摘要
采用石墨炉原子吸收光谱法测定钼中铅含量.考察了原子化温度、原子化时间及基体干扰等因素,得到了最佳测定条件为：灰化温度1000℃、原子化温度1600℃、原子化时间2s、过氧化氢用量4～5 mL、硝酸介质浓度3％ （v/v）.检出限为1.33 ng/mL,特征浓度为1.52 ng/mL,回收率为100.0％ ～ 110.0％.
Lead content in molybdenum was determined by graphite furnace atomic absorption spectrometry.Atomization temperature,atomic time and matrix interference were studied.The best measurement condition is：ashing temperature 1 000 ℃,atomization temperature 1 600 ℃,atomization time 2 s,hydrogen peroxide dosage 4 to 5 mL and HNO3 medium concentration 3％ （V/V）.The detection limit is 1.33 ng/mL,characteristic concentration 1.52 ng/mL,and the recovery of 100.0％ to 110.0％.
出处
《中国钼业》
2013年第5期41-44,共4页
China Molybdenum Industry
关键词
石墨炉
原子吸收光谱法
钼
铅
graphite furnace
atomic absorption spectrometry
molybdenum
lead
