热解-金丝富集法冷原子吸收测汞仪测定生物样品中的痕量汞

Measuring Trace Hg in Organic Samples by Using Atomic Absorption Method

摘要:

生物样品经高温热解,汞及大量热解气体一同释出。以NaOH和Na2O2为吸附剂,消除酸性及还原性气体的干扰;以覆盖黄土,减缓燃烧过程,消除烟尘及气溶胶的干扰,利用金丝捕汞管吸附热解气体中的汞气,以此测定生物样品中的汞含量。方法快速、简便、使用性强,尤其适合地矿行业应用。

Abstract:

Through pyrolysis, Hg and pyrolytic vapor will be reliefed from organic samples. Regarding NaOH and Na2O2 as absorbent, eliminating disturb of acid and reduction gas, covering soil to lessen the burning period, eliminating disturb of smoke and gasoloid, and using Hg collection pipe to absorp Hg, thus, Hg content in organic samples can be measured. It is very quick, easy and suitable in geological measurement.