建立了微波消解-电感耦合等离子体原子发射光谱法（ICP-AES）测定土壤中锰含量的方法。称取土壤样品0.25 g于微波消解罐中，加入4.0 mL硝酸、5.0 mL氢氟酸、1.0 mL 30%（质量分数，下同）过氧化氢溶液，按微波消解程序进行消解。消解结束后，加入1.0 mL高氯酸进行赶酸，再加入5.0 mL 50%（体积分数）硝酸溶液和4~6滴30%过氧化氢溶液溶解残渣，并用水定容至50 mL，采用ICP-AES进行测定。结果表明：锰的质量浓度在10.0 mg·L^-1以内与其对应的信号强度呈线性关系，检出限（3s）为0.100 mg·kg^-1。对土壤标准物质进行测定，测定值的相对标准偏差（n=6）为1.7%~2.4%，测定值与认定值相符，其相对误差为-0.33%~0.13%。

A method for the determination of manganese in soil by inductively coupled plasma atomic emission spectrometry (ICP-AES) with microwave digestion was established. Soil sample of 0.25 g in a microwave digestion tank was digested with nitric acid of 4.0 mL, hydrofluoric acid of 5.0 mL, 30% (w, the same below) hydrogen peroxide solution of 1.0 mL under the microwave program, and perchloric acid of 1.0 mL was added to remove acid. 50% (φ) nitric acid solution of 5.0 mL and 4-6 drops of 30% hydrogen peroxide solution were used to dissolve the residue. The solution was diluted and made its volume up to 50 mL by water and determined by ICP-AES. As shown by the results, linear relationship between mass concentration of manganese and its signal intensity was kept within 10.0 mg·L^-1, with detection limit (3s) of 0.100 mg·kg^-1. RSDs (n=6) of the determined values of soil standard substances were ranged from 1.7% to 2.4%, and the determined values were consistent with the certified values, with the relative errors in the range of -0.33%-0.13%.