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利用带八极杆碰撞/反应池和屏蔽炬技术的电感耦合等离子体质谱直接测定混凝土中Cr,Mn,Ni,Cu,Zn,As,Cd,Sn,Sb,Pb等多种重金属元素的溶出量。通过向碰撞池中引入氢气和氦气消除多元素分子离子的干扰,以50μg/L的Ge,In,Tb为内标元素校正基体干扰和漂移。10种待测元素的检出限为0.001～0.033μg/L,相对标准偏差为0.85%～2.8%,样品的加标回收率在91.1%～103.9%之间。
Determination of Dissolution of Cr, Mn, Ni, Cu, Zn, As, Cd, Sn, Sb, Pb and Other Heavy Metals in Concrete by Inductively Coupled Plasma Mass Spectrometry with Octopole Collision / Reactor and Shielding Torch . By introducing hydrogen gas and helium into the collision cell to eliminate the interference of multi-element molecular ions, the substrate interference and drift were corrected with 50 μg / L Ge, In and Tb as internal standard elements. The detection limits of the 10 analytes were 0.001-0.033 μg / L with relative standard deviations of 0.85% -2.8%. The recoveries of spiked samples ranged from 91.1% to 103.9%.