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1.
《核地知与行》2005,(2):10-13
今年上半年,全局实现工业产值18265万元,销售收入17338万元,增加值2908万元,利润1113万元,分别为年度计划的54%、53.7%、64.1%和58.7%,同比分别增长8.7%、16%、25.5%和154.3%;但增长幅度有不同程度下降,分别下降15、38、17和76个百分点。其中,瑞丰有限责任公司所属企业实现工业产值8061万元,增加值2376万元,利润1012万元,分别比去年同期增长22.7%、27.7%、39.1%和200.2%。从上述指标看,国家宏观经济调控和局对经济发展速度的调整,使产品业的发展由速度增长逐步转向效益增长。  相似文献   

2.
《湖南地质》2009,(8):38-39
2009年上半年,湖南省土地供应总量为2511.545公顷,同比减少21.22%,其中第一季度供应总量为1152.45公顷,第二季度供应总量为1359.09公顷。上半年,招拍挂出让工矿仓储用地面积为722.34公顷,占工矿仓储用地出让总面积的94.49%,商服用地招拍挂比例为92.66%,住宅用地为83.05%,其他用地为60.13%。土地出让均价持续降低,为453.43元/平方米,同比下降了23.82%,招拍挂卅让均价为436.37元/平方米,同比下降了28.79%。商服用地H;让均价为638.73元/平方米,较去年同期有一定上涨,但是相对于2008年下半年则下降了10.38%;住宅用地卅让均价为643.91元/平方米,分别较去年同期和去年下半年下降17.48%和14.71%,降幅明湿;工矿仓储用地出让价格分别较去年同期和下半年增长4.42%和6.26%。  相似文献   

3.
在原子荧光光谱法传统样品前处理的基础上,提出了悬浮液进样技术。用琼脂作为悬浮剂,水溶液作为校正曲线,对土壤标准样品和实际样品进行测定,结果令人满意,并且省去了冗长的样品化学前处理过程。检出限分别为砷0.33μg/L、锑0.13μg/L、硒0.06μg/L;相对标准偏差分别为:砷3.92%~6.32%、锑1.76%~3.11%、硒3.08%~5.54%;回收率分别为砷98.7%~105.7%、锑99.5%-103.3%和硒94.6%-107.2%。国家一级标准物质的测定结果与标准值相符,实际样品的测定值与传统消化法相比较,结果基本一致。  相似文献   

4.
酸分解试样,点滴麦勒膜制片,Ni元素作内标,使用X射线荧光光谱法同时测定金银标准样品中Au、Ag、Cu和Zn,分析范围为0.2%~100%。对于Au、Ag、Cu和Zn含量为83%、8.O%、6.2%、3.0%的试样,其R8D(n=6)分别为0.1%、1.1%、0.9%和1.1%。  相似文献   

5.
陈永群  詹秀春 《岩矿测试》1994,13(3):211-213
酸分解试样,点滴麦勒膜制片,Ni元素作内标,使用X射线荧光光谱法同时测定金银标准样品中Au,Ag,Cu和Zn,分析范围为0.2%-100%。对于Au,Ag,Cu和Zn含量为83%,8.0%,6.2%,3.0%的试样,其RSD(n=6)分别为0.1%、1.1%、0.9%和1.1%。  相似文献   

6.
武朝晖  康椰熙 《铀矿地质》1995,11(3):177-184
本文提出了一种用XRF测定复杂地质样品全分析中其它特殊成分的分析方法。本方法采用熔融法制备样片,个别元素采用压片法制样,用散射内标法与经验α系数相结合的方法进行基体效应的校正。各氧化物的测定下限分别为:SrO0.0030%,ZrO20.0030%,PbO0.0036%,CuO0.0042%,NiO0.0027%,ZnO0.0021%,Cr2O30.0069%,BaO0.0048K,As2O30.0015%,Nb2O50.0048%,V2O50.0051%,ThO20.0036%,U3O80.0030%,其分析结果的精密度和准确度较好,能够满足地质研究工作的需要。  相似文献   

7.
苏北中生代碰撞后花岗岩的地球化学特征及其地质意义   总被引:4,自引:2,他引:4  
苏鲁超高压变质带南部的花岗岩体为中生代的Ⅰ型花岗岩,侵入到围岩片麻岩中,属碰撞后花岗岩。SiO2含量为56.15%~66.67%,Na2O含量为3.58%~4.54%,K2O含量为2.16%~4.58%,Alk为6.93~8.62%。里特曼指数为2.7~3.1,属于高钾钙碱性岩石。δEu=0.76~0.82,为弱的负铕异常。围岩片麻岩SiO2含量较高,为70.55%~77.28%,Na2O为3.12%~5.39%,K2O为1.78%~6.22%,δEu为0.38~0.59,具有明显的负铕异常。花岗岩与片麻岩的地球化学特征有明显差别,表明两者在成因上关系不大,花岗岩的源岩为未出露地表的中下地壳岩石。拆沉模式可较好地解释碰撞后花岗岩与超高压变质岩的“共生”现象。  相似文献   

