长江科学院院报2019，Vol.36Issue(12)：139-143,5.DOI:10.11988/ckyyb.20180426
粉煤灰中残留氨检测方法的影响因素分析
Methods of Measuring Residual Ammonia in Fly Ash:Influence Factors and Comparison
摘要
Abstract
The residual ammonia in fly ash was measured by Nessler’s reagent spectrophotometry method, neutral-ization titration method, and ammonia-sensitive electrode method respectively in this paper. The main influence factors and their values were determined and the correlation among results of these three methods were investigated in detail. Results showed that the main influence factors of Nessler’s reagent spectrophotometry method were ex-traction solvent ( best as 0. 05 mol/L H2SO4) , liquid ratio ( optimum as 1 ∶ 10) , and extraction time ( optimum as 30 min) ; the main influence factors of neutralization titration method were absorption solution( best as 0. 05mol/L H2SO4) , sodium hydroxide content ( optimum as 0. 2 g) and distillation time ( optimum as 30 min) ; the main influence factors of ammonia-sensitive electrode method were extracting solution ( best as deionized water) and stir-ring time (optimum as [10, 25] min) . In addition, the results of the three methods are of good correlation.关键词
粉煤灰/残留氨/检测方法/影响因素/纳氏分光光度法/中和滴定法/氨气敏电极法/相关性Key words
fly ash/residual ammonia/measuring method/influence factor/Nessler’s reagent spectrophotometry/neutralization titration method/ammonia-sensitive electrode method/correlation分类
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殷海波,黄明辉,张锐,王万翔,刘倩..粉煤灰中残留氨检测方法的影响因素分析[J].长江科学院院报,2019,36(12):139-143,5.基金项目
中央级公益性科研项目(CKSF2017032/GC,CKSF2017034/GC) （CKSF2017032/GC,CKSF2017034/GC）
