Electronic tongue for simultaneous determination of cyanide, thiocyanate and iodide

Intelligent security systems have evolved enormously in the last few years. Most of these security systems use a group of physics sensors and algorithms for data analysis and communication systems to notify security alarms. Many security systems that are included in doors can detect intruders when they have already opened the door, but not while intruders are forcing upon the door. However, some security systems include preventive systems, which can detect intruders before they open the door. These preventive systems are usually based on video cameras (image processing) or in‐presence sensors, which can generate many false positives, for instance, when a person is next to the door for a few seconds, even if this person is not manipulating the door. This research work proposes a novel force door detection system. The system includes a specific device for monitoring door small vibrations and movements; it analyzes these data using neural networks to detect accurately if someone is forcing upon the door. Artificial intelligence must be able to categorize data records without confusing when someone is forcing upon the door with other actions, like knocking on the door.

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“…Smell is not the only sense that researchers are trying to replicate. There are also many works which aim to create an electronic tongue …”

Section: Related Workmentioning

confidence: 99%

“…There are also many works which aim to create an electronic tongue. 20 Other research works combine sensor data and artificial intelligence to improve the detection of the gas release rate. To that end, So et al 21 collected data using optical sensors.…”

Section: Related Workmentioning

confidence: 99%

Real‐time force doors detection system using distributed sensors and neural networks

et al. 2019

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“…As an alternative, the potentiometric method applying ion-selective electrodes (ISEs) has been proposed. The majority of thiocyanate selective ionophores presented in the literature are based on porphyrins [32][33][34][35][36][37] and phthalocyanines [38][39][40]. Some other macrocyclic compounds such as aza-macrocycles [41][42][43], crown ethers [44] or calix [4]arenes [45] were also reported.…”

Section: Introductionmentioning

confidence: 99%

Potentiometric Solid-Contact Ion-Selective Electrode for Determination of Thiocyanate in Human Saliva

Urbanowicz

Sadowska

Pijanowska

et al. 2020

Sensors

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A new solid-contact potentiometric ion-selective electrode for the determination of SCN− (SCN-ISE) has been described. Synthesized phosphonium derivative of calix[4]arene was used as a charged ionophore. The research included selection of the ion-selective membrane composition, determination of the ISEs metrological parameters and SCN-ISE application for thiocyanate determination in human saliva. Preparation of the ISEs included selection of a plasticizer for the ion-selective membrane composition and type of the electrode material. The study was carried out using ISE with liquid internal electrolyte (LE-ISE) and solid-contact electrodes made of glassy carbon (GC-ISE) and gold rods (Au-ISE). The best parameters were found for GC sensors for which the ion-selective membrane contained chloroparaffin as a plasticizer (S = 59.9 mV/dec, LOD = 1.6 × 10−6 M). The study of potentiometric selectivity coefficients has shown that the thiocyanate-selective sensor could be applied in biomedical research for determination of SCN− concentration in human saliva. The accuracy of the SCN− determination was verified by testing 59 samples of volunteers’ saliva by potentiometric sensors and UV-Vis spectrophotometry as a reference technique. Moreover, SCN− concentrations in the smokers’ and non-smokers’ saliva were compared. In order to investigate the influence of various factors (sex, health status, taken medications) on the thiocyanate level in the saliva, more extensive studies on a group of 100 volunteers were carried out. Additionally, for a group of 18 volunteers, individual profiles of SCN− concentration in saliva measured on a daily basis for over a month were collected.

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“…There have been various instrumental techniques including ion selective electrodes (ISEs) , chromatography , spectrometry and surface‐enhanced Raman scattering for thiocyanate detection. Compared with these instrumental methods, voltammetric analysis offering the advantages of faster detection and easier electrode fabrication has been developed for thiocyanate detection .…”

Section: Introductionmentioning

confidence: 99%

Voltammetric Behaviors and Determination of Thiocyanate on Multiwalled Carbon Nanotubes‐Cetyltrimethylammonium Bromide Modified Electrode

Xie

Zhang

2018

Electroanalysis

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Electrochemical behaviors of thiocyanate on three carbon nanotubes (CNTs) composites modified glass carbon electrode (GCE) were studied. The modified electrodes were prepared with CNTs suspended in aqueous solutions of chitosan (CHT), poly(diallyldimethylammonium chloride) (PDDA) and cetyltrimethylammonium bromide (CTAB), respectively. The results indicated that CNTs‐CTAB enhanced the voltammetric response of thiocyanate more remarkably than other two CNTs composites. Then, the voltammetric behaviors of thiocyanate on CNTs‐CTAB/GCE were investigated systematically to develop an electrochemical sensor for thiocyanate determination. The solution pH, supporting electrolyte, amount of CNTs‐CTAB suspension, and accumulation time were optimized. Under optimum conditions, the anodic peak current on CNTs‐CTAB/GCE increased linearly with increasing the thiocyanate concentration from 5.0×10−6 to 1.0×10−4 mol L−1. The proposed CNTs‐CTAB/GCE was demonstrated to provide a fast and low‐cost approach to monitoring the adsorptive removal of thiocyanate with layered double hydrotalcite (LDH).

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Electronic tongue for simultaneous determination of cyanide, thiocyanate and iodide

Cited by 12 publications

References 22 publications

Real‐time force doors detection system using distributed sensors and neural networks

Real‐time force doors detection system using distributed sensors and neural networks

Potentiometric Solid-Contact Ion-Selective Electrode for Determination of Thiocyanate in Human Saliva

Voltammetric Behaviors and Determination of Thiocyanate on Multiwalled Carbon Nanotubes‐Cetyltrimethylammonium Bromide Modified Electrode

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