摘要
以铜和铅为例建立了一种微波消解样品,平台石墨炉原子吸收法测定活性污泥中重金属含量的方法,该方法的样品加标回收率Cu为91 0%～97 3%,Pb为93 1%～98 0%,相对标准偏差RSD(%):Cu为1 38%～1 61%,Pb为1 28%～1 94%,检验限Cu为0 0052ng g,Pb为0 0073ng g,该方法应用于活性污泥中重金属的分析,实验所需时间短,取样量少,空白值低,实验过程中样品损失小,准确度和灵敏度高,结果令人满意。
Heavy metal in activated sludge were determined successfully sampled as copper and lead by the platform graphite furnace atomic absorption spectrometry, digest sample by microwave-heating in a tightly closed PTEF vessel. Under experiment condition, RSD of copper is in the range of 1%～2%,recoveries were in the range of 95.6%～98.3%,the detection limit was found to be 0.0052ng/g; RSD of lead is in the range of 2.0%～2.9%,recoveries were in the range of 92.3%～97%,the detection limit was found to be 0.0073ng/g. The feasibility of this method was proved by the satisfactory results obtained in the analysis of three sludge samples.
出处
《中国环境监测》
CAS
CSCD
北大核心
2004年第5期27-28,34,共3页
Environmental Monitoring in China
关键词
微波消解
原子吸收
活性污泥
重金属
microwave digestion
atomic absorption
activated sludge
copper
lead
