重铬酸钾稀释热比色法测定土壤有机质的研究  

Determination of Organic Matter in Soil with the Method of Potassium Bichromate-dilution Heat Colorimetric

作　　者：谢细香[1] 

机构地区：[1]嘉应学院地理系,广东梅州514015

出　　处：《安徽农业科学》2005年第6期998-999,共2页Journal of Anhui Agricultural Sciences

摘　　要：采用重铬酸钾稀释热比色法测定土壤中的有机质,样品加标回收率为95.2%～108.2%,变异系数(CV)为2.67%～3.68%。结果表明:该方法操作简便,分析速度快,灵敏度和准确度均符合土壤分析要求,而且可以节约油料、能源、时间以及减少环境污染和消除实验中的安全隐患。The content of organic matter in soil was determined with the method of potassium bichromate-dilution heat colorimetric. The recovery rate was 95.2%~108.2% and the CV was 2.67 %~3.68 %. The results showed that this method was convenient operation, fast, low-cost and time-saving and meanwhile, can reduce the environmental pollution and dispel the hazard in the experiment. The sensitivity and accuracy of this method accorded with the request of soil analysis.

关 键 词：重铬酸钾 比色法 土壤有机质 

分 类 号：S153.6[农业科学—土壤学] 21[农业科学—农业基础科学]