新型氢化物发生技术—可移动还原床氢化物发生器：Ⅲ.作为毛细管区？…

发展了一种新型的氢化物发生装置－可移动还原床氢化物发生器。应用该技术可将经毛细管区带电泳分离之后的各种砷的化合物转换为相应的氢化物,然后再被引入到电感耦合等离子体发射光谱进行检测。对不同形态砷的不同化合物的ＣＺＥ分离条件进行了优化,包括缓冲溶液的ＰＨ值及及浓度,进样量等。ＣＺＥ－ＭＲＢＨＧ－ＩＣＰ－ＡＥＳ应用于４种砷化合物的定量测定,峰面积的ＲＳＤ（ｎ＝５）在１．９％－１１．７％。４种砷的浓度检出     

沉积型（贡溪式）重晶石矿床模式

沉积型（贡溪式）重晶石矿床模式车勤建（湖南省地质研究所，长沙４１０００７）ＡＭＥＴＡＬＬＯＧＥＮＩＣＭＯＤＥＬＦＯＲＳＥＤＩＭＥＮＴＡＲＹＧＯＮＧＸＩ－ＴＹＰＥＢＡＲＩＴＥＤＥＰＯＳＩＴＳ￥ＣＨＥＱｉｎｊｉａｎ（ＨｕｎａｎＩｎｓｔｉｔｕｔｅｏｆＧｅｏ...     

PROVENANCE ANALYSES OF LATE PALEOZOIC CLASTICS IN THE KAMUSTE AREA, THE JUAGGUR BASIN, XINJIANG

ＰＲＯＶＥＮＡＮＣＥＡＮＡＬＹＳＥＳＯＦＬＡＴＥＰＡＬＥＯＺＯＩＣＣＬＡＳＴＩＣＳＩＮＴＨＥＫＡＭＵＳＴＥＡＲＥＡ,ＴＨＥＪＵＡＧＧＵＲＢＡＳＩＮ,ＸＩＮＪＩＡＮＧＺｈａｎｇＸｉａｏｈｕｉＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ,ＣｈｉｎｅｓｅＡｃａｄｅ...     

GEOLOGICAL EVIDENCE OF MU US DESERT EVO-LUTION SINCE 0.5MAB.P.

ＧＥＯＬＯＧＩＣＡＬＥＶＩＤＥＮＣＥＯＦＭＵＵＳＤＥＳＥＲＴＶＯ－ＬＵＴＩＯＮＳＩＮＣＥ０．５ＭＡＢ．Ｐ．TXＧＥＯＬＯＧＩＣＡＬＥＶＩＤＥＮＣＥＯＦＭＵＵＳＤＥＳＥＲＴＥＶＯ┐ＬＵＴＩＯＮＳＩＮＣＥ０．５ＭＡＢ．Ｐ．ＳｕｎＪｉｍｉｎ，ＤｉｎｇＺｈｏｎ...     

DYNAMOMETAMORPHIC MINERALIZATION OF LALA COPER DEPPOSIT,HUILI,SICHUAN PROVINCE

ＤＹＮＡＭＯＭＥＴＡＭＯＲＰＨＩＣＭＩＮＥＲＡＬＩＺＡＴＩＯＮＯＦＬＡＬＡＣＯＰＥＲＤＥＰＰＯＳＩＴ，ＨＵＩＬＩ，ＳＩＣＨＵＡＮＰＲＯＶＩＮＣＥＺｈｏｕＹｏｎｇＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ，ＡｃａｄｅｍｉａＳｉｎｉｃａ，Ｂｅｉｊｉｎｇ１０００...     

SOME NEW OPINIONS ABOUT TRIASSIC GASTROPOD ASSEMBLAGES IN CHINA

ＳＯＭＥＮＥＷＯＰＩＮＩＯＮＳＡＢＯＵＴＴＲＩＡＳＳＩＣＧＡＳＴＲＯＰＯＤＡＳＳＥＭＢＬＡＧＥＳＩＮＣＨＩＮＡＰａｎＹｕｎｔａｎｇ（ＧｒａｄｕａｔｅＳｃｈｏｌ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ，Ｂｅｉｊｉｎｇ１０００３９）（Ｒｅｃｅ...     

