摘要
采用微波消解技术消解城市污水处理厂污泥样品,用火焰原子吸收光谱法测定Cu、Zn,石墨炉原子吸收光谱法测定Pb、Cd、Ni。通过测定国家标准参考物质和加标回收试验,对方法进行了验证,方法的精密度和准确度均能满足污泥环境样品的测试要求。在试验条件下,测定样品中Cu、Zn、Pb、Cd、Ni的加标回收率在95.2%～103%之间,相对标准偏差<3%。
Samples of activated sludge were digested by microwave, copper and zinc were determined by flame atomic absorption spectrometry, and lead, cadmium and nickel were determined by graphite furnace atomic absorption spectrometry. The method was validated by the recoveries of standard additions and standard material. The precision and accuracy of the method could meet the testing require- ment for sludge samples. Under the experimental conditions, the recovery rates of copper, zinc, lead, cadmium and nickel in the samples were in the range of 95.2% to 103%, and the RSDs were less than 3%.
出处
《中国给水排水》
CAS
CSCD
北大核心
2013年第4期91-93,共3页
China Water & Wastewater
关键词
微波消解
原子吸收
污泥
重金属
microwave digestion
atomic absorption
sludge
heavy metal
