Characterization of polycyclic aromatic hydrocarbons (PAHs) on lime spray dryer (LSD) ash using different extraction methods

Weavers, Linda K.; Taerakul, Panuwat; Walker, Harold W.

doi:10.1016/j.chemosphere.2005.05.014

Cited by 20 publications

(7 citation statements)

References 37 publications

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“…Recovery values from the seven replicate measurements averaged at 84.7% for soot samples with %RSD values of 7.4%. Similar recoveries were reported by other authors (Fischer et al, 1994;Sun et al, 2006). Concerning acenaphthene, this compound seems to be strongly retained by silica-C 18 SPE column and was found to elute hardly from the SPE column even for synthetic mixtures.…”

Section: Recovery Assayssupporting

confidence: 89%

Determination of Polycyclic Aromatic Hydrocarbons in kerosene and bio-kerosene soot

et al. 2010

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Here we report a new, efficient and reliable analytical methodology for sensitive and selective quantification of Polycyclic Aromatic Hydrocarbons (PAHs) in soot samples. The methodology developed is based on ultrasonic extraction of the soot-bound PAHs into small volumes of acetonitrile, purification of the extracts through C(18) Solid Phase Extraction (SPE) cartridges and analysis by Reverse Phase Liquid Chromatography (RPLC) with UV and fluorimetric detection. For the first time, we report the convenience of adapting the SPE procedure to the nature of the soot samples. As a matter of fact, extracts containing high percentage of unpolar material are recommended to be cleaned with acetone, whereas extracts poor in unpolar compounds can be efficiently cleaned with methanol. The method was satisfactorily applied to kerosene and bio-kerosene soot from atmospheric open diffusion flames (pool fires) and premixed flames achieving Quantification and Detection limits in the range ng mg(-1) soot and recoveries about 90% for most of the PAHs studied.

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Section: Recovery Assayssupporting

confidence: 89%

Determination of Polycyclic Aromatic Hydrocarbons in kerosene and bio-kerosene soot

et al. 2010

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“…[19][20][21] Although capable of yielding good results and the recommendation by the US Environmental Protection Agency 22 as the standard method for hydrocarbon determination in environmental matrices, this method presents a number of disadvantages such as high solvent consumption (60 to 200 mL) and long extraction times (6-48 h). Despite these disadvantages, Soxhlet extraction remains the most suggested guideline method when hydrocarbons fingerprinting data are used in environmental litigation involving oil and its derivatives spills and accidents, for example.…”

Section: Introductionmentioning

confidence: 99%

Optimization of an analytical protocol for the extraction, fractionation and determination of aromatic and aliphatic hydrocarbons in sediments

Ferreira¹,

Gouveia²,

Silva³

et al. 2012

J. Braz. Chem. Soc.

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Neste trabalho foram aperfeiçoadas as etapas para determinação de hidrocarbonetos alifáticos e aromáticos em sedimentos. Durante as etapas de extração e concentração foram avaliados fatores determinantes como tempo, solvente extrator e sistema de resfriamento. Quanto ao cleanup, foram estudados diferentes volumes e misturas de solventes de eluição. Os resultados obtidos foram considerados aceitáveis (70-120%). A linearidade, limites de detecção e quantificação foram estudados construindo-se curvas analíticas (R > 0,99) com valores que demonstraram grande sensibilidade do método. A precisão e exatidão foram avaliadas com ensaios envolvendo material de referência certificado e adição e recuperação de analitos em sulfato de sódio. Nos testes de adição e recuperação os desvios ficaram abaixo de 20%, com recuperação dos alifáticos e aromáticos de 59-105% e 55-113%, respectivamente. Para os sedimentos de referência, os desvios obtidos foram inferiores aos valores certificados, com recuperações satisfatórias. O presente trabalho proporcionou a melhoria de um método já consolidado, possibilitando obter resultados com elevada confiabilidade analítica.The main steps involved in the determination of aliphatic and aromatic hydrocarbons in sediments were evaluated in this work. In the extraction, factors such as the cooling system, time and solvent were evaluated. During the extraction and concentration, steps aspects such as time, extraction solvent and cooling system were evaluated. In the cleanup different solvents and elution mixtures were studied. The results were considered satisfactory (70-120%). Linearity and limits of detection and quantification were studied by means of calibration curves (R > 0.90) and the results demonstrated high sensitivity of the method. Precision and accuracy were studied by recovery tests using a certified reference material and sodium sulfate. In recovery tests, the standard deviations were below 20%, with percent recoveries for aliphatic and aromatics ranging from 59 to 105% and 55 to 113%, respectively. For the reference sediment, the standard deviations were lower than the certified values, with satisfactory recovery values. The present work provided a way of improving an already established method with high analytical reliability.

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“…Extractions to quantify PAH concentrations in the sediment were performed before and after US treatment experiments. EPA method 3550C for med/high predicted contamination range was used [36] with toluene as the extraction solvent [50] . Pyrene-d10 was used as the surrogate standard.…”

Section: Methodsmentioning

confidence: 99%

Using solid-phase microextraction during ultrasound reveals higher aqueous PAHs release from contaminated sediment

Kohan

Lanno

Weavers

2022

Ultrasonics Sonochemistry

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Characterization of polycyclic aromatic hydrocarbons (PAHs) on lime spray dryer (LSD) ash using different extraction methods

Cited by 20 publications

References 37 publications

Determination of Polycyclic Aromatic Hydrocarbons in kerosene and bio-kerosene soot

Determination of Polycyclic Aromatic Hydrocarbons in kerosene and bio-kerosene soot

Optimization of an analytical protocol for the extraction, fractionation and determination of aromatic and aliphatic hydrocarbons in sediments

Using solid-phase microextraction during ultrasound reveals higher aqueous PAHs release from contaminated sediment

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