A simple and rapid approach for on-site analysis of nicotine in tobacco based on a screen-printed electrode as an electrochemical sensor

Abstract

In this study, we reported a portable kit consisting of a portable workstation, gold screen-printed electrode (SPE), 0.45 μm filter membrane, phosphate buffer solutions (PBS), and acetic acid (1%) for...

A smart portable electrochemical sensor based on electrodeposited ferrocene-functionalized multiwalled carbon nanotubes for in vitro and in vivo detection of nicotine in tobacco samples

“…10 mL of ethanol and 20 mL of PBS (pH = 7.4) were added and the samples were soaked for 2 h, then the solution was strained and set aside. 21 The detection method was the same as described earlier. Drops of the solution drops were added onto the electrode and DPV was used with a potential of 0–1.5 V and an enrichment time of 50 s. Fig.…”

“…18–20 Portable workstations are easy to operate, have a small instrument size and low cost, and can be combined with screen-printed electrodes for the dynamic determination of substances. 21–23 With efficient signal transmission, they show great potential in the real-time detection of dynamic concentrations. For example, Sha et al realized a portable electrochemical detector for NIC using gold screen-printed electrodes and the test results showed good stability and accurate characterization.…”

“…For example, Sha et al realized a portable electrochemical detector for NIC using gold screen-printed electrodes and the test results showed good stability and accurate characterization. 21 The simple operation of this method and the use of portable equipment provide a new method for the large-scale detection of NIC in real tobacco samples. However, the electrochemical sensors used all had single-emission outputs, which were affected by the detection environment, disturbing their stability and robustness.…”

Electrodeposition of paracetamol oxide for intelligent portable ratiometric detection of nicotine and ethyl vanillin β-d-glucoside

“…It is necessary to prove the practical application value of the intelligent portable ratiometric sensor, and use the standard addition method 46 to detect NIC and EVG in the 'Seven Wolves' cigarettes. It can be seen from Table 2 that the recovery rate is stable in the range 97.55%-103.82%, and the RSD is controlled within 2.65%.…”