Determination of Metallic Element in Soybean Coat by Fermentation-Microwave Digestion-Microwave after Semi-Ashing Plasma Torch Atomic Emission Spectrometry(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:

2011年02期

Page:

314-317

Research Field:

Publishing date:

Info

Title:

Determination of Metallic Element in Soybean Coat by Fermentation-Microwave Digestion-Microwave after Semi-Ashing Plasma Torch Atomic Emission Spectrometry

Author(s):

LI Xiu-ping¹; ZHAO Rong-xiang²;  LI Li-hua²; ZHANG Jin-sheng¹

1.School of Chemistry & Material，Liaoning University of Petroleum & Chemical Technology；

2.School of Petroleum & Chemical Technology，Liaoning University of Petroleum & Chemical Technology， Fushun 113001，Liaoning, China

Keywords:

MPT-AES; Soybean coat;  Metal element

PACS:

TS214.2

DOI:

10.11861/j.issn.1000-9841.2011.02.0314

Abstract:

Soybean coat samples were digested by H₂O₂-HNO₃ solution after semi-ashing in a closed microwave system and the determination of iron，nickel，magnesium，calcium zinc and copper in soybean coat has been performed by MPT-AES. Experimenta1 conditions were optimized and established. The effects of acid concentration and coexisting ions(K，Na，Fe，Ni，Al，Zn，M g，Ca)on determination of iron，nickel，magnesium，calcium zinc and copper were investigated. The results showed that the detection limits of iron，nickel，magnesium，calcium, zinc and copper were 22.94,7.55,0.36,0.92,16.27 and 2.1 ng·mL^-1, respectively. The RSD was no more than 3.2%, it showed the adopted method had good precision. The linear ranges of iron，nickel，magnesium，calcium, zinc and copper were 0-12, 0-12, 0-35, 0-32, 0-7 and 0-12 μg·mL^-1,respectively. The recoveries were 96.8%-101.3%,98.4%-103.7%, 95.9%-99.6%, 96.3%-103.5%, 99.8%-103.5% and 97.6%-105.3%, respectively. Compared with conventional test methods, MPT combined with half ash and microwave digestion samples was efficient with high accuracy and repeatability and applicable to sample analysis.

References:

[1]孟庆翔, 鲁琳, 阂晓梅, 等. 大豆皮替代产奶牛日粮精料中玉米与小麦麸对产奶性能和干物质与纤维消化特性的影响[J]. 饲料广角, 2006(2):31-33. (Meng Q X, Lu L, He X M, et al. Soybean husk replace the corn in concentrated food and wheat gluten, which influence on milk production performance produce, dry matter and fiber digestive of milking cow[J]. Feed China, 2006(2):31-33.)

[2]侯世忠, 祝平, 井长伟. 大豆皮的营养价值及在饲料中的应用[J]. 吉林畜牧兽医, 2007, 28 (9):18-21. (Hou S Z, Zhu P, Jing C W. Nutrition value and application in feed of soybean hulls[J]. Jilin Animal and Veterinary Sciences, 2007, 28 (9):18-21.)

[3]Belyea R L, Stevens B J, Restrepo R J, et al.Variation in composition of by-product feeds[J]. Dairy Science, 1989, 72:2339-2345.

[4]Ludden P A, Cecava M J, Hendrix K S. The value of soybean hulls as a replacement for corn in beef cattle diets formulated with or without added fat[J]. Animal Science, 1995, 73:2706-2718.

[5]Anderson S J, Merril1 J K, McDonnell M L, et al. Digestibility and utilization of mechanically processed soybean hulls by 1ambs and steers[J]. Animal Science, 1988, 66:2965-2976.

[6]Acgergor C A, Owen F G, McGill L D.Effect of increasing ration fiber with soybean mill run on digestibility and lactation performance[J]. Journal of Dairy Science, 1976, 59:682-689.

[7]陈颖. 茶叶中8种元素的初步形态研究[J]. 分析测试通报, 1992, 11(2):61-63. (Chen Y. Analysis of primary speciation of eight elements in tea[J]. Bulletin Analysis and Testing, 1992, 11(2):61-63.)

[8]杨京蓉. 微波消解ICP-AES法测定粮食中的常量及微量元素[J]. 光谱实验室, 1997, 14(3):22-25. (Yang J R. Determination of content of major and trace elements in grain crops by microwave digestion and ICP-AES method[J]. Chinese Journal of Spectroscopy Laboratory, 1997, 14(3):22-25.)

[9]马晓国, 成晓玲. 微波消解－ICP-AES法测定茶叶中的微量元素[J]. 广州微量元素科学, 1999, 6(4):59-63. ( Ma X L, Chen X L. Determination of trace elements in tea samples by microwave digestion and ICP-AES[J]. Guangzhou Trace Elements Science, 1999, 6(4):59-63.)

Memo

Memo:

-

Common functions