摘要
将复合塑料袋用4%乙酸浸泡,采用石墨炉原子吸收光谱仪对其中的铅、镉、铬、镍、铜、砷迁移量进行了测定。结果表明:各元素的吸光度与质量浓度呈良好的线性关系,相关系数为0.9989～0.9999,元素Pb、Cd、Cr、Ni、Cu、As的检出限分别为1.04、0.05、0.98、1.00、0.97、0.96μg/L,各元素测定结果的相对标准偏差在1.03%～6.81%之间(n=6),样品的加标回收率为95.11%～104.52%。
The composite laminated food packing bag was soaked in 4% acetic acid. The content of Pb, Cd, Cr, Ni, Cu, As in sample solution was determined by GFAAS. The absorbance and mass concentration had good linear relation. The liner calibration curves regression coefficients were 0.998 9-0.999 9, and the method detection limit were 1.04, 0.05, 0.98, 1.00, 0.97, 0.96 μg/L for Pb, Cd, Cr, Ni, Cu, As. The relative standard deviations of detrtmination results were 1.03%-6.81%（n=6）, and the recoveries were 95.11%-104.52%.
出处
《化学分析计量》
CAS
2011年第6期54-56,共3页
Chemical Analysis And Meterage
关键词
石墨炉法
复合塑料包装袋
迁移量
铅
镉
铬
镍
铜
砷
GFAASI composite laminated food packing bag, migration, Pb, Cd, Cr, Ni, Cu, As
