Abstract：With the increase of awareness in environmental protection, the environmental requirements of imported coal are gradually put on the agenda. The determination of arsenic, phosphorus and chlorine is one of the major items. Boric acid was selected as the binding agent. It was directly mixed with coal samples for preparation by pressed powder pellet method. The content of arsenic, phosphorus and chlorine in coal was determined by X-ray fluorescence spectrometry (XRF). The prepared sample exhibited high strength. The determination range of proposed method was 0.000 5%-0.005 1% for arsenic, 0.015%-0.11% for phosphorus and 0.007%-0.092% for chlorine. The relative standard deviation of method was 6.2%, 1.7% and 2.5% for arsenic, phosphorus and chlorine, respectively. The proposed method was verified using the standard sample of coal. The found values were in good agreement with the reference values.The found results of arsenic were compared with those obtained by atomic fluorescence spectroscopy,which showed good consistence. It could be applied to the rapid determination of arsenic, phosphorus and chlorine in the imported coal.
龙小玲, 邓晃, 李治良,等. 原子荧光测定煤中砷、汞的溶矿方法对比及形态分析研究[J]. 煤质技术, 2009 (6): 1-4. LONG Xiao-ling, DENG Huang, LI Zhi-liang, et al. Dissolve methods comparison and formation analysis in determination of arsenic and mercury in coal by atomic fluorescence spectrometry[J]. Coal Quality Technology, 2009(6): 1-4.
宋义, 郭芬, 谷松海. X射线荧光光谱法同时测定煤中砷硫磷氯[J]. 岩矿测试,2006,25(3): 285-287. SONG Yi, GUO Fen, GU Song-hai. Determination of As, P, S, Cl in coal by X-ray fluorescence spectrometry[J]. Rock and Mineral Analysis,2006,25(3): 285-287.
[7]
严家庆,杨霖,张剑鸣. X射线荧光光谱法测定煤中氯[J]. 煤质技术,2009(6):22-23. YAN Jia-qing, YANG Lin, ZHANG Jian-ming.The determination of chlorine in coal by X-ray fluorescence spectrometry[J]. Coal Quality Technology,2009(6):22-23.
[8]
高运川, 高勤芬, 孙明星,等. 电感耦合等离子体-质谱同时测定煤、焦中砷、溴、碘[J]. 分析化学, 2007,35 (8): 1175-1178. GAO Yun-chuan, GAO Qin-fen, SUN Ming-xing, et al. Simultaneous determination of arsenic, bromine, iodine in coal and coke by inductively coupled plasma-mass spectrometry with microwave digestion[J]. Chinese Journal of Analytical Chemistry, 2007, 35(8): 1175-1178.
[9]
皮中原. 流动注射-氢化物发生-原子吸收光谱法测定煤中砷[J]. 煤炭学报, 2004, 29(2): 234-237. PI Zhong-yuan. Mensuration of trace As in coal by flow injection-hydride generation-atomic absorption spectrometry[J]. Journal of China Coal Society, 2004, 29(2): 234-237.
