| 自动电位滴定法测定土壤有机质含量 |
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| 引用本文： | 郝会军,杨俐苹,金继运.自动电位滴定法测定土壤有机质含量[J].中国土壤与肥料,2011(1):83-87. |
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| 作者姓名： | 郝会军 杨俐苹 金继运 |
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| 作者单位： | 1. 潍坊职业学院,山东,潍坊,261031;农业部作物营养与施肥重点实验室,中国农业科学院农业资源与农业区划研究所,北京,100081
2. 农业部作物营养与施肥重点实验室,中国农业科学院农业资源与农业区划研究所,北京,100081 |
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| 基金项目： | 国家科技支撑计划项目，山东省高等学校优秀青年教师国内访问学者项目经费 |
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| 摘 要： | 采用丘林滴定法与自动电位滴定法测定土壤中有机质含量,并对自动电位滴定法做了精密度和加标回收率试验。同时进行了用自动电位滴定法与手工滴定法标定硫酸亚铁标准溶液试验。结果表明,两种方法标定硫酸亚铁标准溶液结果一致,并无显著差别;丘林滴定法和自动电位滴定法均能满足土壤中有机质含量的分析要求,测定结果无显著性差异。自动电位滴定法显示了很好的准确度和重现性,加标回收率在98.43%～101.8%之间,相对标准偏差(RSD)为0.693%～0.936%,可见自动电位滴定法是一种测定土壤有机质含量的好方法。
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| 关 键 词： | 自动电位滴定法 丘林滴定法 土壤有机质 |
Determination of soft organic matter by automatically potentiometric titration method |
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| HAO Hui-jun,YANG Li-ping,JIN Ji-yun.Determination of soft organic matter by automatically potentiometric titration method[J].Soil and Fertilizer Sciences in China,2011(1):83-87. |
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| Authors: | HAO Hui-jun YANG Li-ping JIN Ji-yun |
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| Institution: | HAO Hui-jun1,2,YANG Li-ping2,JIN Ji-yun2(1.Weifang Vocational College,Shandong Weifang 261031,2.Ministry of Agriculture Key Laboratory of Crop Nutrition and Fertilization,Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081) |
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| Abstract: | Soil organic matter(SOM) was determined by Tyurin method with manual titration and automatically potentiometric titration.The precision and recovery rate of automatically potentiometric titration was studied.The concentration of FeSO4 standard solution of was calibrated by both automatically potentiometric titration and manual titration method.The results indicated that there was identical and no remarkable difference for calibration of FeSO4 standard solution by two methods.There was no significance differ... |
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| Keywords: | automatically potentiometric titration method Tyurin method soil organic matter |
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