MID-PROTEROZOIC METAMORPHIC ROCKS, METAMORPHISM AND CRUSTAL EVOLUTION IN THE WEST OF LIAONING PROVINCE

ＭＩＤ－ＰＲＯＴＥＲＯＺＯＩＣＭＥＴＡＭＯＲＰＨＩＣＲＯＣＫＳ,ＭＥＴＡＭＯＲＰＨＩＳＭＡＮＤＣＲＵＳＴＡＬＥＶＯＬＵＴＩＯＮＩＮＴＨＥＷＥＳＴＯＦＬＩＡＯＮＩＮＧＰＲＯＶＩＮＣＥＹｕＬｉａｎｇｊｕｎＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ,Ｃｈｉｎｅｓ...     

GENETIC SEQUENCES OF GOLD DEPOSITS IN EPICONTINENTAL OROGENC MINERALIZATION ZONE——THE TECTONIC-METAMORPHIC-MINEROGENIC BELT IN THE AILAOSHAN MOUNTAINS,YUNNAN PROVINCE,CHINA

ＧＥＮＥＴＩＣＳＥＱＵＥＮＣＥＳＯＦＧＯＬＤＤＥＰＯＳＩＴＳＩＮＥＰＩＣＯＮＴＩＮＥＮＴＡＬＯＲＯＧＥＮＣＭＩＮＥＲＡＬＩＺＡＴＩＯＮＺＯＮＥ———ＴＨＥＴＥＣＴＯＮＩＣＭＥＴＡＭＯＲＰＨＩＣＭＩＮＥＲＯＧＥＮＩＣＢＥＬＴＩＮＴＨＥＡＩＬＡＯＳＨ...     

METAMORPHOSED MICROCLASTIC ROCK-TYPE GOLD DEPOSITS IN CHINA

ＭＥＴＡＭＯＲＰＨＯＳＥＤＭＩＣＲＯＣＬＡＳＴＩＣＲＯＣＫＴＹＰＥＧＯＬＤＤＥＰＯＳＩＴＳＩＮＣＨＩＮＡＬｕＤｅｆｕＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ，Ｂｅｉｊｉｎｇ１０００２９ＷａｎｇＸｉｕｚｈ...     

TIDAL FLAT STORM DEPOSITS OF MIDDLE CAMBRIAN IN SHIMEN DISTRICT,HUNAN PROVINCE

ＴＩＤＡＬＦＬＡＴＳＴＯＲＭＤＥＰＯＳＩＴＳＯＦＭＩＤＤＬＥＣＡＭＢＲＩＮＩＮＳＨＩＭＥＮＤＩＳＴＲＩＣＴ，ＨＵＮＡＮＰＲＯＶＩＮＣＥTXＴＩＤＡＬＦＬＡＴＳＴＯＲＭＤＥＰＯＳＩＴＳＯＦＭＩＤＤＬＥＣＡＭＢＲＩＡＮＩＮＳＨＩＭＥＮＤＩＳＴＲＩＣＴ，ＨＵ...     

新型氢化物发生技术—可移动还原床氢化物发生器：Ⅱ.干扰及其应用

新型的氢化物发生技术－可移动还原床氢化物发生器可以实现微升级样品的测定而不需要对样品进行酸化和使用气－液分离器。应用ＭＲＢＨＧ－电感耦合等离子体发射光谱取得了同等质量的而不同形态的Ａｓ,Ｓｅ的相同信号强度,证明了在ＭＲＢＨＧ体系中氢化物元素之间的干扰得到消除,方法用于合金钢,富硒茶叶等实际样品的测定,标准加入的回收率在９３％－１１４％。     

氢化物发生及其在分析检测领域的应用

论述了氢化物发生的条件和普遍性及其在分析检测领域的应用,这些领域包括试样分解,分离富集,容量分析、比色分析、原子荧光光谱、原子吸收光谱、电感耦合等离子体原子发射光谱、电感耦合等离子体质谱等分析测试技术。     

不同氢化反应条件下原子发射光谱同时测定锗锡砷锑铋

研究了不同氢化反应条件下电感耦合等离子体原子发射光谱同时测定锗,,锡,砷,锑和铋的方法。主要对锗,锡的氢化反应酸度,缓冲溶液的选择,动态线性范围,氧化剂的选择,共存元素的干扰及其消除进行实验。方法经国家一级标准物质分析验证,结果与标准值基本相符。     

氢化物发生-原子荧光光谱法测定铜矿石中的砷锑铋

样品经王水溶矿分解,在氨水存在下,以Fe3+作共沉淀剂分离铜后,用氢化物发生-原子荧光光谱法测定铜矿石中的砷、锑、铋。方法检出限为砷0.19μg/g、锑0.052μg/g、铋0.049μg/g;精密度(RSD,n=10)为砷5.87%、锑7.58%、铋2.42%。     

Germanium Contents of Selected International Geostandards by Hydride Generation and ICP-AES.

