Preparation of a sulfoxide group and ammonium-salt bonded silica stationary phase for separation of polychlorinated biphenyls from mineral oils

Numata, Masahiko; Kaneko, Toshiro; Mi, Qiding; Ye, Michael; Kawamata, Satoshi; Matsuo, Mayumi; Yarita, Takashi

doi:10.1016/j.chroma.2008.09.038

Cited by 16 publications

(6 citation statements)

References 29 publications

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“…Sulfoxide-linked hydroxyl and diol phases displayed U-shaped retention curves for adenosine and guanosine, giving the opportunity to operate in both RP and HILIC (HydrophILic Interaction Chromatography) modes . A 58 mm silica stationary phase with embedded amide and terminal sulfoxide groups displayed improved normal-phase retention of polychlorinated biphenyls (PCBs) in mineral oils (Numata et al 2007)-performance further improved when an embedded amine was also incorporated into the structure (Numata et al 2008). The well-known RP=WAX (reversed-phase=weak anion exchange) phases also include a thioether linkage, which may contribute to the retention profile (Lammerhofer et al 2008).…”

Section: Sulfur-containing Embedded Phasesmentioning

confidence: 96%

Polar-Embedded and Polar-Endcapped Stationary Phases for LC

2010

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Polar-embedded and polar-endcapped phases have become widespread over the past decade. When compared to classical alkylsilicas, they offer an alternative selectivity profile, increased stability in highly aqueous mobile phases, and improved peak shape for basic analytes. This mini-review summarizes current knowledge and applications of these phases, including the recent development of a series of N-methylamide embedded phases, prepared using supercritical carbon dioxide.

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Section: Sulfur-containing Embedded Phasesmentioning

confidence: 96%

Polar-Embedded and Polar-Endcapped Stationary Phases for LC

2010

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“…Alkalinolysis with potassium hydroxide, treatment with sulfate or a florisil column, and gel permeation chromatography are commonly used. Supelclean™ sulfoxide and Discovery ® Ag-ION solid phase extraction cartridges (sulfoxide SPE and Ag-ION SPE) can remove oil (Numata et al, 2008). These columns are primarily used to analyze PCBs in mineral oil and have been used to analyze PCBs in sea sediments and chemical products (Anezaki, 2011;Anezaki and Nakano, 2015).…”

Section: Introductionmentioning

confidence: 99%

Concentration and congener pattern of polychlorinated biphenyls in blubber and liver of Hubbs' beaked whale (Mesoplodon carlhubbsi), using a sulfoxide and an Ag-ION solid phase extraction cartridge as a simplified cleanup technique for biological samples

Anezaki

Matsuda

Matsuishi

2016

Marine Pollution Bulletin

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We performed the first known study of polychlorinated biphenyls (PCBs) concentrations and patterns in the blubber and liver of a Hubbs' beaked whale. Samples were pretreated with Supelclean™ sulfoxide and Discovery® Ag-ION solid phase extraction cartridges to remove whale oil. PCB concentrations in the blubber and liver were 13,000 and 7300ng/g lipid, respectively. Highly poisonous congeners such as dioxin-like (DL) PCBs tended to accumulate in the liver. The toxic equivalents (TEQ) of DL-PCBs in the liver (740pg-TEQ/g lipid) were higher than those in the blubber (74pg-TEQ/g lipid). The blubber and liver samples showed that hexachlorinated biphenyls were dominant among homologues, and PCB-153 was dominant among congeners. Several congeners accumulated disproportionately in the blubber and the liver (PCB-28, 52, 74, 99, and 118), while others did not persist (PCB-31, 70, and 110). This indicates that PCBs are metabolized differently according to their specific composition.

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“…More advanced sorbent materials based on porogen imprinting and sulfoxide modification advancing the separation of PCBs from insulating oil have been reported by Tominaga et al 95 As the sulfoxide modification of silica stationary phases has been shown to increase the retention of PCBs by availing electrophilic sulfur for interaction with aromatic rings of PCBs, 96,97 it was postulated that such modifications of porogen-imprinted polymers may potentially further increase the PCB recognition properties. True to that hypothesis, sulfoxide-modified polymers were synthesized using xylene as the porogen, divinylbenzene, and chloromethylstyrene as crosslinker and functional monomer, respectively.…”

Section: Polychlorinated Biphenyls and Hydroxy-polychlorinated Biphenylsmentioning

confidence: 99%

Molecularly imprinted polymers for the analysis and removal of polychlorinated aromatic compounds in the environment: a review

Ndunda

Mizaikoff

2016

Analyst

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Synthetic receptors and in particular molecularly imprinted polymers (MIPs) are gaining relevance as selective sorbent materials and biomimetic recognition elements for analyzing polychlorinated aromatic compounds (PACs) in the environment. PACs are still ubiquitous toxic pollutants requiring their continuous environmental assessment for protecting humans and animals from exposure. Since nowadays most PACs occur at ultra-trace concentration levels and in complex matrices, the selectivity of MIPs renders them ideally suited for facilitating either sample pre-treatment and quantitative enrichment, or acting as biomimetic recognition elements as an integral component of corresponding sensing schemes. Due to the diversity of PACs, imprinting polymers for these constituents appears particularly challenging. This review focuses on prevalent strategies towards successfully templating polymer materials towards polychlorinated biphenyls and their hydroxy forms, chlorophenols, dioxins and furans, and organochlorine pesticides, and successful applications of the polymer materials in monitoring of these compounds at trace-levels in real-world environmental matrices. Discussed are also group-selective sorbents for facilitating simultaneous detection and quantification of PACs.

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Preparation of a sulfoxide group and ammonium-salt bonded silica stationary phase for separation of polychlorinated biphenyls from mineral oils

Cited by 16 publications

References 29 publications

Polar-Embedded and Polar-Endcapped Stationary Phases for LC

Polar-Embedded and Polar-Endcapped Stationary Phases for LC

Concentration and congener pattern of polychlorinated biphenyls in blubber and liver of Hubbs' beaked whale (Mesoplodon carlhubbsi), using a sulfoxide and an Ag-ION solid phase extraction cartridge as a simplified cleanup technique for biological samples

Molecularly imprinted polymers for the analysis and removal of polychlorinated aromatic compounds in the environment: a review

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