摘要
硝酸和氢氟酸密封消解茶场土壤样品，用石墨炉原子吸收测定镉和铅含量．其检出限镉为0．053ngmL^-1、铅为0．1ngmL^-1，线性范围镉为0～2ngmL^-1、铅为0～50ngmL^-1．回收率在93．0％～104．0％．本方法简便了消解过程，一次消解能同时测定样品中的多种重金属．
A sealed digestion technique was established to measure Cd and Pb in tea plantation soil. After extracted with nitric -hydrofluoric acid, they were analyzed by graphite furnace atomic absorption spectrometry. The detection limit is 0. 053 ng · mL^-1 for Cd and 0.1 ng · mL^-1 for Pb. The linear range for calibration is 0 - 2 ng · mL^-1 for Cd and 0 -50 ng · mL^-1 for Pb,with recovery rate of 93.0% - 104.0%. The method is simple and capable of measuring several heavy metals in one time.
出处
《贵州科学》
2008年第2期90-93,共4页
Guizhou Science
关键词
茶场土壤
石墨炉原子吸收
铅
镉
tea plantation soil
graphite furnace atomic absorption spectrometry
lead
cadmium
