【摘要】 用超声波处理30min 和手工研磨60min/g 制备的土样水悬浮液,直接导入石墨炉 AAS(原子吸收)分析 Mn 和 Cu 全量值,都能达到<10％的精密度和≤10％的准确度。进样时:悬浮液要求采用恒转速的弱搅拌。本方法适用于金属元素含量<1％的土壤。更多还原

【Abstract】 The soil suspension prepared by ultrasonic powder for 30 min or hand powder for 60 min was introduced into the graphite furnace AAS for Mn and Cu determinations. The measurable values show that the precision and accuracy can reached<10% and ≤10% levels respectively.When introduced into the furnace,the soil suspension must be weakly agilated at a permaneat speed.This procedure is applicable to a soil which contains a certain metal<1% by weight.更多还原