Using microwave plasma torch(MPT)as excitation light source,argon as support gas,the sample solution was introduced into a pneumatic nebulization instem by the standard addition method.The determination of Iron and Lead in aloe by microwave plasma torch atomic emission spectrometry(MPT-AES)was studied.By observing the experimental comditions(including HNO_3 concentration in the sample solution,microwave forward power,carrier gas folw rate,support gas flow rate and oxygen shield gas flow rate),the effects of...