摘要
本文比较了煤样消解的七种湿消解体系,从中选用Mo催化H_2SO_4-HClO_4消解法,该法对0.2g煤样只需20—60min就能完全消解,有机汞和无机汞的加标回收率分别为96.4％和97.8％。该法适于大批量快速准确测定煤中痕量汞。
The optimum experimental condition of determining trace mercury in coal have been studied. Seven wet digestion systems for coal have been tested.Mo catalytic digestion of H2SO4-HCIO4 system has been chosen. It takes about 20-60 min. to digest 0.2g coal completely, and the recovery for adding standard inorganic and organic mercury solution is 97.8% and 96.4% respectively.This method is rather quick and accurate for determination of trace mercury in coal.
出处
《环境化学》
CAS
CSCD
北大核心
1991年第4期67-73,共7页
Environmental Chemistry
