天然水中汞含量极低,即使采用十分灵敏的定量技术,也需经较大倍数的富集才可准确测定.活性炭对汞吸附力极强,能从锌盐或金盐溶液中定量吸附低达1×10~（-9）g·L~(-1)的汞.在前文工作基础之上,我们进一步研究了汞在活性炭上的吸附行为和解吸附条件,建立了一种定量富集水中超痕量汞的技术,用于河水等实际样品测定,获得了满意结果. Very low mercury content in natural water, even with a very sensitive quantitative techniques, but also by a large multiple enrichment can be accurately measured Activated carbon adsorption of mercury is extremely strong, from the zinc salt or gold salt solution quantitative adsorption as low as 1 × 10 -9 g · L -1 .On the basis of the previous work, we further studied the adsorption behavior and desorption conditions of mercury on activated carbon, and established a method for the quantitative determination of mercury Trace mercury technology, used in river samples and other real samples, obtained satisfactory results.