Germanium in thirty-four SRM's was determined by hydride generation and ICP-AES after separation of germanium from the concomitant matrix into carbon tetrachloride, and finally back-extraction into water. This procedure permits the determination of 0.1 ppm of germanium in as small as 50 mg sample. The precision and accuracy of the method was established using Basalt BCR-1 as the most precisely determined standard available.     

Determination of Arsenic and Antimony in Eighty-Five Geochemical Reference Samples by Automated Hydride Generation and Electrothermal Atomic Absorption Spectrometry

The arsenic and antimony contents of 85 geochemical reference samples have been determined by atomic absorption spectrometry with hydride generation and heated quartz cell atomizer. The sample is decomposed with a mixture of perchloric, nitric and hydrofluoric acids and potassium permanganate solution; interferences are eliminated by addition of potassium iodide, aluminium chloride and ascorbic acid. The agreement between the present results and published data is fairly good.     

在线双管氢化AAS测定As,Sb和Bi的最佳条件

在线双管氢化AAS法是一种新的原子吸收氢化光谱法 ,具有简便、快速、灵敏度高和硼氢化钾用量少的优点。采用正交试验设计法对在线双管氢化AAS法测定低含量As、Sb和Bi的测定条件进行了系统的研究 ,确定了乙炔流量、燃烧器高度、硼氢化钾浓度和溶液酸度的最佳测定条件。在最佳条件下对实际样品土壤GSS -5、水系沉积物GSD -11、钨矿石GSO -W -1和GSO -W -2中As ,Sb ,Bi的含量进行了测定 ,测定的结果较准确 ,RSD <3 .2 6%。     

氢化物发生法测定地质样品中锡含量

主要根据锡元素特性,研究利用氢化物发生法测定地质样品中锡含量。该方法简便、快捷,不用分离干扰元素,大大提高了分析测试速度,且通过国家一级标样的分析能够满足0.001%～1.00%含量的锡矿石的测试要求。     

水浴浸提-氢化物发生-原子荧光光谱法同时测定地质样品中痕量砷和汞

采用盐酸-硝酸混合酸(盐酸-硝酸-水体积比3∶1∶4)水浴浸取地质样品,在样品消解后的母液中直接加入硫脲-抗坏血酸混合溶液,以氢化物发生-原子荧光光谱法同时测定地质样品中的痕量砷和汞。方法检出限为砷0.033 6 ng/mL,汞0.003 7 ng/mL;相对标准偏差(RSD,n=1)为砷1.1%,汞3.0%。对国家一级标准物质GBW 07109~GBW 07114、GBW 07301~GBW 07312、GBW 07401~GBW 07408中的砷和汞进行测定,测定值与标准值相吻合。     

Mineralogical Associations of Arsenic and Antimony in Thirty Five Geochemical Reference Materials by Sequential Extraction with Hydride Generation and Atomic Absorption Spectrometry

A method is described to estimate the chemical forms of arsenic (As) and antimony (Sb) in a variety of geochemical reference materials, combining a sequential extraction scheme with hydride generation and atomic absorption spectrometry (HG-AAS). The fractions dissolved by sequential extraction are empirically defined as the exchangeable, EDTA soluble, oxide, sulfide and residual fractions. The amount of As and Sb in the EDTA soluble fraction have been derived mainly from oxide phases, and partly from carbonate minerals. Most sulfide minerals in common geological samples were considered to be dissolved with the digestion of 0.7 mol l⁻¹ NaOCl, but only small fraction of arsenopyrite and loellingite in ores could be dissolved in this way. Satisfactory agreement was observed between the sum of the As or Sb values from exchangeable to residual fractions and the reported total As or Sb values, with a few exceptions. Analytical results of As and Sb for thirty five geochemical reference materials are tabulated, and geochemical and mineralogical features are discussed.