8.
铋砷黝铜矿在中国的发现与研究   总被引:1,自引:0,他引:1  
铋砷黝铜矿产于广东陆丰中低温热液黄铁矿矿床中,呈它形粒状嵌布在黄铁矿内,粒径0.05~0.22mm,与黄铜矿、针硫铋铝矿共生。反射免呈灰色微带蓝色,均质性。显微硬度Hv=295.5kg/mm2。电子探针成分分析(平均值)为:S24.4%,Cu38.25%,As13.03%,Bi17.人83%,Sb0.48%,Zn2.39%,Fe2.13%,Te1.47%,化学式为:Cu10(Fe0.65Zn0.63Cu0.49)1.77(As2.97Bi1.46Sb0.07)4、50(S12.8Te0.20)13。X射线粉晶衍射强线:2.95(10),2.55(3),1.866(5),1.727(4),1.041(5)。晶胞参数α=1.0218nm。  相似文献   

9.
发射光谱法测定勘查地球化学样品中银硼锡钼铅   总被引:21,自引:13,他引:21  
张雪梅  张勤 《岩矿测试》2006,25(4):323-326
以K2S2O7、NaF、Al2O3和炭粉为缓冲剂,Ge为内标,电弧发射光谱法测定勘查地球化学样品中Ag、B、Sn、Mo、Pb。方法检出限为Ag0.013μg/g、B0.83μg/g、Sn0.23μg/g、Mo0.073μg/g、Pb0.37μg/g。方法精密度(RSD,n=12)为Ag4.2%~11.3%、B3.2%~6.5%、Sn2.6%~7.1%、Mo2.9%~6.3%、Pb1.57%~5.18%。测定了国家一级地球化学标准物质,结果与标准值相符。  相似文献   

10.
以碳酸钙共沉淀卤水中的痕量Cu、Pb、Zn,用火焰原子吸收光谱法测定。对试剂的加入量、富集时间、酸度等影响因素进行了实验,选择了最佳的共沉淀条件。方法已用于卤水分析,加标回收率为Cu94.0%~97.6%、Pb94.0%。102%、Zn93.4%-102%。对卤水样品6次测定的相对标准偏差为Cu0.49%、Pb0.79%、Zn1.85%。  相似文献   

11.
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414.  相似文献   

12.
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14.
正1 Introduction Geological studies established on several sections in Lanping-Simao basin have shown that the salt-bearing strata of Mengyejing formation(Yunlong Fm.in Lanping basin)are constituted by an alternation of salt layers and interbedded facies.The latter consists mainly of mudstones,and mudstone-rich conglomerate.The mineralogy and geochemistry of salt-bearing beds and  相似文献   

15.
正On 22nd April 2014,with the approach of the 45th World Earth Day,China’s Ministry of Land and resources issued the status of China’s mineral resources in 2013.The first task of the prospecting breakthrough strategy action implemented in the last five years has been completed,and China’s security capacity for mineral resources has been significantly improved.In the  相似文献   

16.
正There are more than 700 salt lakes with area of more than 1km2 on the Qinghai-Tibet Plateau of China.In recent years,an oilfield brine was also found in the Nanyishan Section of Qaidam Basin in the Qinghai-Tibet  相似文献   

17.
正1 Introduction Physical and numerical models are constructed to investigate the evolution and mechanism of salt migration driven by tectonic processes.In recent years,we have designed and ran series of models to simulate salt  相似文献   

18.
正The study of Cretaceous-Palaeogene salt-bearing strata of the Khorat Basin Laos and the Lanping-Simao Basin in Yunnan,China has an great significance not only in explaining the basin evolution and the genesis of potash  相似文献   

19.
正Potash is one of the long-term scare deposits in China,and potash prospecting has long been listed as a key brainstorm project for our nation and geological prospecting units.There have been considerable studies in search for potash deposits in the Kuqa depression of the Tarim basin(Jackson et al.,1991;Gemmer et al.,2004;Vendeville,2005;Vendeville and Jackson,1992a,1992b),  相似文献   

20.
正1 Introduction Qaidam Basin in Qinghai,including 43 salt lakes with multiple dominant mineral such as potassium,magnesium,lithium etc.,is the most intensive distribution of Saline  相似文献   

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