Surface-Enhanced Raman Spectroscopy for Highly Sensitive Detection of Methyl Parathion

Methyl Parathion (MP) is a common organophosphorus pesticide, which may pollute the environment. A sensitive method was explored for quantification of MP in water samples as surface-enhanced Raman spectroscopy (SERS) substrate by using silver nanorod (AgNR) array substrates. The AgNR array substrates were fabricated by oblique angle deposition technique(OAD), which exhibited an excellent SERS activity. A good linear relationship was exhibited between the intensity of characteristic peak and MP concentration in the range of 3 ~ 50 mg/L, and a limit of detection was determined to be 3 mg/L. This method based SERS was a rapid and highly ultrasensitive detection of PM without any sample pretreatment, and has the eormous potential application in water quality monitoring.