Germany) was used not only as the solid sampling method but also to determine cd in samples after digestion for the purpose of validating the results of the solid sampling ETV-lCP- MS (SS-ETV-ICP-MS) system. The detailed operating parameters of the CP-MS were as follows: incident RF power: 1350 W, cooling argon gas flow rate: 13.0 L/min, nebulizer argon gas flow rate: 0.85 L/min, and auxiliary argon gas flow rate: 0.80 LAmin. The sampling tube was 147-mm long with an inside diameter of 0.02 mm, and the peristaltic pump rate was 30 rpm. The ion count was monitored at m/z 111. and the LOD of Cd was 0.1 ug/kg for the microwave digestion analytical method. The solid sampling programs for this ETV-ICP-MS instrument, including ashing, vaporization, and releasing procedures, are listed in