| 甲基纤维素在重量法测土壤硅中的应用研究 |
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| 引用本文： | 王定勇,石孝均,杨学春.甲基纤维素在重量法测土壤硅中的应用研究[J].生态环境,1994(2). |
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| 作者姓名： | 王定勇 石孝均 杨学春 |
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| 作者单位： | 西南农业大学土化系 |
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| 摘 要： | 在重量法测定土壤全硅中，用甲基纤维素作凝聚剂，试验结果表明，用该凝聚剂与动物胶作凝聚剂测定土壤全硅的结果基本一致。甲基纤维素法的回收率为９３．８％—１０８．３％，标准差为０．３０％，变异系数最大为０．８８％；动物胶法的回收率为９２．３％—１０５．３％．用两种方法测定同一样品，两者间的绝对相差最大只有０．５％；ｔ检验表明，ｔ＝０．３６１＜ｔ（０．０５）＝２．２０，差异极不显著．因此，甲基纤维素可作为重量法测土壤硅的凝聚剂．
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| 关 键 词： | 甲基纤维素，土壤，硅，重量法测定 |
STUDY ON USING METHYL CELLULOSE IN DETERMINATION OF SOIL SILAZANE BY GRAVIMETRIC ANALYSIS |
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| Wang Dingyong, Shi Xiaojun and Yang Xuechun.STUDY ON USING METHYL CELLULOSE IN DETERMINATION OF SOIL SILAZANE BY GRAVIMETRIC ANALYSIS[J].Ecology and Environmnet,1994(2). |
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| Authors: | Wang Dingyong Shi Xiaojun and Yang Xuechun |
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| Abstract: | Methyl cellulose was used as polymerization regulator for soil silazane determination by gravimetric analysis. The results showed that there was no significant difference between methyl cellulose and animal glue as polymerization regulator. The recovery of the methyl cellulose method was 93. 8%-108. 3% with 0. 30% as the standard deviation and 0. 88% as the greatest cofficient variation. The recovery of the animal glue method was 92. 3%-105. 2%,and the silazane values determinationed by the two methods for the same sample showed only 0. 5% as the greatest variation. The result of T-test was t=0. 361
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| Keywords: | methyl cellulose soil silicon gravimetric analysis |
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