Archives: Peer-Reviewed Studies

Health risks posed to infants in rural China by exposure to short- and medium-chain chlorinated paraffins in breast milk

Authors: Dan Xia, Li-Rong Gao, Ming-Hui Zheng, Jing-Guang Li, Lei Zhang, Yong-Ning Wu, Lin Qiao, Qi-Chang Tian, Hui-Ting Huang, Wen-Bin Liu, Gui-Jin Su, Guo-Rui Liu Abstract Chlorinated paraffins (CPs) are complex mixtures of synthetic chemicals found widely in environmental matrices. Short-chain CPs (SCCPs) are candidate persistent organic pollutants under the Stockholm Convention. There should be great …

Health risks posed to infants in rural China by exposure to short- and medium-chain chlorinated paraffins in breast milk Read More »

Update of on-line coupled liquid chromatography – gas chromatography for the analysis of mineral oil hydrocarbons in foods and cosmetics

Authors: Maurus Biedermann, Celine Munoz, Koni Grob Abstract On-line coupled high performance liquid chromatography-gas chromatography-flame ionization detection (HPLC-GC-FID) is the most widely used method for the analysis of mineral oil hydrocarbons in food, food contact materials, tissues and cosmetics. With comprehensive two-dimensional gas chromatography (GCxGC), a tool became available for better establishing the elution sequence …

Update of on-line coupled liquid chromatography – gas chromatography for the analysis of mineral oil hydrocarbons in foods and cosmetics Read More »

Effects of pan cooking on micropollutants in meat

Authors: Christelle Planche, Jérémy Ratel, Patrick Blinet, Frédéric Mercier, Magaly Angénieux, Claude Chafey, Julie Zinck, Nathalie Marchond, Sylvie Chevolleau, Philippe Marchand, Gaud Dervilly-Pinel, Thierry Guérin, Laurent Debrauwer, Erwan Engel Abstract This work presents the effects of pan cooking on PCBs, PCDD/Fs, pesticides and trace elements in meat from a risk assessment perspective. Three different realistic …

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Characterization of the reactivity and chlorinated products of carbazole during aqueous chlorination

Authors: Xiong Xu, Donghong Wang, Chunmei Li, Hongru Feng, Zijian Wang Abstract Carbazole in source water is a potential precursor for toxic chlorocarbazoles in drinking water when chlorine is used as a disinfection agent in drinking water treatment plants. However, the reactivity of carbazole and the specific structures and predominant analogues of chlorocarbazoles produced during aqueous chlorination remain unknown. In …

Characterization of the reactivity and chlorinated products of carbazole during aqueous chlorination Read More »

Formation of known and unknown disinfection by-products from natural organic matter fractions during chlorination, chloramination, and ozonation

Authors: Chunmei Li, Donghong Wang Xiong Xu, Zijian Wang Abstract Natural organic matter (NOM) is the main precursor of disinfection by-products (DBPs) formed during drinking water treatment processes. Previous studies of the relationships between DBP formation and NOM fractionation have mainly been focused on currently regulated DBPs and a few certain emerging DBPs. In this work, the …

Formation of known and unknown disinfection by-products from natural organic matter fractions during chlorination, chloramination, and ozonation Read More »

Unveiling elderflowers (Sambucus nigra L.) volatile terpenic and norisoprenoids profile: Effects of different postharvest conditions

Authors: Ângelo C. Salvador, Armando J.D. Silvestre, Sílvia M.Rocha Abstract The volatile terpenic and norisoprenoids profile from elderflowers (Sambucus nigra L.) was established for two cultivars by multidimensional gas chromatography. From 47 monoterpenic, 13 sesquiterpenes and 5 norisoprenoids components, 38 are reported for the first time on elderflowers. Elderflower seasonality implies proper handling and storage conditions, for further processing, thus the …

Unveiling elderflowers (Sambucus nigra L.) volatile terpenic and norisoprenoids profile: Effects of different postharvest conditions Read More »

Mineral oil saturated hydrocarbons (MOSH) in female Fischer 344 rats; accumulation of wax components; implications for risk assessment

Authors: Laura Barp, Maurus Biedermann, Koni Grob, Florence Blas-Y-Estrada, Unni C Nygaard, Jan Alexander, Jean-Pierre Cravedi Abstract Female Fischer 344 rats were exposed to three MOSH mixtures: oils largely below and above C25 (S-C25 and L-C25) and a 1:1 mixture of L-C25 with a wax; doses of 400, 1000 and 4000 mg/kg feed were administered during 120 days. …

Mineral oil saturated hydrocarbons (MOSH) in female Fischer 344 rats; accumulation of wax components; implications for risk assessment Read More »

Elucidation of the aroma compositions of Zhenjiang aromatic vinegar using comprehensive two dimensional gas chromatography coupled to time-of-flight mass spectrometry and gas chromatography-olfactometry

Authors: Zhilei Zhou, Shuangping Liu, Xiangwei Kong, Zhongwei Ji, Xiao Han, Jianfeng Wu, Jian Mao Abstract In this work, a method to characterize the aroma compounds of Zhenjiang aromatic vinegar (ZAV) was developed using comprehensive two dimensional gas chromatography (GC × GC) coupled with time-of-flight mass spectrometry (TOFMS) and gas chromatography olfactometry (GC-O). The column combination was …

Elucidation of the aroma compositions of Zhenjiang aromatic vinegar using comprehensive two dimensional gas chromatography coupled to time-of-flight mass spectrometry and gas chromatography-olfactometry Read More »

A new and efficient Solid Phase Microextraction approach for analysis of high fat content food samples using a matrix-compatible coating

Authors: Selenia De Grazia, Emanuela Gionfriddo, Janusz Pawliszyn Abstract The current work presents the optimization of a protocol enabling direct extraction of avocado samples by a new Solid Phase Microextraction matrix compatible coating. In order to further extend the coating life time, pre-desorption and post-desorption washing steps were optimized for solvent type, time, and degree of agitation …

A new and efficient Solid Phase Microextraction approach for analysis of high fat content food samples using a matrix-compatible coating Read More »

Black tea volatiles fingerprinting by comprehensive two-dimensional gas chromatography – Mass spectrometry combined with high concentration capacity sample preparation techniques: Toward a fully automated sensomic assessment

Authors: Federico Magagna, Chiara Cordero, Cecilia Cagliero, Erica Liberto, Patrizia Rubiolo, Barbara Sgorbini, Carlo Bicchi Abstract Tea prepared by infusion of dried leaves of Camellia sinensis (L.) Kuntze, is the second world’s most popular beverage, after water. Its consumption is associated with its chemical composition: it influences its sensory and nutritional quality addressing consumer preferences, and potential …

Black tea volatiles fingerprinting by comprehensive two-dimensional gas chromatography – Mass spectrometry combined with high concentration capacity sample preparation techniques: Toward a fully automated sensomic assessment Read More »