L-tryptophane samples were digested with ashing method,the method for the determination of lead in L-tryptophane by graphite furnace atomic absorption spectrometry was developed.

• 采用干灰法消化L-色氨酸样品,建立了测定L-色氨酸中重金属(以铅计)含量的石墨炉原子吸收光谱法。