Identification of Carboxylic Acids in Alkyd and Polyester Coating Resins by Programmed Temperature Gas Chromatography.

Esposito, George G.; Swann, M. H.

doi:10.1021/ac60189a005

Cited by 44 publications

(5 citation statements)

References 17 publications

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“…Such compounds are naturally present in plant oils or may form from heating of animal fats 23,51,59,61 , which is our case. Azelaic and sebacic acid are sometimes used in organic polymeric resin mixtures 63 , and specifically azelaic acid was identified among the resin control samples (R1 and R4), hindering the possibility of using α-ω-dicarboxylic acids as potential biomarkers in DD samples.…”

Section: Discussionmentioning

confidence: 99%

Micro-contextual identification of archaeological lipid biomarkers using resin-impregnated sediment slabs

Vera

Herrera‐Herrera

Jambrina‐Enríquez

et al. 2020

Sci Rep

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Characterizing organic matter preserved in archaeological sediment is crucial to behavioral and paleoenvironmental investigations. This task becomes particularly challenging when considering microstratigraphic complexity. Most of the current analytical methods rely on loose sediment samples lacking spatial and temporal resolution at a microstratigraphic scale, adding uncertainty to the results. Here, we explore the potential of targeted molecular and isotopic biomarker analysis on polyester resin-impregnated sediment slabs from archaeological micromorphology, a technique that provides microstratigraphic control. We performed gas chromatography–mass spectrometry (GC–MS) and gas chromatography–isotope ratio mass spectromety (GC–IRMS) analyses on a set of samples including drill dust from resin-impregnated experimental and archaeological samples, loose samples from the same locations and resin control samples to assess the degree of interference of polyester resin in the GC–MS and Carbon-IRMS signals of different lipid fractions (n-alkanes, aromatics, n-ketones, alcohols, fatty acids and other high polarity lipids). The results show that biomarkers within the n-alkane, aromatic, n-ketone, and alcohol fractions can be identified. Further work is needed to expand the range of identifiable lipid biomarkers. This study represents the first micro-contextual approach to archaeological lipid biomarkers and contributes to the advance of archaeological science by adding a new method to obtain behavioral or paleoenvironmental proxies.

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Section: Discussionmentioning

confidence: 99%

Micro-contextual identification of archaeological lipid biomarkers using resin-impregnated sediment slabs

Vera

Herrera‐Herrera

Jambrina‐Enríquez

et al. 2020

Sci Rep

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“…The operation of the centrifugally accelerated horizontal chromatography apparatus has been described in detail (2). The apparatus was operated with an automatic solvent delivery systen/in the present studies.…”

Section: Methodsmentioning

confidence: 99%

Analysis of Polyester Resins by Gas Chromatography.

Percival¹

1963

Anal. Chem.

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Condensation of microliter quantities of alcohols and subsequent reaction with isocyanates gave quantities of urethans which could be detected and identified on paper chromatograms, even when the sample of alcohol was too small or too impure for the determination by infrared analysis. CONCLUSIONSBoth o-nitrophenyl-and p-phenylazophenylurethans give paper chromatographic separation of alcohols of various classes, with the o-nitrophenylurethans giving the best results. In addition, o-nitrophenylisocyanate reacts well with microquantities of alcohols to give enough derivative for paper chromatographic analysis, making this technique an effective supplement to gas liquid chromatography.LITERATURE CITED (

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“…In a previous study (2) numerical values obtained by a particular group of observers for AB, Ah, and Ay were about 0.010, 0.012, and 0.021 cm and the values for Aw were found to depend on the angle a between the peak sides and the scale used to measure width according to the relation Aw = Am(f + cot2 3*a)0•5 (3) with Am equal to 0.008 cm. These four errors occur independently, hence their total effect is obtained by adding them in a statistical sense according to the following generalized…”

mentioning

confidence: 89%

“…The method is applicable to 0.05-to 0.2-gram samples and has a relative error in accuracy of 10%. Similar techniques for identifying carboxylic acids in plasticizers, in polyesters fibers, and in alkyd coating resins have been described (3)(4)(5). In these techniques, isophthalic, terephthalic, adipic, and sebacic acids have been recovered and converted to methyl esters from their products via transesterification with sodium methoxide and separated by gas chromatography.…”

Section: Received For Reviewmentioning

confidence: 99%

Selection of optimum position for measuring widths of chromatographic peaks with minimum error in area

Ball¹,

Harris²,

Habgood³

1968

Anal. Chem.

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Identification of Carboxylic Acids in Alkyd and Polyester Coating Resins by Programmed Temperature Gas Chromatography.

Cited by 44 publications

References 17 publications

Micro-contextual identification of archaeological lipid biomarkers using resin-impregnated sediment slabs

Micro-contextual identification of archaeological lipid biomarkers using resin-impregnated sediment slabs

Analysis of Polyester Resins by Gas Chromatography.

Selection of optimum position for measuring widths of chromatographic peaks with minimum error in area

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