Arsenic (As) is a trace element exist in the environment, and it is one of the commonpoisonous elements in water, excessive intake of arsenic can cause great damage to humanbody. At present, mainly used laboratory detection methods of arsenic such as electrochemicalmethod, ion chromatography, atomic absorption spectroscopy and so on, can detective arsenic,but these techniques have some problems such as low sensitivity, intractable operation andexpensive. Based on the specific molecules of arsenic, we tested a new rapid detectionmethod of arsenic solution, we prepared surface-enhanced Raman enhanced scatteringsubstrate (SERS substrate) to complete the detection of arsenic solution. Through lineardiscriminant analysis, the result show that Raman spectrum has high specificity andsensitivity. The study indicated the feasibility of using SERS substrate to conduct Ramanspectrum detection on arsenic, which was of great significance for the detection of arsenic inaqueous solution.
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