The invention relates to a heavy
metal analysis detection device, particularly relates to a portable trace heavy
metal ion concentration detecting pen, and aims to solve the problem that an existing detecting device is not suitable for field quick detection due to
large size, expensive instrument, high operation cost, complicated detection steps and carrying inconvenience. The detecting pen comprises a hollow penholder, wherein an
electrode assembly, a spring, a button and a stripping
voltammetry-based detection circuit are arranged in the hollow penholder from bottom to top sequentially; the spring sleeves the
electrode body of the
electrode assembly, and the lower end of the spring is clamped on an annular spring bulge on the inner wall of the hollow penholder; the button is formed by an annulus body and a stirring
handle fixed on the outer ring of the annulus body; the annulus body of the button is fixed at the upper end of the electrode body of the electrode
assembly in a sleeving manner; and the stirring
handle of the button extends out of an L-shaped hole in the hollow penholder. The portable trace heavy
metal ion concentration detecting pen is small and portable, is quick and safe to operate, has the
advantage of short detection time, high accuracy and high integrality, and is especially applicable to
field detection.