微波诱导等离子体原子发射光谱法测定铍铬钼钒锆锗的研究   总被引：1，自引：0，他引：1  

张晓惠  侯明轶 《岩矿测试》1992,11(3):221-224

研究了用微波诱导等离子体原子发射光谱法(MIP-AES)测定Be、Cr、Mo、V、Zr和Ge。确定了最佳实验条件,其检出限分别为:0.038,0.030,0.015,0.030,0.024和0.11μg/ml。对实际样品进行了测定,结果令人满意。  相似文献   

OP乳化剂-水杨基荧光酮光度法测定锌湿法冶炼净化液中锗     

龙纪群 《贵州地质》2007,24(2):151-153

在盐酸介质中,在OP乳化剂存在时,水杨基荧光酮与锗形成水溶性络合物,最大吸收波长在510nm处,该络合物具有灵敏度高,选择性好的特点,锗含量在0~8μg/25m l范围内符合比耳定律,该方法已用于锌净化液中锗的测定。  相似文献   

原子荧光光谱法测定地质样品中的痕量锗   总被引：7，自引：1，他引：7  

肖灵张培新  胡月华 《岩矿测试》2004,23(3):231-234

分析了溶矿过程中HNO3、H2SO4、HClO4、H3PO4等对Ge的影响，采用AgNO3滤气装置消除气相干扰，测定了地质样品中的痕量锗，方法检出限为0．06μg／g，用土壤国家一级标准物质GBW 07401～GBW 07408验证方法，结果与标准值相符，其相对标准偏差(RSD，n=12)为3．66％～6．11％。  相似文献   

Germanium-bearing Colusite in Siliceous Black Ore from the Ezuri Kuroko Deposit, Hokuroku District, Japan     

Kosei Komuro  Yoshimichi Kajiwara 《Resource Geology》2004,54(4):447-452

Abstract. Germanium‐bearing colusite occurs with sphalerite, galena, tetrahedrite‐tennantite, chalcopyrite and pyrite in microdruses and veinlets in the siliceous black ore from the Ezuri Kuroko deposit in the Hokuroku district of Japan. X‐ray microdiffractometry of this mineral gives strongest lines at 1.60, 1.32 and 1.09 Å, which are consistent with the known powder diffraction data of colusite. On the basis of 32 S atoms per formula unit, electron microprobe analyses yield empirical chemical formulae of (Cu_{24 0}Fe_0.3Zn_1.0)_σ25.3V_1.9(A_s4.8Sb_0.2)_σ5.0Ge _1.3S₃₂ for Ge‐bearing colusite in close association with sphalerite, and (Cu_24.6Fe_0.9)_σ25.4V_1.8(A_s4.1 Sb_0.2)_σ4.3Ge_1.7S₃₂ for that coexisting with chalcopyrite, consistent with the ideal formula of Cu_24+xV₂(As, Sb)_6‐x(Sn, Ge)_xS₃₂ (x = 0 to 2) proposed by Spry et al. (1994) for this mineral species. The Ge‐bearing colusite mineralization is suggested to have occurred concurrently with consolidation of the siliceous black ore, possibly during hydrothermal modification in association with the igneous activity of the Ohtaki quartz diorite of the later Onnagawa stage. It is likely that biogenic siliceous ooze, a possible precursor of the siliceous black ore, may have served as an in situ source of Ge as well as other essential rare elements, leading to the formation of Ge‐bearing colusite during transformation or recrystallization of biogenic opal into a‐quartz.  相似文献   

重庆典型农业区富锗土壤分布特征及影响因素     

余飞  张永文  王宇  罗凯  陈达兵  谢建 《地质与资源》2021,30(5):609-616

通过采集重庆市典型农业区南川区8496件表层土壤样品,测定土壤锗及其他元素的含量,对锗含量特征及其影响因素进行分析探讨.研究结果表明：南川区土壤锗含量变化范围为0.13×10^-6~13.59×10^-6,平均值为1.54×10^-6,高于重庆市"一小时经济圈"和重庆紫色土壤中锗的平均含量.研究区富锗（1.4×10^-6以上）土壤面积达1 559.8 km²,主要分布在研究区南部.南川区高锗土壤主要分布在二叠系上统吴家坪组、长兴组和三叠系下统大冶组、嘉陵江组.土壤锗含量主要受成土母质控制,与土壤有机质呈显著正相关关系,与8项重金属元素存在伴生关系.中部高值区受密集的煤矿和人为影响较大.  相似文献   

