Feasibility of Immunochromatography Technique for Measuring Cadmium Concentration in Rice Grain.

Concerning about crop safety has been increased recently because of human health aspect. Especially, bioaccumulated heavy metals in crops can cause detrimental effect not only on crop growth but human health. The main objective of this research was to apply immunochromatograpy(IC) that use antigen-antibody techniques for quantifying Cd in rice grain. Cadmium in rice grain was extracted with 0.1N HCl and quantified with IC techniques. In addition, correlation analysis for Cd concentration was conducted between IC and ICP (Induced Coupled Plasma) measurement. Average Cd concentration in rice grain was 0.46-2.39 mg kg^-1 and 0.52-1.97 mg kg^-1 for IC and ICP measurement respectively. The result of correlation also showed the statistically significant correlation between two measurement techniques(r²=0.98). This result clearly showed that IC technique can be applied to quantify the heavy metal concentration in crops and further research is necessary to apply IC technique for other matrixes.