【摘要】 本文用 0 2 2 μm孔径的微孔滤膜采集大气颗粒物中的铍 ,以铝作基体改进剂 ,并用石墨炉原子吸收分光光度法进行测定 ,该方法具有消解方便、快速、完全 ,滤膜空白值低。用 80 0mg·L-1的铝加入铍试液后 ,使灰化温度达到 2 0 0 0℃ ,样品加标回收率 ,精密度 ,解吸率均较高。更多还原

【Abstract】 Beryllium in the atmospheric particulates is collected with 0 22 μm pore diameter micropore filter membrane,which is determined by graphite furnace atomic absorption spectrophotometer using aluminium as a matrix modifier agent.This sampling method showns several advantages:easy,complete and fast digestion;low membrane blank;high elution recovery,standard addition recovery,precision and accuracy.The addition of 800 mg·L -1 aluminium to beryllium solution allows ashing temperature of 2 000 ℃.The detection limit of 13 5 ng was obtained.更多还原