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研究了Ag,Au,Bi,Cd,Co,Cu,Ga,In,Ni,Pb,Pd,Sb,Zn等13个元素的原子捕集与释放条件.结果表明,缝管高度和火焰状态对灵敏度影响极大.在最佳实验条件下,捕集1min,测得Ag,Au,Bi,Cd,Co,Cu,Ga,In,Ni,Pb,Pd,Zn的特征浓度分别为8.1×10-4,1.7×10-3,3.5×10-3,3.7×10-5,1.6×10-2,1.8×10-3,1.6×102,3.6×10-3,2.2×10-2,2.4×103,4.7×10-2,1.8×10-3,1.3×10-4mg·L-1,比常规火焰原子吸收光谱法的灵敏度依次提高62,106,254,270,5,28,131,271,3,83,5,239,77倍,本法测定了环境、生物、医药和金属等试样中痕量元素.
The atomic trapping and releasing conditions of 13 elements such as Ag, Au, Bi, Cd, Co, Cu, Ga, In, Ni, Pb, Pd, Sb and Zn were studied. The results show that the seam height and flame status greatly affect the sensitivity. Under the optimal experimental conditions, the characteristic concentrations of Ag, Au, Bi, Cd, Co, Cu, Ga, In, Ni, Pb, Pd and Zn were measured at 1 min after trapping, 7 × 10 -3, 3.5 × 10 -3, 3.7 × 10 -5, 1.6 × 10 -2, 1.8 × 10 -3, 1.6 × 102, 3.6 × 10 -3,2.2 × 10 -2, 2.4 × 10 3, 4.7 × 10 -2, 1.8 × 10 -3 and 1.3 × 10 -4 mg · L -1, respectively. Compared with the conventional flame atomic absorption The sensitivity of the spectrometry increased by 62,106,254,270,5,28,131,271,3,83,5,239,77 times, this method is the determination of environmental, biological, pharmaceutical and metal samples such as trace element.