摘要
将流动注射分析技术和离子选择性电极法相结合,提出一种快速测定纯水中痕量Na^+的新方法。本方法实现了在线自动碱化、完全密封状态下的测量和电极自动清洗;测定范围为0.6～10μg/L和20～100μg/L,检出限为0.55μg/L。本方法分析速度为40～50样/h,样品耗量为0.3mL/次。本方法已成功用于电厂炉水、蒸汽中痕量Na^+的测定。基于本方法可开发一种全自动的新型痕量钠离子测定仪。
Combining flow-injection analysis with ion selective electrode method, a quick determination method of trace-level sodium ion in
water-steam cycle of thermal power plant is put forward. By using this method, on-line automatic basification, the measurement and
automatic cleaning of electrode under totally sealed state can be accomplished; the measurement ranges 0.6～10 μg/L and 20～100 μg/L.The
analysis speed of this method is 40～50 samples/h, consumption of sample is 0.3 mL/time. this method has been used successfully to
determine the trace-level Na^+ in the boiler water-steam of thermal power plant. Based upon this method a new type totally automatic
trace-level Na^+ measuring device can be developed.
出处
《中国电力》
CSCD
北大核心
2004年第3期52-55,共4页
Electric Power
关键词
电厂
水汽
钠离子
自动快速测定法
蒸汽品质
thermal power plant
boiler water
steam
flow-injection analysis
ion selective electrode
sodium ion(Na^+)
