THE DETERMINATION OF AMMONIA IN SOILS
THE DETERMINATION OF AMMONIA IN SOILS
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土壤中氨的测定
DOI：
10.1097/00010694-192411000-00008
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发表时间：
1924
期刊：
影响因子：
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通讯作者：
H. J. Harper
中科院分区：
文献类型：
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作者：
H. J. Harper
Valmari（8）建议使用0.5 N NaCl溶液从土壤中提取氨，因为他发现这种处理方法产生的氨与稀HCl提取法一样多，而且在大多数情况下，盐提取物中的有机氮含量远低于酸提取物。Temple（7）使用了1%的CuSO溶液从土壤中提取氨。Valmari和Temple都通过与MgO蒸馏从土壤提取物中释放氨。
Valmari (8) recommended the use of a 0.5 N NaCl solution for the extraction of ammonia from soils since he found that this treatment gives as much ammonia asis secured by dilute HCl extraction, and that the amount of organic nitrogen in most cases is much less in the salt extract than in the acid extract. Temple (7) has used a 1 per cent CuSO, solution to extract the ammonia from the soil. Both Valmari and Temple liberate the ammonia from the soil extracts by distillation with MgO.