Analytical and Bioanalytical Chemistry

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ISSN / EISSN : 0937-0633 / 1432-1130
Current Publisher: Springer Science and Business Media LLC (10.1007)
Total articles ≅ 33,678
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Christine C. Ghetu, Richard P. Scott, Glenn Wilson, Rachel Liu-May, Kim A. Anderson
Analytical and Bioanalytical Chemistry pp 1-14; doi:10.1007/s00216-020-03127-0

Abstract:
Parent and alkylated polycyclic aromatic hydrocarbons (PAHs) are present in a number of different sources in varying proportions depending on the source material and weathering. This range of PAH sources can make it difficult to determine the origin of exposure(s). Ratios of alkylated and parent PAHs have been applied as a forensic tool to distinguish between different sources. However, few studies have examined PAH ratios comprehensively as indicators for sourcing beyond a single study area or matrix type. In this paper, we introduce an expanded analytical method based on ASTM D7363-13a which we adapted for a gas chromatography triple quadrupole mass spectrometry instrument. The modifications increase selectivity and sensitivity compared to the ASTM method. We added five alkylated series to the method. This method has then been applied to 22 independent forensic ratios. We evaluated the method and the forensic ratios with certified reference materials and known environmental samples. This analytical method and thirteen PAH ratios were found to accurately predict sources of PAHs. Graphical abstract
Lin Zhu, Jiajun Ling, Zhi Zhu, Tian Tian , Yanling Song , Chaoyong Yang
Analytical and Bioanalytical Chemistry pp 1-17; doi:10.1007/s00216-020-03124-3

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Liyang Zhang, Xinyao Yi, Saisai Wang, Peida Liang, Huaxin Zhou, Jia Fu, Qianqian Jia, Jiapan Gao, Yanni Lv, Shengli Han
Analytical and Bioanalytical Chemistry pp 1-11; doi:10.1007/s00216-021-03161-6

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Gábor Tóth, Domonkos Pál, Károly Vékey, László Drahos, Lilla Turiák
Analytical and Bioanalytical Chemistry pp 1-7; doi:10.1007/s00216-021-03152-7

Abstract:
Chondroitin sulfate (CS) is a widely studied class of glycosaminoglycans, responsible for diverse biological functions. Structural analysis of CS is generally based on disaccharide analysis. Sample preparation is a key analytical issue in this case. However, a detailed study on the stability and recovery of CS-derived species has been lacking so far. We have found that for solvent exchange, in general, vacuum evaporation (SpeedVac) is much preferable than lyophilization. Moreover, in the case of aqueous solutions, higher recovery was experienced than in solutions with high organic solvent content. Storage of the resulting disaccharide mixture in typical HPLC injection solvents is also critical; decomposition starts after 12 h at 4 °C; therefore, the mixtures should not be kept in the sample tray of an automatic injector for a long time. The study, therefore, lays down suggestions on proper sample preparation and measurement conditions for biologically derived chondroitin sulfate species.
Lenny Haddad, Sophie Renou, Gérald S. Remaud, Toufic Rizk, Joseph Bejjani, Serge Akoka
Analytical and Bioanalytical Chemistry pp 1-12; doi:10.1007/s00216-020-03135-0

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Gomathi Asaithambi, Viswanathamurthi Periasamy , Haribabu Jebiti
Analytical and Bioanalytical Chemistry pp 1-10; doi:10.1007/s00216-020-03149-8

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Correction
Guilhem Pagés , Catherine Deborde, Martine Lemaire-Chamley, Annick Moing, Jean-Marie Bonny
Analytical and Bioanalytical Chemistry pp 1-1; doi:10.1007/s00216-021-03180-3

Fernando G. M. Violante , Wagner Wollinger, Evelyn F. Guimarães, Bruno C. Garrido, Francisco Radler De Aquino Neto
Analytical and Bioanalytical Chemistry pp 1-14; doi:10.1007/s00216-020-03134-1

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Anneli Kruve , Karin Kiefer, Juliane Hollender
Analytical and Bioanalytical Chemistry pp 1-11; doi:10.1007/s00216-020-03109-2

Abstract:
A wide range of micropollutants can be monitored with non-targeted screening; however, the quantification of the newly discovered compounds is challenging. Transformation products (TPs) are especially problematic because analytical standards are rarely available. Here, we compared three quantification approaches for non-target compounds that do not require the availability of analytical standards. The comparison is based on a unique set of concentration data for 341 compounds, mainly pesticides, pharmaceuticals, and their TPs in 31 groundwater samples from Switzerland. The best accuracy was observed with the predicted ionization efficiency-based quantification, the mean error of concentration prediction for the groundwater samples was a factor of 1.8, and all of the 74 micropollutants detected in the groundwater were quantified with an error less than a factor of 10. The quantification of TPs with the parent compounds had significantly lower accuracy (mean error of a factor of 3.8) and could only be applied to a fraction of the detected compounds, while the mean performance (mean error of a factor of 3.2) of the closest eluting standard approach was similar to the parent compound approach.
Wenxing Li, Xiaomei Yu, Hui Huang
Analytical and Bioanalytical Chemistry pp 1-9; doi:10.1007/s00216-020-03130-5

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