Twin-spray flame atomic-absorption spectrometric determination of antimony, bismuth and mercury in geochemical samples.
A new flame atomic-absorption method for determination of antimony, bismuth and mercury, called the twin-spray method, has been established. The operating conditions and potential interferences have been investigated in detail. Under the optimized conditions the sensitivities obtained are 20, 30 and 70 times higher for antimony, bismuth and mercury respectively, than those of conventional AAS. The method can be used to determine as little as 0.00n% of antimony, 0.000n% of bismuth and 0.0n% of mercury in geochemical samples. The procedures are very simple and easy and need no extra apparatus for hydride generation.
Xian-An
Y
Y
Shenyang Institute of Geology and Mineral Resources, Shenyang, Liaoning, People's Republic of China.
Gao-Xiang
D
D
Chun-Xue
L
L