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对容量法和气量法多位测定土壤碳酸钙含量进行了对比试验。结果表明:气量法误差小,精确度高。改进的多位气量法,标准物与样品可同时测定,消除了测定温度和大气压影响。
A comparative test was made on the determination of soil calcium carbonate by multiple methods of volumetric method and gas volumetric method. The results show that the error of gas method is small and the accuracy is high. Improved multi-gas method, standards and samples can be measured simultaneously, eliminating the determination of temperature and atmospheric pressure.