Abstract:Cadmium content in paddy was determined by three rapid methods, including X-ray fluorescence spectrometry, rapid extraction method and anodic stripping voltammetry, and GB/T 5009.15-2003 standard determination method of cadmium, the samples included 58 species of paddy. The result obtained by standard determination method was compared with that by three rapid methods. The qualitative result showed that the accuracy of the three methods reached 79.3%~87.9%. For the testing result which was in the range of 0.16 mg/kg~0.24 mg/kg, its accuracy was between 52.4%~79.2%, otherwise, the accuracy was between 90.5%~94.6%. Whereas, the coincidence rate of quantitative result was 48.3%~65.5%. For the testing result which was lower than or equal to 0.2 mg/kg (≤0.2 mg/kg), its coincidence rate was between 28.6%~85.0%, otherwise, the coincidence rate was between 52.6%~78.3%. Four regression equations were obtained respectively: Y=1.041 5X-0.0131(R2=0.813 8), Y=0.738 3X+0.026 3(R2=0.642 6),Y=0.982 8X+0.034 2(R2=0.821 1)and Y=1.069 7X-0.000 4(R2=0.823 7), with R2 were 0.813 8, 0.642 6, 0.821 1 and 0.823 7, respectively.