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| Disposal of Waste in Cement Kilns-Determination Development of Selenium by Atomic Fluorescenece Spectrometry |
1.Tianjin Cement Industry Design and Research Institute Co., Ltd. 2. Sinoma Technology & Equipment Group Co.,Ltd.Environmental Protection Subbranch
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Abstract This artical developed determination method of selenium in solid waste of cement kilns by using atomic fluorescence spectrophotometer. It's adopted reverse aqua regia and boiling water bath as digestion system,10%HCl as carrier fluid,0.4%KOH and 1.2%KBH4 as reducing agent,K3[Fe(CN)6] as masking agent to eliminate interference of various ions. Also has optimized instrument conditions,and explored the detection limit,accuracy,precision and recoveries of samples.The detection limit of this method is 0.04μg/L,relative standard deviation is 3.0%~10.1% and recovries in sludge is 82.8%~102.5%.
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Received: 31 July 2013
Published: 28 May 2018
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