【摘 要】
：
海泡石是具有层状结构的含水富镁硅酸盐黏土矿物,其中无机元素含量是揭示其成矿物质来源、成矿流体性质和矿床成因的重要依据,通常采用电感耦合等离子体发射光谱/质谱法(ICP-OES/MS)进行测定,等离子体(ICP)的高温激发会产生成大量谱线干扰,维持ICP稳定工作需使用高纯氩气,持续供气对于偏远矿区海泡石的检测还将面对气体采购和运输不便的问题.本文基于微波等离子体原子发射光谱(MP-AES)的低温激发技术减少光谱干扰,建立了准确测定偏远矿区海泡石中主量元素Mg、Al、Ca、Fe、K、Na和微量元素Cu、Zn、
【机 构】
：
湖南工学院材料科学与工程学院,湖南衡阳421002;长江师范学院材料科学与工程学院,重庆涪陵408100
论文部分内容阅读
海泡石是具有层状结构的含水富镁硅酸盐黏土矿物,其中无机元素含量是揭示其成矿物质来源、成矿流体性质和矿床成因的重要依据,通常采用电感耦合等离子体发射光谱/质谱法(ICP-OES/MS)进行测定,等离子体(ICP)的高温激发会产生成大量谱线干扰,维持ICP稳定工作需使用高纯氩气,持续供气对于偏远矿区海泡石的检测还将面对气体采购和运输不便的问题.本文基于微波等离子体原子发射光谱(MP-AES)的低温激发技术减少光谱干扰,建立了准确测定偏远矿区海泡石中主量元素Mg、Al、Ca、Fe、K、Na和微量元素Cu、Zn、Mn、Pb含量的分析方法.利用硝酸-盐酸-氢氟酸混合酸对海泡石进行微波消解,避免了样品处理过程中分析元素的损失,加快了样品处理速度,同时提高了样品溶液的稳定性.通过选择各元素光谱线的分析波长,并利用快速线性干扰校正(FLIC)技术校正光谱干扰,以Lu为内标元素校正基体效应,提高了灵敏度和准确度.各元素的检出限为0.19 ～ 14.6μg/L.海泡石国家标准物质(GBW07138)各元素测定值与认定值的相对误差在-5.0％ ～6.7％之间.本方法具有检出限低、线性范围宽、结果准确等优点;MP-AES采用自带的氮气发生器为等离子体提供氮气作为工作气,无需引入复杂气体,提高了分析效率,尤其适用于气体采购和运输不便的偏远矿区.
其他文献
This paper focuses on the sea-surface weak target detection based on memory-fully convolutional network (M-FCN) in strong sea clutter. Firstly, the constant false alarm rate (CFAR) detection method utilizes a low threshold with high probability of false a
Ultra-wideband (UWB) through-wall radar has a wide range of applications in non-contact human information detec-tion and monitoring. With the integration of machine learning technology, its potential prospects include the physiological monitoring of patie
Fructose metabolism and fructose kinase KHK-C/A are key factors in the development of lipid oversynthesis-promoted metabolic disorders and cancer.Here,we summarize and discuss the current knowledge about the specific features of fructose metabolism and th
The space partitioning algorithm based on the round-ing and addressing operations has been proved to be an effi-cient space partitioning algorithm with the potential for real-time calculation. An improvement on this kind of space partitioning al-gorithms
为了获取电气设备的实时状况,提高设备的使用寿命,提出一种基于部件模型的电气设备参数动态测量算法.通过分析电气设备的遮挡情况,挑选部件区域,利用合成图像模块内的纹理块、轮廓块、颜色块以及平滑度块构建部件模型,凭借迭代压缩法将模型划分成各不相同的小图像块.学习小图像块间的旋转变换与尺度,获得部件模型拓扑架构,分析电气设备参数测量流程,同时将电气设备参数测量问题转换成谐振频率测量,以此缩减参数计算量.最后通过功率衡量电能,参考有效值的定义,测量来自变频电源的频率设定值与谐振频率,获得电气设备的具体参数.实验证明
Space-based optical (SBO) space surveillance has at-tracted widespread interest in the last two decades due to its considerable value in space situation awareness (SSA). SBO ob-servation strategy, which is related to the performance of space surveillance,
Iterated local search (ILS) is used to construct the op-timal experimental designs for multi-dimensional constrained spaces, in which the inner loop is based on the stochastic co-ordinate-exchange (SCE) algorithm. Every time a local optimal solution is fo
Recent advances in electronics have increased the complexity of radar signal modulation. The quasi-linear fre-quency modulation (quasi-LFM) radar waveforms (LFM, Frank code, P1?P4 code) have similar time-frequency distributions, and it is difficult to ide
应用电感耦合等离子体质谱法(ICP-MS)分析化探样品中的痕量银,通常在标准模式下用干扰校正法或动能歧视模式进行测定.银的两个稳定同位素均受锆和铌的氧化物或氢氧化物的质谱干扰,对于干扰元素锆、铌含量较高而银含量低的样品,测定误差较大,需要将干扰元素与银分离.本方法采用硝酸、氢氟酸、高氯酸消解样品,浓盐酸复溶提取,加入磷酸使大部分溶出的干扰元素锆、铌转化为难溶的磷酸盐化合物,通过沉淀与待测元素银分离.ICP-MS测定时以103Rh为内标,用90 Zr16O+同质量数的同位素106pd间接校正91Zr16O+
An integrated simulation system for solar sail space-craft with individually controllable elements (SSICE) is investi-gated in this paper, including the modelling of power manage-ment, thermal control, attitude control, umbra prediction, and or-bit predic