| 光谱学与光谱分析 |
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| Determination of Soil Exchangeable Base Cations by Using Atomic Absorption Spectrophotometer and Extraction with Ammonium Acetate |
| ZHANG Yu-ge1, XIAO Min1, DONG Yi-hua1, JIANG Yong2 |
1. College of Biological and Environmental Engineering, Shenyang University, Shenyang 110044, China
2. State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China |
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Abstract A method to determine soil exchangeable calcium (Ca), magnesium (Mg), potassium (K), and sodium (Na) by using atomic absorption spectrophotometer (AAS) and extraction with ammonium acetate was developed. Results showed that the accuracy of exchangeable base cation data with AAS method fits well with the national standard referential soil data. The relative errors for parallel samples of exchangeable Ca and Mg with 66 pair samples ranged from 0.02%~3.14% and 0.06%~4.06%, and averaged to be 1.22% and 1.25%, respectively. The relative errors for exchangeable K and Na with AAS and flame photometer (FP) ranged from 0.06%~8.39% and 0.06~1.54, and averaged to be 3.72% and 0.56%, respectively. A case study showed that the determination method for exchangeable base cations by using AAS was proven to be reliable and trustable, which could reflect the real situation of soil cation exchange properties in farmlands.
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Received: 2012-03-23
Accepted: 2012-06-20
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Corresponding Authors:
ZHANG Yu-ge
E-mail: zhangyvge@sina.com.cn
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