本文選題：ICP-AES　切入點(diǎn)：硫　出處：《光譜學(xué)與光譜分析》2017年05期 　論文類型：期刊論文

【摘要】：SO2是大氣主要污染物,與霧霾的形成有直接關(guān)系,煙氣脫硫是保護(hù)環(huán)境、減少霧霾的有效措施。磷礦漿法煙氣脫硫是一種以磷礦漿為吸收劑的新型脫硫方法。采用電感耦合等離子體原子發(fā)射光譜(ICPAES)法測(cè)定磷礦漿煙氣脫硫劑固液相(磷礦粉、磷礦漿脫硫液和脫硫渣)中硫含量。在選定了較靈敏的硫分析線后,探討了ICP光譜儀工作條件對(duì)分析結(jié)果的影響,同時(shí)研究了樣品預(yù)處理方法以及共存元素對(duì)硫測(cè)定結(jié)果的影響。分別用三種不同的方式對(duì)磷礦粉、磷礦漿脫硫液和脫硫渣樣品進(jìn)行前處理,確保樣品溶解完全。選用181.973nm光譜線為分析線,避免共存元素的光譜干擾。選擇儀器的入射功率為1 300W,觀測(cè)高度為12mm,霧化氣流量為0.65L·min-1,泵進(jìn)樣量為1.5mL·min-1。在光譜儀最佳分析條件下,利用該方法測(cè)定磷礦粉、磷礦漿脫硫液及脫硫渣中硫的含量,其檢出限為0.000 38%,加標(biāo)回收率在89.5%~104.5%之間,相對(duì)標(biāo)準(zhǔn)偏差(RSD)≤2.30%,同時(shí)與硫酸鋇重量法進(jìn)行對(duì)比實(shí)驗(yàn),結(jié)果基本吻合,相對(duì)偏差≤3.88%,該方法簡(jiǎn)便快捷,精密度和準(zhǔn)確度較高,適用于磷礦漿脫除煙氣SO2的科研及生產(chǎn)中。
[Abstract]:SO2 is a major pollutant in the atmosphere, which is directly related to the formation of haze. Flue gas desulfurization (FGD) is to protect the environment. It is a new desulfurization method with phosphate rock slurry as absorbent. The method of inductively coupled plasma atomic emission spectrometry (ICP-AES) is used to determine the solid liquid phase (phosphate rock powder) of flue gas desulfurization agent of phosphate rock slurry. Sulfur content in desulphurization solution and slag of phosphate rock slurry. After selecting a sensitive sulfur analysis line, the influence of working conditions of ICP spectrometer on the analysis results was discussed. At the same time, the sample pretreatment method and the influence of coexisting elements on the sulfur determination results were studied. The samples of phosphate rock powder, phosphate rock slurry desulfurization solution and desulfurized slag were pretreated in three different ways. The sample is dissolved completely. The 181.973nm spectral line is chosen as the analysis line to avoid the spectral interference of coexisting elements. The incident power of the instrument is 1 300W, the observation height is 12mm, the atomization gas flow rate is 0.65L min-1, and the pump injection quantity is 1.5mL min-1. Under the optimum analytical conditions of the spectrometer, This method was used to determine the sulfur content in phosphate rock powder, phosphate slurry desulfurization solution and desulphurized slag. The detection limit was 0.000 and the recovery rate was between 89.55% and 104.5%. The relative standard deviation (RSD) was less than 2.30. The results were in good agreement with the barium sulfate gravimetric method. The relative deviation is less than 3.88. The method is simple, rapid, accurate and accurate. It is suitable for the research and production of SO2 removal from flue gas by phosphate slurry.
【作者單位】： 省部共建復(fù)雜有色金屬資源清潔利用國(guó)家重點(diǎn)實(shí)驗(yàn)室;云南省有色金屬真空冶金重點(diǎn)實(shí)驗(yàn)室;真空冶金國(guó)家工程實(shí)驗(yàn)室;
【基金】：教育部“創(chuàng)新團(tuán)隊(duì)發(fā)展計(jì)劃”項(xiàng)目(IRT1250) 國(guó)家自然科學(xué)基金青年基金項(xiàng)目(51304096) 云南省應(yīng)用基礎(chǔ)研究自籌經(jīng)費(fèi)項(xiàng)目(2013FZ028)資助
【分類號(hào)】：O657.31;X754
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本文編號(hào)：1652474