中国食品添加剂Issue(8)：182-187,6.
石墨炉原子吸收光谱法测定皂树皮提取物中铅的不确定度评定
Assessment of Lead determination uncertaintyin quillaia extract by GFAAS
摘要
Abstract
Object:To study and assess the uncertainty of Lead in quillaia extract by graphite furnace atomic absorption spectrometer (GFAAS).Method:The Lead contents in two quillaia extract samples (X1 and X2) were determinate by GFAAS and the uncertainties were calculated by sample weight,volume,standard solution preparation,standard curveinthe mathematical model.Result:The Lead content in sample X1 was 1.28 mg/kg and the expanded uncertainty was 0.090 mg/kg (k=2).The Lead content in sample X2 was 3.90 mg/kg and the expanded uncertainty was 0.250 mg/kg (k=2).Conclusion:The recovery,variability of the blank,lead content in digestive solution and duplicability were four major factors in calculating the uncertainty.The reasonable assessment of measuring uncertainty could be made for determination of Lead in solid samples by GFAAS through establishing a mathematical model.关键词
石墨炉原子吸收光谱法/铅/不确定度Key words
GFAAS/Lead/uncertainty分类
轻工纺织引用本文复制引用
胡曙光,苏祖俭,蔡文华,王晶,黄伟雄,范建彬,黄泓耀..石墨炉原子吸收光谱法测定皂树皮提取物中铅的不确定度评定[J].中国食品添加剂,2017,(8):182-187,6.基金项目
广东省医学科学技术研究基金项目(C2016007). （C2016007）
