Integrated screen-printed electrode detection handle with stirring function

Abstract

The invention discloses an integrated screen-printed electrode detection handle with a stirring function. The detection handle integrates a screen-printed electrode, an external platinum-pair electrode, an external Ag / AgCl reference electrode, a stirring part and a testing cavity, wherein the stirring part is arranged among the screen-printed electrode, the external platinum-pair electrode and the external Ag / AgCl reference electrode; the stirring part comprises a miniature direct-current motor, a fixed bearing, a stirring rod and a connecting silicone tube; and the testing cavity is in threaded connection with a bottom cover of the handle. The integrated screen-printed electrode detection handle is connected with a portable heavy-metal detector or an electrochemical working station and the like to form a detection system, can be used for fast detection of heavy metals in water environment, has the characteristics that the structure is compact, the layout is reasonable, the installation is convenient, the replacement of the screen-printed electrode is convenient, the liquid addition is convenient and the detection sensitivity is effectively improved and the like, meets the portable need for detection of the heavy metal in the water environment, and has large application prospect.

Description

technical field [0001] The invention relates to the field of electrochemical sensors, in particular to an integrated screen printing electrode detection handle with a stirring function that can be used for rapid detection of heavy metals in water environments. Background technique [0002] At present, the scope of human activities is expanding day by day, and various industrial, agricultural and domestic wastes are discharged into rivers, lakes and oceans; this inevitably causes heavy metal pollution in the water environment, and has begun to threaten the human living environment. Heavy metal elements have the characteristics of high toxicity, difficult metabolism, easy bio-accumulation and biomagnification effect, which seriously endanger the ecological environment and human health. There is an urgent need for on-site rapid detection of heavy metals in water environment. [0003] Although the commonly used spectrophotometry, spectroscopy, and mass spectrometry are important...

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Problems solved by technology

[0005] The three-electrode system in the original system is a separate structure, and the connection with the instrument is clamped. The structure is loose, the contact impedance is unstable, and the position between the electrodes is relatively unstable, which may easily cause changes in the impedance properties between the electrodes, resulting in detection errors.

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