A Comparative Study of Invasive and Micro-Invasive Analytical Methods for the Detection and Identification of Historically Applied Pesticides to Archival Records in Studies in conservation, Vol.70 N°7-8(2025; October-November) (2025-10-01)

Public ISBD [article]  inStudies in conservation > Vol.70 N°7-8(2025; October-November) (2025-10-01) . - P. 647-658 Titre : A Comparative Study of Invasive and Micro-Invasive Analytical Methods for the Detection and Identification of Historically Applied Pesticides to Archival Records Type de document : texte imprimé Année de publication : 2025 Article en page(s) : P. 647-658 Langues : Anglais (eng) Catégories : Archives -- Conservation et restauration -- Canada Archives -- Conservation et restauration -- Grande-Bretagne Chromatographie en phase gazeuse Conservation et restauration -- Échantillonnage Conservation et restauration -- Méthode comparative Pesticides -- Identification Pesticides -- Recherches Spectrométrie de masse Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : The National Archives UK has previously carried out invasive sampling and analysis on records in its collections which were found to contain various organochlorine pesticide (OCP) residues on all tested items regardless of format or period of creation. This study presented a rare opportunity to carry out comparative research of invasive and swab sampling methods on original, historic materials for the detection and identification of hazardous substances. Swabbing was carried out on the same records that had been invasively sampled to determine the sensitivity and applicability of this method relative to invasive sampling as well as the likelihood of pesticide transfer during handling of the records. Analysis by gas chromatography -mass spectrometry (GC-MS) demonstrated that the presence of a number of pesticides could effectively be identified using a dry swabbing method, including pentachlorophenol, ortho-phenylphenol, and the breakdown products of DDT and methoxychlor. The pesticides identified in invasive and swab testing from the same book were sometimes different, highlighting that the method of sampling will affect the results. Our results from this case study provide a snapshot, comparing the concentrations of hazardous organic pesticides detected in the invasive tests versus those found in swabs, and compare these quantities to human health-based screening concentrations. We argue that a dry swabbing programme is a good option in archival settings for screening for a comprehensive suite of pesticides, complementing existing occupational health approaches that take into account a whole collection, and can provide information to facilitate access and handling of historical records. [article] A Comparative Study of Invasive and Micro-Invasive Analytical Methods for the Detection and Identification of Historically Applied Pesticides to Archival Records [texte imprimé] . - 2025 . - P. 647-658. Langues : Anglais (eng) in Studies in conservation > Vol.70 N°7-8(2025; October-November) (2025-10-01) . - P. 647-658 Catégories : Archives -- Conservation et restauration -- Canada Archives -- Conservation et restauration -- Grande-Bretagne Chromatographie en phase gazeuse Conservation et restauration -- Échantillonnage Conservation et restauration -- Méthode comparative Pesticides -- Identification Pesticides -- Recherches Spectrométrie de masse Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : The National Archives UK has previously carried out invasive sampling and analysis on records in its collections which were found to contain various organochlorine pesticide (OCP) residues on all tested items regardless of format or period of creation. This study presented a rare opportunity to carry out comparative research of invasive and swab sampling methods on original, historic materials for the detection and identification of hazardous substances. Swabbing was carried out on the same records that had been invasively sampled to determine the sensitivity and applicability of this method relative to invasive sampling as well as the likelihood of pesticide transfer during handling of the records. Analysis by gas chromatography -mass spectrometry (GC-MS) demonstrated that the presence of a number of pesticides could effectively be identified using a dry swabbing method, including pentachlorophenol, ortho-phenylphenol, and the breakdown products of DDT and methoxychlor. The pesticides identified in invasive and swab testing from the same book were sometimes different, highlighting that the method of sampling will affect the results. Our results from this case study provide a snapshot, comparing the concentrations of hazardous organic pesticides detected in the invasive tests versus those found in swabs, and compare these quantities to human health-based screening concentrations. We argue that a dry swabbing programme is a good option in archival settings for screening for a comprehensive suite of pesticides, complementing existing occupational health approaches that take into account a whole collection, and can provide information to facilitate access and handling of historical records.

