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地下水中挥发性有机物的吹扫捕集-气相色谱-质谱法测定
吹扫捕集 气相色谱-质谱法 地下水 挥发性有机物
2014/6/13
建立了吹扫捕集-气相色谱-质谱法同时测定地下水中卤代烃类、苯系物、氯代苯类等20多种挥发性有机物的方法。对吹扫捕集条件、气相色谱条件和质谱条件进行优化,并对实际水样进行测定。方法检出限为0.03~0.28 μg/L,基体加标回收率为88.8%~111.0%,精密度(RSD,n=7)为2.21%~5.31%。方法准确,灵敏可靠,可满足地下水中痕量挥发性有机物的分析要求。
土壤样品中有机磷农药的加速溶剂萃取-气相色谱测定
加速溶剂萃取 气相色谱法 有机磷农药 土壤
2014/6/13
建立加速溶剂萃取提取土壤样品中13种有机磷农药残留,经Carb柱净化、Rtx-OPP2大口径毛细管柱分离、气相色谱-火焰光度检测器检测。方法仪器检出限在0.67~1.50 ng/mL,线性范围在0.67~600 ng/mL,相关系数在0.9994~0.9999。模拟土壤样品和实际土壤样品基体加标回收率分别在54.3%~106%和60.7%~133%,方法精密度(RSD,n=5)在2.2%~9.9%...
国内外在流体包裹体激光拉曼光谱研究方面取得了大量的成果。本文回顾了流体包裹体激光拉曼光谱分析技术的发展历史，介绍了流体包裹体激光拉曼光谱技术定性和定量分析的原理和方法，指出了该技术存在的问题及未来研究方向。流体包裹体激光拉曼光谱分析主要受到样品、荧光、同位素、光化学反应、水溶性物质信号弱、气相水及水合物、子矿物等因素的影响。由于用来进行定量分析的拉曼散射截面参数明显受到压力影响，加上峰面积计算不规...
数字地球：10年发展与前瞻
数字地球 空间信息 共享平台
2009/11/10
数字地球是20世纪末期问世的定量化研究地球的一个新的战略方向，是集空间科技、信息科技、地球科学等于一体的交叉学科领域。描述了数字地球的缘起和10年发展历程、概念模型与技术框架、科学与商业共享系统，多层次多学科应用领域和包括国际数字地球会议、学会、学报在内的学术平台的建设。进一步指出数字地球的重要作用与巨大的发展潜力，提出构建数字地球科学平台的设想。
Application of local singularity in prospecting potential oil/gas Targets
local singularity potential oil/gas Targets
2009/11/3
Together with generalized self-similarity and the fractal spectrum, local singularity analysis has been introduced as one part of the new 3S principle and technique for mineral resource assessment bas...
Geological mapping in Latvia:from useful minerals and structures to georesources
Geological mapping useful minerals georesources
2009/10/21
Traditional geological mapping in Latvia was initiated in the 1930s. Basic geological mapping, however, started just after the Second World War and thus provides a very simplified picture about geolog...
Natural stone assessment with ground penetrating radar
natural stone ground penetrating radar GPR rapakivi granite soapstone
2009/10/21
The usability of ground penetrating radar in quality assessment of natural stone deposits was tested in porphyritic granite and soapstone. The main interest was to evaluate how the soundness, fracturi...
Surface weathering of rapakivi granite outcrops–implications for natural stone exploration and quality evaluation
natural stone dimension stone weathering rapakivi granite exploration Finland
2009/10/21
Implications of surface weathering of rapakivi granite outcrops for natural stone evaluation were studied in the Wiborg rapakivi granite batholith in southeastern Finland. The study was performed as f...
Utility of Ground-penetrating Radar in Near-surface,High-resolution Imaging of Lansing-Kansas City (Pennsylvanian) Limestone Reservoir Analogs
Ground-penetrating Radar Near-surface High-resolution Imaging
2009/10/21
High-resolution ground-penetrating radar (GPR) is a subsurface imaging tool that can extend results gained from studies of reservoir-analog outcrops and add detailed information about reservoir analog...
The Relationship Between Geology and Landslide Hazards of Atchison,Kansas,and Vicinity
Relationship Geology Landslide Hazards
2009/10/20
Landslides along the Missouri and Kansas rivers will affect existing structures and potential development in the Kansas City metropolitan area. A pilot landslide-mapping project was conducted in the v...
Trace fossil Artichnus pholeoides igen. nov. isp. nov. in Eocene turbidites,Polish Carpathians:possible ascription to holothurians
Artichnus pholeoides Holothuroidea Apodida Turbidites Carpathians
2009/10/20
A hitherto unknown trace fossil was found in some abundance in turbidites of the Polish Outer Carpathians.The occurrence is within the Hieroglyphic Beds of the Silesian Nappe, within the Szczyrzyc Syn...
为得到适用于土体的热导率模型，利用软件将土样扫描电镜图片（反映土体的真实结构）二值化，采用瞬态传热分析方法对土体进行二维传热分析，通过ANSYS模拟土体并分析得出土体热导率。并且将数值分析结果与实测结果进行对比，发现两者间误差较小，说明该方法能较精确地得到土体热导率，为土体热导率理论模型的建立提供了一种新方法。在此基础上，对粉砂、粉土及粉质粘土的热导率进行研究，发现土体热导率随孔隙率的增大而减小，...
含矿热液蚀变带是成矿作用发生的重要标志之一，它作为矿产资源快速评价和定位预测的一个主要参数，在遥感地质找矿中具有重要意义。本文在分析干旱区ETM遥感影像地物识别所依据的光谱特征的基础上，提出一种基于小波自适应增强及主分量分析相结合的蚀变遥感异常信息提取方法，结合MATLAB编程软件和ERDAS 8.6遥感图像处理软件进行蚀变信息提取试验，并分别与传统的基于波段选择的主成分提取法以及基于主成分分析和...
川西坳陷上侏罗统蓬莱镇组水岩相互作用研究
成岩作用 水-岩作用 储层预测 川西
2009/8/27
根据川西坳陷上侏罗统中段蓬莱镇组储层的成岩作用具有长石溶解,硅质和方解石胶结的特点,应用GWB软件分析各井矿物的溶解和沉淀,得到平面等值线图,并对蓬莱镇组有利储集相带进行了预测。研究结果表明:计算得到的长石、方解石含量等值线图与实际测量得到的长石、方解石含量等值线图的变化规律一致,说明所选的模拟条件可信;影响本区矿物溶解与沉淀的主要因素是长石含量、地温和pH值;孝泉和新场地区地温低、长石含量中等、...