DESCRIPTION

FEATURES

• Replaceable smart chip to auto-switch to different analyte mode
• Calibration curve built in smart chip (calibration-free for user )
• One-touch to analyze with no other complicated setting steps
• Using M series sensor to achieve one drop analysis without reagents and pretreatment
• Synchronized display of voltammetric graph and digital reading
• Store up to 100 measuring result for each analyte and able to be saved as excel form.

ELECTROCHEMISTRY KNOWLEDGE BRIEF SHARING

The field of electrochemical analysis was initiated by Czech chemist Jaroslav Heyrovsky in 1920 with the development of polarography. By the mid-1960s, significant advancements in classical voltammetry laid the foundation for the widespread and continued use of electrochemical analysis systems. The three-electrode system (comprising a working electrode, a reference electrode, and an auxiliary electrode) is crucial for implementing electrochemical detection methods, with the working electrode holding particular importance. Various types of working electrodes have evolved over time, starting from the early use of the Dropping Mercury Electrode (DME) in polarography, to rotating disk electrodes for studying the kinetics of different analytes, and the development of diverse materials (such as gold, platinum, carbon, and silver) and electrode types (including microelectrodes and ring-disk electrodes), each designed to better suit the experimental and research needs.

While electrochemical analysis techniques may not allow for the simultaneous determination of multiple heavy metals in a single sample, advancements in precision engineering have led to the miniaturization of analysis devices to handheld sizes. These devices offer the advantage of being potentially developed into on-site detection tools due to their ease of operation and affordability [1,2]. Commonly used electrochemical methods for metal detection include Cyclic Voltammetry (CV), Linear Sweep Voltammetry (LSV), Square Wave Voltammetry (SWV), and Differential Pulse Voltammetry (DPV). LSV, SWV, and DPV are often combined with the Anodic Stripping Method (ASV) to enhance analytical sensitivity, abbreviated as ASV (Anodic Stripping Voltammetry), SWSV (Square-Wave Stripping Voltammetry), and DPSV (Differential Pulse Stripping Voltammetry), respectively.

References:
[1] D. wand, Y.Z. Zhao, H. Jin, J. Zhuang, W. Zhang, S. Wang, J. Wang, Synthesis of Au-Decorated Tripod-Shaped Te Hybrids for Applications in the Ultrasensitive Detection of Arsenic. ACS Applied Material Interfaces, 5 (2013) 5733.
[2] A. Cavicchioli, M.A. La-Scalea, I.G.R. Gutz, Analysis and Speciation of Traces of Arsenic in Environmental, Food and Industrial Samples by Voltammetry: a Review, Electroanalysis 16 (2004) 697.

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