs physico-chemical properties, retention times and transport half-lives of PAHs inside plant species. Using in situ weather data and Penman’s law, xylem flows were estimated as the evapotranspiration for each plant. Model calibration was performed using a Generalized Reduced Gradient (GRG) nonlinear optimization solver method. Sensitivity analysis showed that the phloem flow was the most sensitive among all tested parameters. According to the Nash–Sutcliffe efficiency (NSE), the MM_19 model is more efficient than the Mackay_97 model for all three plant species. Finally, the impact of PAHs physico-chemical parameters on their sol-plant transfer was discussed in terms of slight, intermediate and high molecules weight. The NSE values showed that the MM_19 model is more efficient than the Mackay_97 model. Indeed, comparisons between experimental and simulated results in the MM_19 model showed similarities for each compartment of the plant species. Thus, the MM_19 model can be used to predict the soil–plant transfer of organic pollutants.

show abstract

“…To overcome this limitation, several laboratories have developed new fibers for their own use. 32,33 Stir Bar Sorptive Extraction (SBSE) is a recently developed technique, 34 aiming to be an extension of SPME. It uses a set up similar to the later but instead of a fiber it uses a stir bar coated with a polydimethylsiloxane (PDMS) film.…”

Section: Extraction Of Liquid Samplesmentioning

confidence: 99%

The role of the separation sciences in the 21th century

Lanças¹

2003

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

Esta revisão examina, de um ponto de vista crítico, o papel das ciências da separação no novo século, considerando a complexidade dos problemas a serem enfrentados. De forma a tornar a exposição mais dinâmica, uma determinação típica de um analito orgânico hipotético em uma matriz complexa é usado para introduzir criticamente as principais técnicas de separação empregadas atualmente. Técnicas as quais promovem uma redução ou mesmo a total eliminação do uso de solventes tóxicos são enfatizadas. Após esta avaliação o autor discute as tendências futuras nesta área, com ênfase na miniaturização das técnicas; a automação total da análise, o uso de técnicas hifenadas, o papel ainda sub-explorado dos solventes em técnicas de separação, e o desenvolvimento da cromatografia de transição de fase e da cromatografia unificada.This review examines, from a critical point-of-view, the role of the separation sciences in the new century considering the complexity of the problems to be faced. To make the exposition more dynamic the determination of a typical (hypothetical) organic analyte in a complex matrix is used to critically introduce the major separation techniques used nowadays. Techniques that promote the reduction or that fully eliminate the use of toxic solvents are stressed. After this evaluation the author discusses the future trends in this area with emphasis on the miniaturization of the instrumental techniques, the full automation of the analyses, the use of hyphenated techniques, the under-explored role of the solvents in separation techniques, the development of transition phase chromatography and unified chromatography.

show abstract

Coating of Solid-Phase Microextraction Fibers with Chemically Bonded Silica Particles: Selective Extraction of Polycyclic Aromatic Hydrocarbons from Drinking Water Samples

Cited by 13 publications

References 16 publications

Bioavailability and Risk Assessment of Orally Ingested Polycyclic Aromatic Hydrocarbons

Bioavailability and Risk Assessment of Orally Ingested Polycyclic Aromatic Hydrocarbons

Modelling PAHs Transfer from Polluted Soil to Herbaceous Species in Phytoremediation Attempts

The role of the separation sciences in the 21th century

Contact Info

Product

Resources

About