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辣椒中微量钼的分光光度法测定——土壤植物中微量元素分析之一

Analysis of Micro Eiements in PJant(i)——Spectrophotometric determination of Micro-Molybdenum in Chilli
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摘要 植物中钼含量仅占0.1~10ppm,但却是植物生长的必需微量元素。本文用苯基萤尤酮一吐温80-vc显色体系,研究了测定钼的最佳条件,解决了Fe(Ⅲ)的干扰问题。实验结果表明,本方法的灵敏度和重现性比KSCN光度法好,且不必萃取分离,就可准确测定植物中0.1~10ppm范围的钼。在这个体系中用标准加入法测定湖南辣椒中的微量钼的相对于标准误差为3.4%,而回收率在92—103%之内。 Molybdenum is indispensable to plant-growth, although its content in plant is only 0.1-10 ppm. This paper studies the best conditions of determining molybdenum in plant with Phenylf'luorone-Tween 8o-Vitamin C systems and a key problem of the interference of Fe(Ⅲ) has been solved. Experimental results show that sensitivity and reproducibility of this method are better than that of KSCN-spectrophotometric method, and Molybdenum in plants at o.l-10 ppm range can be accurately determined without extraction and separation. Micro-molybdenum in Hunan-Chilli has been determined by the standard addition method in this system, and the relative standard deviation is 3.4% and the rate of recovery is 92-103%.
机构地区 铁道师院化学系
出处 《苏州科技学院学报(社会科学版)》 1992年第S1期30-34,54,共6页 Journal of University of Science and Technology of Suzhou:Social Science
关键词 辣椒 植物 分光光度法 Molybdenum, chilli, plant, spectropotometry
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参考文献3

  • 1许俊英,王怀公.钼(Ⅵ)-苯芴酮-吐温80体系显色反应的研究[J]兰州大学学报,1985(03).
  • 2(德)门格尔(Mengel,K.),(英)克尔克贝(Kirkby,E.A.)著,张宜春等.植物营养原理[M]农业出版社,1987.
  • 3中国土壤学会农业化学专业委员会.土壤农业化学常规分析方法[M]科学出版社,1983.

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