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不同载气对冷原子荧光法直接测定海水中的痕量汞的影响
张淑美¹, 郑舜琴¹
中国科学院海洋研究所

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THE EFFECT OF CARRIER GASES ON COLD VAPOUR ATOMIC FLUORESCENCE FOR DIRECT DETERMINATION OF MERCURY CONCENTRATION IN SEAWATER

Abstract:

This paper discussed the effect of different carrier gases on cold vapour atomic fluorescence for direct determination of mercury concentration in seawater. It was found that the enhancement of the fluorescence signal obtained with argon as the carrier gas instead of highly pure nitrogen is approximately a factor of 4. The standard solutions prepared with 1% sodium chloride mixed acid solution was more stable than that prepared with mixed acid. The concentrations of inorganic and total mercury in seawater samples taken from Jiaozhou Bay are 0.0017μg/L and 0.0037μg/L respectively.

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