逐级提取,sequential extraction英语短句,例句大全

逐级提取,sequential extraction
sequential chemical extraction逐级化学提取
1.The partitioning of several metal elements in lignites from Xilinguole League was investigated using five-step sequential chemical extraction procedures.应用 5步逐级化学提取研究了褐煤中多种金属元素的存在形态 ,并用电感耦合等离子体原子发射光谱 (ICP OES )法测定了整个提取过程中金属元素的浓度 ,结果表明 ,应用 5步逐级化学提取法可以有效地定量研究褐煤中金属元素的形态分布。
2.Experimental results demonstrate that sequential chemical extraction procedure is efficient in determining the speciation of trace elements in coal quantitatively.应用逐级化学提取法对3种典型煤进行浸提,根据易挥发痕量元素不同形态的溶解度,将煤中砷、汞、硒分为可交换态、硫化物结合态、有机物结合态和残渣态。
3)sequential chemical extract逐级化学提取
1.The occurrence of hazardous elements such as Hg,Ni,Zn,Mn,Cr,and V in Heshan high organosulfur coal formed in sedimentary environment of restricted carbonate platform was studied using sequential chemical extract.采用逐级化学提取方法,研究了广西合山超高有机硫煤中Hg,Ni,Zn,Mn,Cr,V等有害元素赋存状态。
2.The occurrence of trace arsenic in two bituminous coals and three anthracite coals was investigated using five step sequential chemical extract method.应用５步法逐级化学提取研究了２个烟煤和３个无烟煤样品中微量Ａｓ（０。
3.The sequential chemical extraction method is put forward to determine the occurrence modes of chlorine in coal.评述了煤中氯的研究现状，用仪器中子活化分析方法测定了中国４５个晚古生代全层煤样氯的质量分数，提出了煤中氯的逐级化学提取方法。
4)sequential extraction procedure逐级提取流程
1.One five-stage sequential extraction procedure has been applied for element composition and species in coal fly ash, indoor aerosol, outdoor aerosol, and aerosol supplied by International Atomic Energy Agency (IAEA).应用化学逐级提取流程对国际原子能机构(简称IAEA)气溶胶、室内和室外气溶胶、煤飞灰中元素的组成和化学种态进行了分析,应用仪器中子活化法测定了各种态中元素的含量,计算出元素在各种态中的分配比例。
5)step by step concentration逐级提浓
6)sequential extraction method逐步提取法
1.The soil polluted by heavy-metal was selected as the soil samples and added NaOH solution,CaO solid,Na2S solution,Na2CO3 solid, C9H7NO solution,and different chemical forms of Pb were extracted with sequential extraction method.以被重金属污染的农田土壤为样品,分别加入NaOH溶液、CaO固体、Na2S溶液、Na2CO3固体、C9H7NO溶液作为改良剂,采用逐步提取法对土壤中重金属Pb的相态进行浸提和萃取,采用原子吸收光谱法测定提取液中每种形态铅的浓度;最后分析了土壤中Pb在不同的实验环境下的含量。