食品科学 ›› 2010, Vol. 31 ›› Issue (24): 337-340.doi: 10.7506/spkx1002-6630-201024074

• 分析检测 • 上一篇    下一篇

电感耦合等离子发射光谱法测定铅法皮蛋中的多种无机元素含量

赵 燕1,2,李 鑫2,李建科2,徐明生1,涂勇刚1,3,*   

  1. 1. 江西农业大学食品科学与工程学院
    2. 南昌大学 生物质转化教育部工程研究中心
    3.洪门集团 国家蛋品加工技术研发分中心
  • 收稿日期:2010-08-18 修回日期:2010-11-04 出版日期:2010-12-25 发布日期:2010-12-29
  • 通讯作者: 涂勇刚 E-mail:tygzy1212@yahoo.com.cn

Determination of Inorganic Elements in Preserved Eggs by ICP-AES

ZHAO Yan1,2,LI Xin2,LI Jian-ke2,XU Ming-sheng1,TU Yong-gang1,3,*   

  1. 1. College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang 330045, China;
    2. Engineering Research Center of Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China;
    3. Subsidiary Research Center of National Egg Processing, Hongmen Group, Nancheng 344700, China
  • Received:2010-08-18 Revised:2010-11-04 Online:2010-12-25 Published:2010-12-29
  • Contact: TU Yong-gang E-mail:tygzy1212@yahoo.com.cn

摘要:

采用电感耦合等离子发射光谱法(ICP-AES)对鲜鸭蛋和铅法皮蛋蛋壳、蛋白、蛋黄中的Pb、Cu、Mg、Zn、Ca、Fe 等20 种无机元素进行分析测定。该方法的加标回收率为84.4%~112.2%,相对标准偏差小于7%,20 种元素的方法检测限在0.4~10g/L 之间。结果表明:铅法皮蛋可食部分中富含多种人体所必需的无机元素,且其蛋黄中的大部分有机元素含量皆高于蛋白。鲜鸭蛋经加工成皮蛋后,Cu、Fe、Al、Pb、Mn 等元素在各部位含量明显升高,其中有害元素Pb 的含量大大提高,且由外到内其Pb 的含量增幅呈逐渐减少的趋势。实验同时说明:ICP-AES 法是一种快速、准确、灵敏测定皮蛋中无机元素的有效方法。

关键词: 电感耦合等离子体原子发射光谱, 铅法, 皮蛋, 无机元素

Abstract:

In the present study, the contents of twenty inorganic elements such as Pb, Cu, Mg, Zn, Ca and Fe in fresh duck eggs and lead-prepared preserved eggs by ICP-AES. The recovery rates of spiked standard samples were in the range of 84.4%-112.2% with the relative standard deviation less than 7%. The detection limits of this method for twenty elements were in the range of 0.4-10 g/L. Results showed that lead-prepared preserved eggs were rich in essential inorganic elements, and the contents of most of organic elements in yolk were higher than those in egg white. Compared with fresh duck eggs, the contents of Cu, Fe, Al, Pb and Mn were significantly increased in preserved eggs. The content of Pb was greatly improved, and the increased trend of Pb content was exhibited a gradual attenuation trend from outside to inside. Meanwhile, experimental results indicated that ICP-AES technique could be used to determine inorganic elements in lead-prepared preserved eggs, which is characteristics of easy operation, accuracy and high sensitivity.

Key words: ICP-AES, PbO, preserved egg, inorganic elements

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