Shape selectivity assessment of stationary phases in gas chromatography

Sander, Lane C.; Schneider, Manfred; Wise, Stephen A.

doi:10.1002/mcs.1220060205

Cited by 32 publications

(17 citation statements)

References 27 publications

(5 reference statements)

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“…The latter is overcome by the use of a more polar stationary phase such as 50% phenyl methyl polysiloxane (i. e. DB-17MS type columns) [9,10]. Liquid-crystalline columns have also been reported to provide satisfactory separation of critical pairs that coelute on DB-5 type capillary columns such as Chr and triphenylene, the benzofluoranthene isomers and dibenz[a,c]anthracene (DacA) and DahA [4,11]. The main drawbacks typically associated to the use of this stationary phase are a limited maximum operation temperature, high bleeding and poor batch to batch reproducibility, which render its use for routine analysis scarce.…”

Section: Statisticsmentioning

confidence: 98%

“…Medium polar stationary phases such as 50% phenyl polysiloxane columns have been reported to provide satisfactory resolution of several critical pairs, including the benzofluoranthene and the dibenzoanthracene isomers, pointing to this stationary phase as a good choice for PAHs separation [4,9,10]. Liquid crystalline stationary phases have been also described to be well suited for the separation of PAHs isomers [4,11,12]. Up to now, very few studies addressed the determination of the new set of EU priority PAHs to be monitored in foodstuff [13,14].…”

Section: Introductionmentioning

confidence: 97%

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Optimisation of the GC‐MS conditions for the determination of the 15 EU foodstuff priority polycyclic aromatic hydrocarbons

Bordajandi¹,

Dabrio

Ulberth

et al. 2008

J of Separation Science

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European legislation has recently established a list of 15 priority polycyclic aromatic hydrocarbons (PAHs) to be monitored in foodstuff. Thus, the accurate determination of these compounds has become a highly relevant issue. The fact that some of these European Union (EU) PAHs differ from those typically analysed, requires the re-evaluation of the instrumental conditions for the proper determination of the new target compounds. In this study, the influence of the stationary phase and dimensions of the GC capillary column on the chromatographic resolution of the 15 EU PAHs has been investigated. Apolar (DB-5 type) and medium polar (DB-17 type) stationary phases with different lengths and film thickness have been evaluated for the separation of the target compounds, with special emphasis on those coelutions involving isomers such as the three benzofluoranthenes included in the EU PAHs. In addition, the influence of the injection technique and the column dimensions on the recovery of the high molecular mass PAHs has been studied. A programmable temperature vaporising (PTV) injector has been used in three different operational modes and the results were compared to those obtained using on-column injection. The experimental parameters involved in the injection step were optimised by using experimental design.

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Section: Statisticsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 97%

Optimisation of the GC‐MS conditions for the determination of the 15 EU foodstuff priority polycyclic aromatic hydrocarbons

Bordajandi¹,

Dabrio

Ulberth

et al. 2008

J of Separation Science

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“…However, results were obtained only for triphenylene and the three benzofluoranthene isomers, and only triphenylene was denoted as a certified value. Even though the liquid crystalline phase has excellent selectivity for PAH separations, it has some limitations regarding reproducibility of retention times, different selectivity among columns, and loss of stationary phase with extended use (14). Thus, the liquid crystalline phase may not be considered suitable for routine PAH analyses, but can provide valuable quantitative information on selected isomers that cannot be obtained otherwise by GC/MS.…”

Section: First-generation Natural Matrix Srms For Pacsmentioning

confidence: 96%

Standard Reference Materials (SRMs) for the Determination of Polycyclic Aromatic Compounds--Twenty Years of Progress

Wise¹

2002

Polycyclic Aromatic Compounds

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“…Chrysene and triphenylene, benzo[b]-and benzo[j]fluoranthene, and dibenz[a,c]-and dibenz[a,h]anthracene separate on the liquid crystalline phase column [16], although it can be difficult to measure the higher molecular weight PAHs (>276). This limitation is the result of a narrow operating temperature range [30]. For example, only about nine PAHs could be easily measured in SRM 1974a with this column [7,8].…”

