Recovery of polycyclic aromatic hydrocarbons sorbed on fly ash for quantitative determination

Griest, W.H.; Yeatts, L. B.; Caton, J.E.

doi:10.1021/ac50051a048

Cited by 70 publications

(36 citation statements)

References 19 publications

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“…(3-10) and (3)(4)(5)(6)(7)(8)(9)(10)(11) to fit the PISCES data are summarized in Table 3-13. In generating Table 3-13, the entire set of available data was used for each element.…”

Section: Summary Of Resultsmentioning

confidence: 99%

“…Using the empirical approach described in Eq. (3)(4)(5)(6)(7)(8)(9)(10)(11), an r correlation coefficient of 0.72 was 2 reported by EPRI (34 datasets). In all cases, the intercept (concentration at which E equal to i zero) was calculated from the regression analysis.…”

Section: Arsenicmentioning

confidence: 87%

“…Macroreticular resins used for sorption of PAH are particularly notorious for introducing artifacts. Therefore, even though many species can be collected by the 9 EPA methods used, other species may have escaped detection.…”

Section: -49 Evaluation Of Findingsmentioning

confidence: 99%

“…This compares favorably with the regression coefficient of 0.83 reported by EPRI in its analysis of the data using the empirical relation of Eq. (3)(4)(5)(6)(7)(8)(9)(10)(11). These trends are shown in Figures 3-31 through 3-33.…”

Section: Berylliummentioning

confidence: 99%

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Toxic substances form coal combustion--a co prehemsice assessment

Huggins¹,

Huffman²,

Shah³

1997

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The Clean Air Act Amendments of 1990 identify a number of hazardous air pollutants (HAPs) as candidates for regulation. Should regulations be imposed on HAP emissions from coal-fired power plants, a sound understanding of the fundamental principles controlling the formation and partitioning of toxic species during coal combustion will be needed. With support from the Federal Energy Technology Center (FETC), the Electric Power Research Institute, and VTT (Finland), Physical Sciences Inc. (PSI) has teamed with researchers from USGS, MIT, the University of Arizona (UA), the University of Kentucky (UKy), the University of Connecticut, and Princeton University to develop a broadly applicable emissions model useful to regulators and utility planners. The new Toxics Partitioning Engineering Model (ToPEM) will be applicable to all combustion conditions including new fuels and coal blends, low-NO combustion systems, x and new power generation plants. Development of ToPEM will be based on PSI's existing Engineering Model for Ash Formation (EMAF). During the last quarter coal analysis was completed on the final program coal, from the Wyodak Seam of the Powder River Basin. Combustion testing continued, including data collected on the self-sustained combustor at UA. Data from PSI and MIT were used to identify the governing mechanisms for trace element vaporization from the program coals. Mercury speciation and measurements were continued. Review of the existing trace element and organics emissions literature was completed. And, model development was begun.iv A description of the work plan for accomplishing these objectives is presented in Section 2.1 of this report.The work discussed in this report highlights the accomplishments of the sixth quarter of this program. These accomplishments include completion of standard coal analysis on the final Phase I program coal. The selective leaching work, to determine the forms of occurrence of various trace elements, was completed for the three bituminous coals. Data from the combustion zone experiments at PSI and MIT were analyzed to explore the observed differences between the two facilities and to determine the dominant mechanisms for trace element vaporization. The review of the existing trace element and organics emissions data from power plants was completed. Two major combustion experiments were completed on the self-sustained reactor at UA. Finally, work was begun to identify the models, and model parameters, required for ToPEM development, and how these models can be incorporated into the existing Engineering Model for Ash Formation (EMAF) Specifically, in the last quarter the trace element concentration analysis was completed for the Wyodak coal. This analysis indicated that the concentrations of trace elements in this coal are within the range of the bituminous coals in this program, with the exception of arsenic. The concentration of this element, and that of chromium, is much lower than was found in the other program coals. The CCSEM analysis of this coal are ...

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“…(3-10) and (3)(4)(5)(6)(7)(8)(9)(10)(11) to fit the PISCES data are summarized in Table 3-13. In generating Table 3-13, the entire set of available data was used for each element.…”

Section: Summary Of Resultsmentioning

confidence: 99%

Section: Arsenicmentioning

confidence: 87%

Section: -49 Evaluation Of Findingsmentioning

confidence: 99%

Section: Berylliummentioning

confidence: 99%

See 2 more Smart Citations

Toxic substances form coal combustion--a co prehemsice assessment

Huggins¹,

Huffman²,

Shah³

1997

View full text Add to dashboard Cite

show abstract

“…The efficiency of the various available procedures depends on the chemical and physical structure of the sample, properties of the extraction solvent and extraction conditions such as time and temperature. The physical and chemical nature of the collected aerosol sample play an important role in extraction efficiencies (Fitc and Smith, 1979;Griest et al, 1980). Domestic stove smoke aerosol partly consists of carbonaceous particles of small size ranges (< 10 ~m), so exposing a large adsorption area.…”

Section: Introductionmentioning

confidence: 99%

Extraction and determination of polycyclic aromatic hydrocarbons from domestic stove aerosol

Claessens¹,

Bueren²,

Ven³

1986

Journal of Aerosol Science

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Determination of polycyclic aromatic hydrocarbons in coal fly ash using gas chromatography/negative ion chemical ionization mass spectrometry

Low

Batley

Lidgard

et al. 1986

Biol. Mass Spectrom.

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This study reports studies using electron capture negative ion chemical ionization gas chromatographylmass spectrometry (EC-NICI G U M S ) of 21 polycyclic aromatic hydrocaroon (PAH) compounds. The selectivity and sensitivity of these compounds are shown here to be highly dependent on ion source temperature and pressure. Changes in selectivity arise from variations in instrumental parameters and can be largely explained by the competitive formation processes of [MI-' and[M-HIions. The formation of the adduct ion, [M+ 15]-, previously attributed to [M + CH,]-, is shown here by using perdeuterated PAH analogues to be a [M + 0 -HIion. For fluorene and acenaphthene, abundant [M + 141-and [M + 131-ions can be similarly rationalized to be [M+ 0 -2H]and [M+ 0 -3H]-. The NICI mass spectrum of (*HIo)acenaphthene demonstrates that ring proton losses most likely occur. This study also indicates that there is a strong correlation between the NICI response factor and the reported carcinogenic activity of PAHs in the literature. In addition, this work assesses the viability of NICI G U M S as an analytical technique for determining PAHs in fly ash with minimum sample pretreatment. ~~ ~ EXPERIMENTAL Chemicals and ReagentsPAH reference compounds of 95-99% purity were purchased from severai sources: naphthaiene, acena-

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Recovery of polycyclic aromatic hydrocarbons sorbed on fly ash for quantitative determination

Cited by 70 publications

References 19 publications

Toxic substances form coal combustion--a co prehemsice assessment

Toxic substances form coal combustion--a co prehemsice assessment

Extraction and determination of polycyclic aromatic hydrocarbons from domestic stove aerosol

Determination of polycyclic aromatic hydrocarbons in coal fly ash using gas chromatography/negative ion chemical ionization mass spectrometry

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