[Determination of lead in whole blood by graphite furnace atomic absorption spectrometry with matrix modifier and L'vov platform].

Lead in whole blood has been determined by graphite furnace atomic absorption spectrometry with matrix modifier and L'vov platform. It's found that addition of the mixture solution of 0.6% NH4H2PO4 and 0.4% NH4NO3 as matrix modifier, the ash temperature will increase up to 900 degrees C. 750 degrees C is practically used for ash temperature. D2 lamp is used for background correction. Lead in whole blood was directly determined after addition of 0.3% Triton X-100 without digestion. The analytical results of six whole samples is satisfactory. The recoveries are 93%-106%. The relative standard deviations are 3%-7%. The sensitivity of characteristic mass is 6.0 pg/1%.