【摘要】 石墨炉原子吸收法测定生物样品中痕量钼时，用氟化钙作基体改进剂，可使相的原子吸光度提高５．７倍，其特征量由原来的４．２×１０￣（－１１）ｇ／１％吸收降低到５．１×１０￣（－１２）ｇ／１％吸收，测定下限为０．５５ｎｇ·ｍＬ￣（－１），线性范围为０～１０００ｎｇ·ｍＬ￣（－１）。对人发和牛血清标样中痕量钼测定，结果满意。更多还原

【Abstract】 raphite furnace atomic absorptionspectrophotometry（GFAAS ） was used forthe determination of trace molybdenum inserum and hair by the enhancing effect ofCaF₂.The sensitivity is 5.1×10￣（-3）ng/ mL/1%,The calibration curve is linear for 0～1000ng/mL of molydenum,Trace molybde-num in serum and hair can be directly mea-sured without pre-separation.The relativeerror is±2%at the level of trace molybde-num in two biological standard samples.更多还原