【摘要】 本文研究了降低煤灰份中微量和痕量元素摄谱分析检测限的途径；考察了氯化物、氟化物、溴化物、碳酸盐、氧化物及炭粉、硫粉十七种光谱缓冲剂对谱线强度的影响。ＮａＣｌ－ＮＨ４Ｆ对谱线强度有显著增强作用，确定ＮａＣｌ∶ＮＨ４Ｆ的最佳配比为１∶２．选择钴、锡为内标，对电流、极距、曝光时间通过正交试验进行了最佳选择，对缓冲剂作用进行了讨论更多还原

【Abstract】 method for spectrographic determination of trace and micro-amount elements in coal ash with improved detection limit has been worked out,in which the effect of chlorides, fluorides, bromides, carbonates, oxides, carbon powder and sulphur powder etc. seventeen buffer substance on the spectral-line intensity has been investigated. In the presence of NaC1-NH4F,the spectral-line intensity of analytical elements can be increased. The Co and Sn is selected as internal standard elements. The optimization for parameter of electric current intensity, analytical gap, time of exposure has been attained by the multi-factor experiments. Also the behavior of the buffer substance is discussed.更多还原