A Portable On-site Instrument for Measuring Heavy Metal Contamination in Food

To achieve rapid on-site detection of the heavy metal contaminations in foods, a portable heavy metal continuation instrument has been developed. The instrument is made up of the K60 embedded microcomputers and the corresponding electronic systems. The constant potential measurement method with the anodic stripping voltammetry is used for the measurement. Through the blue-tooth communication module HC-05, the data in the testing module are transmitted to the upper machine: the tablet computer or other types of the Android platform, where the test results be displayed, and can further be transmitted to the cloud service system to realize the food safety supervision and make proper responses in time. The instrument was tested by the standard technical supervision bureau and the results show that this instrument can achieve satisfactory accuracy for the measurement of the heavy metal contamination.