密封增压微波消化火焰原子吸收测定牡蛎中重金属含量

Determination of heavy metals in oysters with flame AAS digested by microwave

本文采用聚四氟乙烯密封增压微波消化法消解牡蛎样品，火焰原子吸收法测定其重金属Ｃｕ、Ｚｎ、Ｃｄ、Ｍｎ、Ｎｉ、Ｃｒ、Ｐｂ的含量，并与传统的混酸消化法和干灰化法的结果相比较。实验证明，本文方法的精密度、准确度、最低检出限都能很好地满足测定要求。该方法简便、快捷，节省能源和试剂，有较高的实用价值。

A microwave digestion method is described for the determination of coper、zine、cadmium、manganese、nickel、chromium and lead in oysters by flame AASThe detection limits are Cu 0796×10-6;Zn 170×10-6;Cd 0963×10-6;Mn 162×10-6;Ni 195×10-6;Cr 128×10-6;Pb 111×10-6The mean recoverys are 993(9161044)%、1057(988～1106)%、974(880～1078)%、968(913～1043)%、970(918～1023)%、1006(895～1107)% and 1036(905～1108)% respectivelyThe relative standard deviations are 12%;19%;57%;18%;62%;80% and 73% The proposed method is simple, rapid and safe.