The role of matrix modifier for the determination of Lead (Pb) in blood by graphite furnace atomic absorption spectrometry

흑연로 원자흡수분광법에 의한 혈중 납분석시 매트릭스 변형제의 역할

  • 유광식 (울산대학교 자연과학대학 화학과) ;
  • 권진기 (고려아연(주) 기술연구소)
  • Received : 1992.09.14
  • Published : 1992.12.25

Abstract

The direct determination of lead in the whole-blood by graphite furnace atomic absorption spectrometric analysis was carried out by using the sample which was diluted five-fold with 1% Triton X-100. Matrix modification was tried to remove the interferences of blood matrix and also to get the optimum analytical condition. Good agreement with certificated values in reference materials(bovine blood) supplied by comparison program in Japan was obstained when 1% $(NH_4)_2HPO_4$ as matrix modifier and ashing temperature, $700^{\circ}C$ were used or 1% $(NH_4)_2HPO_4$ and 0.1% $PdCl_2$ as matrix modifier and ashed at $700^{\circ}C$. Standard deviations were appeared as 2.2~6.3% for 1% $(NH_4)_2HPO_4$ and 3.1~9.1% for 1% $(NH_4)_2HPO_4$ and 0.1% $PdCl_2$ in the range of $31{\sim}624{\mu}gPb/l$.

Keywords

Lead;blood;graphite furnace AAS