Quantitative determination of benzalkonium chloride in treated wood by solid-phase extraction followed by liquid chromatography with ultraviolet detection

Determination of five quaternary ammonium compounds in foodstuffs using high performance liquid chromatography-tandem mass spectrometry

“…BAC can be determined using liquid chromatograph (LC) with UV detection in aerosol preparations 22 and treated wood. 23 Capillary electrophoresis (CE) is also an efficient separation method for ionic surfactants.…”

Improved quantitative determination of benzalkonium chloride in treated wood by liquid chromatography

“…For a wood density of 0.35 g cm -3 and a C12/C14 homologue ratio in ACQ products of approximately 3:1 (w/w) (Miyauchi et al 2005), these BAC levels include the regulation retention levels published in Japanese Agricultural Standard (2002) and HOWTEC (2002). Equal amounts of C12 and C14 homologues dissolved in MeOH were added to the wood powder (in triplicate, 500 mg each); this mixture was then dried at 508C for 48 h. The resulting spiked wood powder contained 10, 1, and 0.1 mg g -1 of each homologue.…”

“…In Japan, alternative copper-based preservatives composed of a combination of copper and organic biocides are now mainly used for wood preservation (Tsunoda 2001; Ishida et al 2004). BACs in commercial ACQ products comprise mainly benzyldimethyldodecyl ammonium chloride (C12 homologue) and benzyldimethyltetradecyl ammonium chloride (C14 homologue) (Miyauchi et al 2005). They contain a combination of copper and quaternary ammonium compounds (QAC) such as benzalkonium chloride (BAC), which is an important additive (Japanese industrial standard 2004 JIS K 1570; AWPA 2006a standard P5-06).…”

“…This involved solid-phase extraction (SPE) using a strong cation exchanger (Oasis MCX) for sample clean-up, followed by LC-UV analysis (Miyauchi et al 2005). This involved solid-phase extraction (SPE) using a strong cation exchanger (Oasis MCX) for sample clean-up, followed by LC-UV analysis (Miyauchi et al 2005).…”

Simultaneous Determination of Anionic, Amphoteric and Cationic Surfactants Mixtures in Surface Water

“…Reverse phase column RP-18 [12,18,19] and RP-8 [11,20] are used for chromatographic separation of anionic, nonionic, cationic surfactants and their degradation products. Surfactant classes which have chromophore groups are determined by HPLC coupled to ultraviolet (UV) [21,22] or fluorescence detectors [23,24]. Because many surfactants have low or no chromophore, universal detector, such as Charged Aerosol Detector (CAD) and evaporative light scattering detector (ELSD) [3,25], are often used.…”