石墨炉原子吸收光谱法测定海产品中镉含量
GFAAS Determination of Cadmuim in Seafoods
摘 要
采用固体进样-石墨炉原子吸收光谱法测定海产品中镉的含量。以1.0 g·L-1硝酸铅溶液为基体改进剂,灰化温度为950 ℃,原子化温度为1 900 ℃。镉的进样量在0.05~0.2 ng之间与其吸光度呈线性关系,检出限(3s)为0.015 ng。应用此法分析了海产品样品,加标回收率在60.0%~90.0%之间,测定结果与液体进样-石墨炉原子吸收光谱法测定结果基本一致。
石墨炉原子吸收光谱法
镉
海产品
Solid sampling
GFAAS
Cadmium
Seafood
Abstract
A method of GFAAS with solid sample introduction was proposed for the determination of cadmium in seafood. A solution of 1.0 g·L-1 Pb(NO3)2 was used as matrix modifier, and temperatures selected for ashing and atomization were 950 ℃ and 1 900 ℃ respectively. Linear relationship between values of absorbance and mass of cadmium was obtained in the range of 0.05-0.2 ng, with detection limit (3s) of 0.015 ng. The proposed method was used in the analysis of sample of seafood, and results obtained were in consistency with those obtained by liquid sample introduction GFAAS. Values of recovery found by standard addition method were in the range of 60.0%-90.0%.
中图分类号 O657.31
所属栏目 工作简报
基金项目
收稿日期 2011/12/14
修改稿日期
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备注樊祥(1979-),男,辽宁营口人,工程师,硕士,主要从事食品分析。
引用该论文: FAN Xiang,SHAO Min,LIU Bo,CHEN Di,ZHANG Run-he,CHEN Wen-jun,CAO Chen,QU Li. GFAAS Determination of Cadmuim in Seafoods[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2013, 49(1): 35～38
樊祥,邵敏,刘博,陈迪,张润何,陈文珺,曹晨,曲栗. 石墨炉原子吸收光谱法测定海产品中镉含量[J]. 理化检验－化学分册, 2013, 49(1): 35～38
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参考文献
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【11】樊祥,伊雄海,张继东,等.食品中铅的快速检测方法研究［J］.现代仪器, 2010,16(91):62-65．
【12】樊祥,庞昉,张继东,等.海产品中汞的快速检测研究［J］.检验检疫学刊, 2011,21(1):24-27．
【2】徐维海.对虾样品中铅、镉的微波消解与常规消解分析方法比较研究［J］.海洋科学, 2005,29(6):38-41．
【3】李连平,吴国汉,黄志勇.原子荧光光谱法测定海水及海产品中微量的镉［J］.食品工业科技, 2007,29(4):291-293．
【4】别克赛力克·库尔买提,王蕾,王娟.冷原子荧光光谱法测定海产品中痕量镉［J］.分析试验室, 2010,29(7):19-22．
【5】谢华林.微波消解电感耦合等离子体发射光谱法同时测定水产品中铅镉铬汞砷硒有害元素的研究［J］.食品科学, 2002,23(2):108-110．
【6】朱勇,赵键,杨挺,等.微波消解-ICP-MS法测定海产品中的微量元素［J］.现代仪器, 2006,12(4):42-43．
【7】樊祥,韩丽,伊雄海,等.电感耦合等离子体质谱法测定面制食品中铝［J］.理化检验-化学分册, 2010,46(10):1132-1134．
【8】RODENAS R S, SANCHEZ-MUNIZ F J, GOMEZ-JUARISTI M, et al. Trace elements determination in edible seaweeds by an optimized and validated ICP-MS method［J］. Journal of Food Composition and Analysis, 2009,22(4):330-336．
【9】孙普兵,刘建宇,刘文丽,等.直接固体进样石墨炉原子吸收光谱法测定食品包装纸中铅、镉［J］.检验检疫科学, 2007,17(5):24-26．
【10】DETCHEVA A, GROBECKER K H. Determination of Hg, Cd, Mn, Pb and Sn in seafood by solid sampling Zeeman atomic absorption spectrometry［J］. Spectrochimica Acta Part B, 2006,61:454-459．
【11】樊祥,伊雄海,张继东,等.食品中铅的快速检测方法研究［J］.现代仪器, 2010,16(91):62-65．
【12】樊祥,庞昉,张继东,等.海产品中汞的快速检测研究［J］.检验检疫学刊, 2011,21(1):24-27．
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