Simple and fast determination of free cyanide in drinking water by liquid chromatography electrospray ionization tandem mass spectrometry following “in vial” derivatization

Rapid and simple identification of trace amounts of sodium azide in beverages and bodily fluids followed by derivatization and liquid chromatography–electrospray ionization tandem mass spectrometry

“…We utilized a chromatographic method based on acidic eluents that we recently developed for cyanide derivatives (CAX‐CN) except for acetonitrile which was replaced by methanol 32 . Proper retention time (Rt) and peak shape (peak height and width) were observed for the CAX‐N 3 derivative.…”

“…The goal of the research presented here was to develop a simple and rapid procedure for the highly sensitive identification of azides in several drinks and biological samples (plasma and urine) using derivatization reactions and LC/ESI‐MS/MS analysis. We studied the use of N ‐(2‐(bromomethyl)benzyl)‐ N , N ‐diethylethanaminium bromide (CAX‐B), which demonstrated high derivatization efficiency for phenols 31 and cyanides 32 …”

“…We studied the use of N-(2-(bromomethyl)benzyl)-N,N-diethylethanaminium bromide (CAX-B), which demonstrated high derivatization efficiency for phenols 31 and cyanides. 32 Tea was prepared by steeping a teabag in approximately 100 mL of hot drinking water for 10 min, then cooled to room temperature.…”

A novel turn-on fluorescent sensor for cyanide ions based on the charge transfer transition of phenothiazine/indolium compounds

“…3 Therefore, CN − detection is extremely important to determine the cause of death in homicides and fires. Thus, many instrumental analytical methods such as gas chromatography, mass spectrometry, liquid chromatography, and ion chromatography have been applied for the detection of CN − ; [4][5][6][7][8][9][10][11][12][13][14][15] however, these methods require expensive equipment, advanced facilities, and excellent operation skills. Hence, several chemical sensors, including colorimetric sensors and fluorescence sensors that selectively react with CN − , have been recently developed for the rapid detection of CN − in the field.…”

A Fuzzy MADM Approach for Selecting the Best Cyanide Removal Method from a Gold Mine Wastewater

“…It is accepted that cyanide, in some forms (hydrogen cyanide, sodium cyanide, and potassium cyanide), is a very powerful and fast acting toxin (Dash et al, 2009;Kuyucak and Akcil, 2013;Chu et al, 2020;Cope, 2020). The permissible limit for cyanide is less than 0.2 mg L -1 for surface discharge (Dzombak et al, 2005;Mondal et al, 2019;Madmon et al, 2021;Das et al, 2021). It is noticeable that under certain alkaline conditions, cyanide may persist for at least a century in groundwater, mine tailings, and abandoned leach heaps (Ware, 2004;Eisler, 2007).…”