Development of ultrasound-assisted emulsification microextraction for determination of thiocynate ion in human urine and saliva samples

A two-in-one device for online monitoring of direct immersion single-drop microextraction: an optical probe as both microdrop holder and measuring cell

“…Therefore, the developed method is more environmentally friendly and cheaper. Moreover, phase separation 28,42,43 and transfer of the extraction phase to a microvolume cell are excluded. As a consequence, the method can be considered as simpler and less time consuming.…”

“…For the rst time, an optical probe is proposed as the holder of the extraction drop and the measuring cell in a direct immersion single-drop microextraction. In the proposed DI-SDME scheme the necessity of transferring the extraction phase to a microcuvette 28,42 or the pedestal of a cuvetteless spectrophotometer as well as dispensing to a ow cell 28,43 for absorbance measurement is eliminated. This makes the analysis simpler and less time-consuming and allows the absorbance to be recorded online.…”

Rapid and reproducible analysis of thiocyanate in real human serum and saliva using a droplet SERS-microfluidic chip

“…Up to now, the detection of SCN À has been carried out using techniques including gas chromatography-mass spectrometry (Bhandari et al, 2012;Youso et al, 2010), high-performance liquid chromatography (Bhandari et al, 2014), ion chromatography (Chinaka et al, 1998;Niemann and Anderson, 2008), capillary electrophoresis (Xu et al, 2008), ion-selective electrode (Arvand et al, 2007;Singh and Singh, 2011) and spectrophotometry (Hashemi et al, 2013;Zhang et al, 2011). As reviewed by Logue et al (2010), some of these methods have difficulties in improving the reproducibility while others have the problem of poor selectivity; still some others need the time-consuming complex separation process.…”

Visualizing Smoking Hazard: A Simple Spectrophotometric Determination of Hydrogen Cyanide in Cigarette Smoke and Filters

“…Cyanide in blood is either loose in plasma or bound to ferric hemoglobin. Some of the cyanide is naturally converted to thiocyanate and is subsequently excreted through urine …”

“…Some of the cyanide is naturally converted to thiocyanate and is subsequently excreted through urine. 7 The extreme toxicity of cyanide compounds continues to elicit intensive research on selective and sensitive methods for cyanide detection. 1,8 Hydrogen cyanide in cigarette smoke was determined using capillary gas chromatography coupled with a microelectron capture detector 9 or ion chromatography with pulsed amperometric detection.…”