Hot-water and solid-phase extraction of fluorescent whitening agents in paper materials and infant clothes followed by unequivocal determination with ion-pair chromatography-tandem mass spectrometry

Method for analysis of 68 organic contaminants in food contact paper using gas and liquid chromatography coupled with tandem mass spectrometry

“…coatings, adhesives, printing inks and rubber, as an important source of chemical contamination of food. Recent articles have reported occurrence of phthalates (Bononi & Tateo, 2009;Zhang, Noonan, & Begley, 2008), bisphenols (P erez-Palacios, Fern andez-Recio, Moreta, & Tena, 2012), ink photoinitiators (Bugey, Janin, Edder, & Bieri, 2013;Koivikko et al, 2010), fluorescent whitening agents (Chen & Ding, 2006), polyfluorinated compounds (PFC) (Begley et al, 2005;Poothong, Boontanon, & Boontanon, 2012;Trier, Granby, & Christensen, 2011) and biocides (Domeño, Munizza, & Nerín, 2005; Votavov a, Hanu sov a, V apenka, Dobi a s, & Kvasni cka, 2014). Furthermore, EFSA (2012) believes that recycled paper and board represent an important source of mineral oil hydrocarbons (MOH) including both saturated and aromatic fractions (MOSH and MOAH, respectively).…”

Chemometrics-assisted excitation–emission fluorescence analytical data for rapid and selective determination of optical brighteners in the presence of uncalibrated interferences

“…20 However, ion suppression is one of the most undesirable problems affecting these techniques during quantification and a separation step was needed to remove the possible matrix effect. 21 Furthermore, the expenses of LC/MS systems are high, operation system is laborious and unavailable in many commercial laboratories. Simultaneous determination of detergent ingredients was carried out by combining spectroscopy method with chemometric techniques such as partial least square (PLS) 22,23 Analysis of complex matrices into their pure-component contributions with unknown components without separation is a fundamental problem in analytical chemistry.…”

Study of adsorption kinetics for fluorescent whitening agent on fiber surfaces

“…In European paper standard testing method, the hot water extraction is designated as a procedure to remove FWA from paper fibers [10] . Recently, Chen and Ding [11] have examined stilbene derivatives FWA in several kinds of paper and textile materials using the hot water extraction. Physical adsorption is also a very rapid process, which has been observed in the FWA adsorption on the fibers in the present work.…”