Gas Chromatographic Retention Indices, Mass, and Infrared Spectra of Industrially Important Adipate Esters

Guisto, R.; Smith, S. Ruven; Stuart, James D.; Hubball, J.

doi:10.1093/chromsci/31.6.225

Cited by 4 publications

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“…3(c) Similarly, all other major chemical background ions are investigated and they are also summarized in Scheme 1 as the specific family trees of a series of ions, which can be found in the product ion scan and precursor scan experiments. They are adipates- 15 and silicone-related chemical interference ions in API LC/MS (Scheme 1).…”

Section: Resultsmentioning

confidence: 99%

Characterization of typical chemical background interferences in atmospheric pressure ionization liquid chromatography‐mass spectrometry

Guo¹,

Bruins²,

Covey³

2006

Rapid Comm Mass Spectrometry

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The structures and origins of typical chemical background noise ions in positive atmospheric pressure ionization liquid chromatography/mass spectrometry (API LC/MS) are investigated and summarized in this study. This was done by classifying chemical background ions using precursor and product ion scans on most abundant background ions to draw a family tree of the commonly occurring chemical background ions. The possible structures and the origins of the major chemical background noise are clearly revealed in the family trees. In agreement with some suggestions in the literature, the chemical background ions studied so far can be classified mainly as either ions of contaminants (or their degradation fragments) or cluster-related ones. A significant contribution from the contaminants (airborne, from tubing and/or solvents) from plasticizer additives (phthalates, phenyl phosphates, sebacates and adipates, etc.) and silicones is concluded. These ions of contaminants can also serve as nuclei for the clustering of HPLC solvent or additives, such as water and acetic acid, thereby leading to a second family of background ions. This study explains the persistence of some chemical background noise even under fairly strong declustering conditions in API LC/MS. One of the other interesting conclusions is that there is a clear difference in structures between the chemical background ions and the protonated analytes generated under atmospheric pressure ionization. This conclusion will contribute to the on-going research efforts to exclusively remove or reduce the interference of chemical background noise in API LC/MS.

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Section: Resultsmentioning

confidence: 99%

Characterization of typical chemical background interferences in atmospheric pressure ionization liquid chromatography‐mass spectrometry

Guo¹,

Bruins²,

Covey³

2006

Rapid Comm Mass Spectrometry

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show abstract

“…Similarly, all other major chemical background ions are investigated and they are also summarized in Scheme as the specific family trees of a series of ions, which can be found in the product ion scan and precursor scan experiments. They are adipates‐15 and silicone‐related chemical interference ions in API LC/MS (Scheme ).…”

Section: Resultsmentioning

confidence: 99%

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et al. 2001

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The cover picture shows a perspective view of the crystal structure of a double helix formed from two oligomeric molecular strands of pyridine heterocycles connected through carboxamide functions. The color coded strands are shown in stick representations with solvent accessible surfaces. The folding of these oligomers into single helical conformations and their association into double helices held by hydrogen bonds and stacking interactions are described in detail by Lehn and Huc et al. on p. 2810 ff.(We thank C. Caroli from the Visual Design Softwareentwicklungs GmbH, Karlsruhe, for assistance in the preparation of the cover picture.)

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“…There are numerous published methodologies dealing with the determination of adipate plasticizers. Examples include FT‐Raman spectroscopy (Berg and Otero 2006), GC/FTIR (Guisto and others 1993), GC, and GC/MS (Hirayama and Kato 2001; Kato and Nakazawa 2003; Oka and others 2004; Zygoura and others 2005; Kueseng and others 2007). Among them, GC/MS is the most widely used techniques for determining adipate plasticizers (Kotsuka and Suzuki 1996, 1997; Katase and Kim 1999; Balafas and others 1999; Utagawa and others 1999; Tsumura and others 2000; Cano and others 2002; Kato and others 2002; Dalgaard and others 2003; Kato and Nakazawa 2003; Oka and others 2004; Wu and others 2006; Cao 2008; Goulas and others 2008).…”

Section: Introductionmentioning

confidence: 99%

GC/MS Method for the Determination of Adipate Plasticizers in Ham Sausage and Its Application to Kinetic and Penetration Studies

Wei¹,

Wang²,

Guo³

et al. 2009

Journal of Food Science

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A GC/MS method was developed and successfully validated for the determination of adipate plasticizers in ham sausage migrated from polyvinylidene chloride (PVDC) packaging film. The sample pretreatment includes liquid extraction, solvent evaporation, and reconstitution before and after solid phase extraction (SPE). For the 5 adipate plasticizers studied, the SPE process with Oasis MAX cartridge showed an extraction efficiency from 85.7% to 106%, and the calibration curves are all linear in the range of 5 to 1000 ng/g with correlation coefficients greater than 0.998. The method proved to be accurate and precise; the average intraday recovery ranges from 85.4% to 114.6% with a %CV value from 2.5 to 11.3, and the average interday recovery from 83.6% to 118.5% with a %CV value from 2.8 to 15.6, respectively, for the adipate plasticizers. The method is sensitive and was effectively applied in the kinetic and penetration studies of the adipate plasticizers migrating from food-grade PVDC packaging film into ham sausage. The experimental data showed that approximately 6.8% of dibutyl adipate (DBA) in the packaging film migrated into the ham sausage in 4 mo and the migration reached the innermost portion of the sausage in 6 mo.

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Gas Chromatographic Retention Indices, Mass, and Infrared Spectra of Industrially Important Adipate Esters

Cited by 4 publications

References 0 publications

Characterization of typical chemical background interferences in atmospheric pressure ionization liquid chromatography‐mass spectrometry

Characterization of typical chemical background interferences in atmospheric pressure ionization liquid chromatography‐mass spectrometry

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GC/MS Method for the Determination of Adipate Plasticizers in Ham Sausage and Its Application to Kinetic and Penetration Studies

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