Phenotypic Trait of Painting Cracks in Studies in conservation, Vol.70 N°5-6(2025; July-August) (2025-07-01)  

Public ISBD [article]  inStudies in conservation > Vol.70 N°5-6(2025; July-August) (2025-07-01) . - P. 530-545 Titre : Phenotypic Trait of Painting Cracks Type de document : texte imprimé Année de publication : 2025 Article en page(s) : P. 530-545 Langues : Anglais (eng) Catégories : Art -- Authentification Conservation et restauration -- Méthode comparative Fracturation (géologie) -- Méthode comparative Matériaux -- Fissuration -- Analyse Peinture sur toile -- Détérioration -- Recherche Peinture sur toile -- Provenance -- Analyse Similitude (physique) Mots-clés : Loi de puissance Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : ABSTRACT A painting, like human skin, develops cracks on the surface as it dries and ages. The painting cracks, also known as craquelure, are often considered analogous to human fingerprints; these have been regarded as a unique signature reflective of the painting’s characteristics and are important in art authentication. Intriguingly, studies in other fields, such as geology, have observed the presence of distinctive characteristics in soil desiccation cracks. These cracks exhibit self-similarity, forming patterns that suggest broader geological processes at work. In light of this connection, the primary objective of this study is to investigate whether the painting cracks also exhibit a self-similar nature. By delving into this, we seek to shed light on the underlying properties of the painting cracks. This study also aims to investigate whether the characteristic self-similar trait of the cracks can serve as an identifier in relation to the provenances of the paintings. To this end, this study adopts the methodology originally designed to characterize the phenotypic traits of 3D particle geometries in granular materials research. This study develops a 2D equivalent concept, focusing on the phenotypic traits of the individual islands enclosed by cracks within paintings. The results successfully demonstrate that the phenotypic trait of painting cracks exhibits a self-similar nature, which can reveal characteristics associated with the provenances of paintings. The findings will offer valuable insights into the scientific examination of artworks based on painting cracks. En ligne : https://www.tandfonline.com/doi/full/10.1080/00393630.2024.2420574 [article] Phenotypic Trait of Painting Cracks [texte imprimé] . - 2025 . - P. 530-545. Langues : Anglais (eng) in Studies in conservation > Vol.70 N°5-6(2025; July-August) (2025-07-01) . - P. 530-545 Catégories : Art -- Authentification Conservation et restauration -- Méthode comparative Fracturation (géologie) -- Méthode comparative Matériaux -- Fissuration -- Analyse Peinture sur toile -- Détérioration -- Recherche Peinture sur toile -- Provenance -- Analyse Similitude (physique) Mots-clés : Loi de puissance Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : ABSTRACT A painting, like human skin, develops cracks on the surface as it dries and ages. The painting cracks, also known as craquelure, are often considered analogous to human fingerprints; these have been regarded as a unique signature reflective of the painting’s characteristics and are important in art authentication. Intriguingly, studies in other fields, such as geology, have observed the presence of distinctive characteristics in soil desiccation cracks. These cracks exhibit self-similarity, forming patterns that suggest broader geological processes at work. In light of this connection, the primary objective of this study is to investigate whether the painting cracks also exhibit a self-similar nature. By delving into this, we seek to shed light on the underlying properties of the painting cracks. This study also aims to investigate whether the characteristic self-similar trait of the cracks can serve as an identifier in relation to the provenances of the paintings. To this end, this study adopts the methodology originally designed to characterize the phenotypic traits of 3D particle geometries in granular materials research. This study develops a 2D equivalent concept, focusing on the phenotypic traits of the individual islands enclosed by cracks within paintings. The results successfully demonstrate that the phenotypic trait of painting cracks exhibits a self-similar nature, which can reveal characteristics associated with the provenances of paintings. The findings will offer valuable insights into the scientific examination of artworks based on painting cracks. En ligne : https://www.tandfonline.com/doi/full/10.1080/00393630.2024.2420574

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