Section: Pah Concentrationsmentioning

confidence: 99%

Three new mussel tissue standard reference materials (SRMs) for the determination of organic contaminants

Poster

Schantz

Kucklick

et al. 2004

Analytical and Bioanalytical Chemistry

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Three new mussel tissue standard reference materials (SRMs) have been developed by the National Institute of Standards and Technology (NIST) for the determination of the concentrations of organic contaminants. The most recently prepared material, SRM 1974b, is a fresh frozen tissue homogenate prepared from mussels ( Mytilus edulis) collected in Boston Harbor, Massachusetts. The other two materials, SRMs 2977 and 2978, are freeze-dried tissue homogenates prepared from mussels collected in Guanabara Bay, Brazil and Raritan Bay, New Jersey, respectively. All three new mussel tissue SRMs complement the current suite of marine natural-matrix SRMs available from NIST that are characterized for a wide range of contaminants (organic and inorganic). SRM 1974b has been developed to replace its predecessor SRM 1974a, Organics in Mussel Tissue, for which the supply is depleted. Similarly, SRMs 2977 and 2978 were developed to replace a previously available (supply depleted) freeze-dried version of SRM 1974a, SRM 2974, Organics in Freeze-Dried Mussel Tissue. SRM 1974b is the third in a series of fresh frozen mussel tissue homogenate SRMs prepared from mussels collected in Boston Harbor starting in 1988. SRM 1974b has certified concentration values for 22 polycyclic aromatic hydrocarbons (PAHs), 31 polychlorinated biphenyl congeners (PCBs), and 7 chlorinated pesticides. Reference values are provided for additional constituents: 16 PAHs, 8 PCBs plus total PCBs, 6 pesticides, total extractable organics, methylmercury, and 11 trace elements. PAH concentrations range from about 2 ng g(-1 )dry mass (cyclopenta[ cd]pyrene) to 180 ng g(-1 )dry mass (pyrene). PCB concentrations range from about 2 ng g(-1 )dry mass (PCB 157) to 120 ng g(-1 )dry mass (PCB 153). The reference value for total PCBs in SRM 1974b is (2020 +/- 420) ng g(-1 )dry mass. Pesticide concentrations range from about 4 ng g(-1 )dry mass (4,4'-DDT) to 40 ng g(-1 )dry mass (4,4'-DDE). SRM 2977 has certified values for 14 PAHs, 25 PCB congeners, 7 pesticides, 6 trace elements, and methylmercury. Reference values for 16 additional PAHs and 9 inorganic constituents are provided, and information values are given for 23 additional trace elements. SRM 2978 has certified and reference concentrations for 41 and 22 organic compounds, respectively, and contains contaminant levels similar to those of SRM 1974b. Organic contaminant levels in SRM 2977 (mussels from Guanabara Bay, Brazil) are typically a factor of 2 to 4 lower than those in SRM 1974b and SRM 2978. The organic contaminant concentrations in each new mussel tissue SRM are presented and compared in this paper. In addition, a chronological review of contaminant concentrations associated with mussels collected in Boston Harbor is discussed as well as a stability assessment of SRM 1974a.

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Shape selectivity assessment of stationary phases in gas chromatography

Cited by 32 publications

References 27 publications

Optimisation of the GC‐MS conditions for the determination of the 15 EU foodstuff priority polycyclic aromatic hydrocarbons

Optimisation of the GC‐MS conditions for the determination of the 15 EU foodstuff priority polycyclic aromatic hydrocarbons

Standard Reference Materials (SRMs) for the Determination of Polycyclic Aromatic Compounds--Twenty Years of Progress

Three new mussel tissue standard reference materials (SRMs) for the determination of organic contaminants

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