【摘要】 空气──乙炔火焰原子吸收测土壤全钙，由于干扰因子多，准确度欠佳。土壤经硝酸──氢氟酸──高氯酸消煮后，加入氯化　和三乙醇胺，空气─乙炔火焰原子吸收法测定，准确度有较大提高，优于加氯化　、氯化　和氯化钠两种方法。更多还原

【Abstract】 When using air-acetylene flamde atomic spectrometry（AAFAS） to analyze the total calcium in soil,the accuracy is not good, because of having many interference factors Boiling the soil in HAO₃-Hf-HClO₄,then added LaCl3 and（HOCH₂CH₂）₃N and analyze the total Caloium in soll with AAFAS.This method greatly improved the accuracy and are superior to another two methods with adding LaCl₃ and LaCl₃+NaCl.更多还原