摘要
采用2mg/mL磷酸二氢铵-1mg/mL硝酸镁作为混合基体改进剂,电热石墨炉原子化系统和氘灯扣背景校正的原子吸收光谱仪测定鼠肝脏中的痕量铅。结果表明铅在0—100ng/mL呈良好线性关系,r=0.9994,平均回收率为97.6%,RSD=2.6%,检出限为0.40ng/mL。方法操作简便,重现性好、灵敏度高且结果准确。
Using ammonium dihydrogen phosphate-magnesium nitrate as matrix modifiers,the trace lead in mouse liver was determined by electrothermal graphite furnace atomic absorption spectrometry with D2 background correction. An average recovery of 97.6 % was obtained with a RSD of 2. 6% and r=0. 9994 in the range of 0-100ng/mL. The detection limit was 0. 40ng/mL. The proposed method offers simple instrumental operation, good reproducibility, high sensitivity and accuracy.
出处
《光谱实验室》
CAS
CSCD
2006年第3期598-601,共4页
Chinese Journal of Spectroscopy Laboratory
