Simultaneous derivatization and extraction of free cyanide in biological samples with home-made hollow fiber-protected headspace liquid-phase microextraction followed by capillary electrophoresis with UV detection

Electrospray Ionization Mass Spectrometry for the Quantification of Inorganic Cations and Anions

“…The LOD of the present method (20 nmol dm -3 , i.e., 0.5 ppb) is about two orders of magnitude lower than that by ISE and solution spectrophotometry, methods which have been adopted as official methods for CN -(LODs about 1 to several μmol dm -3 ). 45,46 This performance is comparable to that of ESI-MS/MS (LOD, 40 nmol dm -3 ), 44 chemiluminescence (LOD, 0.1 ppb), 47 surface-enhanced Raman spectroscopy (LOD, about 1 ppb), 48 CE (LOD, 10 nmol dm -3 ), 49 gas chromatography with electron capture detector (GC-ECD) (LOD, 0.5 ppb), 50 IC with pulse amperometric detection (IC-PAD) (LOD, 1 ppb), 51 voltammetry (LOD, 14 nmol dm -3 ) 52 and amperometry (LOD, 0.05 to 0.12 ppb). 53 Full details on the performance of the afore-mentioned methods are available.…”

Liquid-phase and dispersive liquid–liquid microextraction techniques with derivatization: Recent applications in bioanalysis

“…Therefore, the importance of a fast and simple method for its extraction and determination in biological samples cannot be overstated. Meng et al [33] used a home-made fiber to develop a HF-LPME method coupled with capillary electrophoresis (CE). In this study, the effect of temperature on the extraction solvent was examined using human urine matrix.…”

“…HF-HS-SDME method by Meng et al [33] was also applied to the extraction of cyanide in salivary fluids. Both smokers' and nonsmokers' saliva were collected.…”

Ninhydrin-based spectrophotometric assays of trace cyanide

“…2 New cyanide detection systems and sample pretreatment procedures for environmental, biological and plant samples have been so far reviewed. [6][7] Numerous reports have been published last years concerning the determination of trace levels of cyanide by spectrophotometry, [8][9][10] voltammetry, [11][12][13] combined colorimetric/fluorimetric [14][15][16] or enzymatic 11,13 sensors, different chromatographic 17,18 and electrophoretic 19,20 techniques.…”