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    Major element analysis of pyrogenic rock samples with 14 MeV neutron
    用14MeV中子活化分析火成岩样品中常量元素
    The activation analysis of major elements in meteorites by 14MeV neutron
    用14MeV中子活化分析陨石样品中的常量元素
    ATOMIC ABSORPTION DETERMINATION OF 15 MINOR AND MAJOR ELEMENTS IN MARINE AND ESTUARY SEDIMENTS
    海洋及河口沉积物中15种微量及常量元素的原子吸收分光光度法测定
    X-RAY FLUORESCENCE SPECTROMETRIC DETERMINATION OF MAJOR ELEMENT IN GEOLOGICAL MATERIALS WITH THEORETICAL αCOEFFICIENT METHOD
    理论α系数在X射线荧光光谱分析化探样品主量元素中的应用
    Determination of Major Elements in Soil by X-Ray Fluorescence Spectrometry
    土壤中常量元素的X射线荧光光谱测定
    MAJOR ELEMENT COMPOSITION AND CONTROLLING FACTORS OF SUSPENDED PARTICLES IN XIAMEN HARBOUR AND JIULONG RIVER ESTUARY
    厦门西港和九龙江口悬浮颗粒中主要元素含量及其控制因素的研究
    Determination of 12 Major Elements in Superalloy by Induc- tively Coupled Plasma Atomic Emission Spectroscopy
    应用ICP—AES测定耐热合金中12个元素
    Determination of Major Elements in Soils Using Fundamental Parameters by X-ray Fluorescence Spectrometry (XRF)
    基本参数法X射线荧光分析土壤样品中主量元素
    GEOGRAPHIC VARIATIONS OF MAJOR ELEMENTS FOR PERIDOTITIC XENOLITHS IN RELATION TO CRUST/LITHOSPHERE AGE AND THICKNESS IN EASTERN CHINA
    中国东部Ⅰ型地幔包体主要元素的区域性变化及其与地壳/岩石圈年龄、厚度的关系
    An analysis of major elements shows that these leucogranites belong to S-type with A/CNK being 1.1~2.14. From the muscovite monzo-leucogranites through muscovite-plagioclase leucogranites to Al2SiO5-bearing leucogranites, SiO2 contents increase and Al2O3, Na2O and K2O contents decrease.
    主量元素分析表明这3类脉体的A/CNK=1.1~2.14,属于S型花岗岩。 从白云母二长花岗岩脉→白云母斜长花岗岩脉→含Al2SiO5的淡色花岗岩脉,SiO2的含量增高,Al2O3、Na2O、K2O的含量降低。
    By contrast, the contents of other major elements, i.e. Al2O3, TiO2, MgO and MnO are extremely low (avg. 0.71%, 0.04%, 0.10% and 0.02%, respectively).
    TFe2O3和含量相对比较富集(平均含量3.32%),Al2O3、TiO2、MgO和MnO相对贫乏(平均含量分别为0.71%、0.04%、0.10%和0.02%)。
    Some major element ratios of Fe/Ti, (Fe+Mn)/Ti and Al/(Al+Fe+Mn) are 92.12 and 0.25 in average, respectively. Trace element ratios of Ti/V and U/Th are 4.57 and 4.09 in average, of which the U/Th ratio reached a maximum in the early Frasnian.
    常量元素Fe/Ti、(Fe+Mn)/Ti和Al/(Al+Fe+Mn)比值的平均值分别为91.65,92.12和0.25,微量元素Ti/V和U/Th比值的平均值分别为4.57和4.09,其中U/Th比值在弗拉斯期早期达到最大。
    The major elements of volcanic rocks geochemistry are characterized by lower in SiO2(42.95%~52.68%,average 47.52%),lower in K2O(0.06%~1.62%,average 0.53%),and highe in Na2O(1.53%~4.23%,average 2.76%). Rock series of volcanic rocks include alkaline and tholeiite series.
    万保沟群火山岩(Pt2w)在主量元素成分上表现为低SiO2(42.95%~52.68%,平均为47.52%)、低K2O(0.06%~1.62%,平均0.53%)和高Na2O(1.53%~4.23%,平均2.76%),火山岩中碱性系列与拉斑系列并存。
    The detection limits are 0.030 g/L for S,0.015 g/L for Cl,0.020 g/L for K and 0.008 g/L for Ca. The method has been applied to the determination of these major elements in high salinity brine samples.
    方法的分析精密度(RSD,n=l5)为0.97%~4.16%(除Ca外),检出限为S0.030 g/L、Cl 0.015 g/L、K 0.020 g/L和Ca 0.008 g/L。
    The results of the measurements are analyzed to explain the special behaviors of alkaline dust in relation to mineralogical and elemental compositions and their origin mainly as follows: 1) quartz, feldspar, carbonate and halite are identified as the most important minerals with the proportion of 54%, 28.3%, 4.4% and 2.7% respectively, 2) the major elements are Ca.
    结果表明:样品矿物成份主要是石英(54.9%)和长石(28.3%),其次为碳酸盐(4.4%)和氯盐(2.7%);
    The change cycles of major element in Salawusu River valley since 150 ka B.P.
    150 ka B.P.以来萨拉乌苏河流域主元素变动旋回
    CHARACTERISTICS OF MAJOR ELEMENTS OFSEDIMENTS IN CORE 97-37 FROM SOUTHERNSOUTH CHINA SEA AND ITS POTENTIALIMPLICATIONS TO PALEOENVIRONMENT
    南海97-37柱样的主元素特征及其潜在的古环境指示作用
    Major element characteristics of the alkali-rich intrusive rocks zone and distribution of the subzones in the north ern part of east Qinling, China
    东秦岭北部富碱侵入岩岩石化学与分布特征
    Rethink the Major Elements and Development of Regional Innovation Environment of Technology-based Industries
    高科技区域创新环境构成与发展再思考
    GEOCHEMICAL BEHAVIOR OF MAJOR ELEMENT OF LOESS IN WESTERLY AREA OF CHINA AND PALEOCLIMATIC IMPLICATIONS
    中国西风区黄土常量元素地球化学行为与古环境
 

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