| 测定树木中总氮的新方法 |
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| 引用本文： | 欧惠英,张连弟.测定树木中总氮的新方法[J].江苏林业科技,1992,19(2):22-26. |
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| 作者姓名： | 欧惠英 张连弟 |
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| 作者单位： | 南京林业大学
(欧惠英，乐美麟)，南京土壤研究所(张连弟) |
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| 摘 要： | 本文用过硫酸盐法,用离子选择性电极测定惚木,黄毛偬木、棘茎楤木、食用土当归、细柱五加、中华五加、吴茱蔓五加和竹节参中的总氮,相对标准偏差为0.69％～10.1％,回收率为96.7％～100％,本方法准确度和精密度比较高,省时,省电.省试剂和环境污染小等。故树木和植物样品的分析,有理由用过硫酸盐法(TPN法)代替凯氏法(TKN法)。
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| 关 键 词： | 过硫酸盐法 五加 氮 测定 |
The new method for the determination of the content of nitrogen in tree samples |
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| Ou Hui Ying,Le Mei Lin Nading Foreatry university,Longpan ROad,NanJ-
ng,PRC.The new method for the determination of the content of nitrogen in tree samples[J].Journal of Jiangsu Forestry Science & Technology,1992,19(2):22-26. |
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| Authors: | Ou Hui Ying Le Mei Lin Nading Foreatry university Longpan ROad NanJ-
ng PRC |
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| Institution: | Ou Hui Ying*,Le Mei Lin Nading Foreatry university,Longpan ROad,NanJ-
ng,210037,PRC |
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| Abstract: | This paper discribes solution of samples in high pressure by means of persulfate oxidation, determination of the content of nitrogen using the potentioetric determinations with ion-selective electrodes in the Aralia chi-nensis, Aralia decaisneana, Aralia echnocaulis, Acanthopanax cordata, Acanthopanax gracilistylus, Acanthopanax fargesii, Acanthopanax evod-iaefolius and Panax japonicus. The RSD is 0.69%~10.1%,The recovery of nitrogen is 96.7%~100%. Precision and accuracy for analyses of all samples are high. The method save time, electricity and the amount of reagents. It has little pollution.
TPN is a reasonable alternative to the standard TKN procedure for analysis of the and plant materials. |
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| Keywords: | TPN Ion-selective electrodes Aralia Acanthopanax |
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