电感耦合等离子体质谱法测定地球化学样品中的硼碘锡锗   总被引：4，自引：3，他引：1  

阳国运  唐裴颖  张洁  战大川  覃盛  何雨珊 《岩矿测试》2019,38(2):154-159

在多目标的配套方法中,硼、碘、锡、锗四个元素的分析涉及三个配套方法,发射光谱法测定硼、锡,原子荧光光谱法测定锗,分光光度法或电感耦合等离子体质谱法(ICP-MS)测定碘,分析成本高、检测效率低。本文建立了一种ICP-MS同时测定地球化学样品中硼、碘、锡、锗的方法。样品用过氧化钠熔矿,使难熔元素锡分解完全,熔盐经水提取后加入铼内标,再用阳离子交换树脂分离大量钠盐及大部分阳离子,保证了盐分满足质谱测定的要求。方法检出限分别为硼0.92μg/g、碘0.10μg/g、锡0.29μg/g、锗0.09μg/g,满足多目标测试要求。用国家一级标准物质验证,测定值与认定值一致,相对标准偏差(RSD,n=12)≤5%,适用于批量地球化学样品中硼、碘、锡、锗的测定,样品处理过程简便,检测效率高。  相似文献   

交流电弧-光电直读发射光谱同时测定碳酸盐矿物中银硼锡的方法研究     

肖细炼  王亚夫  张春林  杨小丽 《岩矿测试》2020,39(5):699-708

银硼锡元素的丰度和变化特征可以反映区域成矿条件,指示矿床或矿化存在。碳酸盐矿物中的银硼锡是勘查地球化学及多目标地球化学中的必测元素,其测定方法是地球化学元素配套分析方案中必不可少的方法之一。由于碳酸盐矿物与普通的岩石、土壤和水系沉积物不同,该类矿物主要是灰岩、白云岩等含钙和镁元素比较高的岩石类样品,同时测定样品中银硼锡的技术难点在于高含量钙镁基体会严重干扰低含量待测元素,且摄谱过程中由于易产生二氧化碳造成样品飞溅。针对碳酸盐矿物的特殊性,本文建立了交流电弧-光电直读发射光谱同时测定碳酸盐矿物中银硼锡的分析方法。通过优化样品前处理及实验条件,用10%的盐酸处理样品,消除了基体元素钙和镁的干扰;以锗(Ge)作为内标元素进行定量,可以消除因电弧激发条件变化以及试样基体组分等外部因素造成干扰的影响;采用银与长波锗元素组成分析线对,硼和锡与短波锗元素组成分析线对,灵敏度较好;选择天然碳酸盐岩石与人工合成灰岩等12种国家一级地球化学标准物质作为标准系列,使基体组分与样品相类似;采用分析线和内标线同时扣背景的离线差减法进行背景校正。结果表明:该方法对银硼锡的检出限分别为0.008、0.49、0.18μg/g;方法精密度(RSD)对银大于10%,其余均优于10%;经国家一级地球化学标准物质验证,银硼锡测定平均值与认定值的对数差值(ΔlgC)均小于或等于±0.05,满足多目标区域地球化学调查规范的要求。  相似文献   

Reliable Determination of Ge in Solid Environmental Samples Using a Chemical Preparation Procedure Developed for Si Isotopes and ICP‐MS Analysis          下载免费PDF全文

Camille Delvigne  Bernard Angeletti  Abel Guihou  Isabelle Basile‐Doelsch  Jean‐Dominique Meunier 《Geostandards and Geoanalytical Research》2018,42(1):139-149

Germanium (Ge) exists at trace levels in the Earth's crust and is a powerful geochemical tracer of the silicon (Si) cycle. This study proposes a simple and reliable method for determining Ge contents in environmental samples using ICP‐MS. As Si and Ge have very similar chemical properties, we investigated the applicability of the chemical preparation procedure developed for Si isotopes for the determination of Ge in environmental samples. Advantages of this procedure are as follows: (a) efficient removal of the matrix and main interferences affecting Ge determinations by ICP‐MS, (b) a low limit of detection (6 ng l^?1), (c) relative repeatability of approximately 3% obtained on ⁷⁴Ge and (d) robustness and accuracy based on agreement within errors with the published Ge values for rock reference materials (BHVO‐2, AGV‐2 and BCR‐2). This procedure allowed revision of the Ge values of three soil reference materials (1.67 ± 0.09 μg g^?1, 2.41 ± 0.18 μg g^?1, 1.89 ± 0.10 μg g^?1 for GBW 07401, GBW 07404 and GBW 07407, respectively) and proposal of a value for the plant reference material ERM‐CD281 (70 ± 3 μg g^?1). This method provides a convenient procedure for determining Ge mass fractions in environmental samples and opens the possibility of coupling two tracers of the Si biogeochemical cycle with a single measurement procedure.  相似文献   

锗对几种微藻生长的影响   总被引：6，自引：0，他引：6  

高亚辉  王大志 《台湾海峡》1997,16(1):63-66

根据锗对微囊藻、聚球藻和钝顶螺旋藻生长影响的研究表明，锗对藻类生长的影响因种类而异：微囊藻对锗的耐受能力较强，在培养范围内（０￣２５ｍｇ／ｄｍ＾３，ＧｅＯ２），锗对其生长具促进作用；钝顶螺旋藻的正常生长浓度要低于２５ｍｇ／ｄｍ＾３，当锗浓度达２５ｍｇ／ｄｍ＾３时，生长受明显抑制；聚球藻对锗较敏感，锗浓度超过１２．５ｍｇ／ｄｍ＾３时会抑制其生长，甚至起毒害作用。文中还探讨了锗对藻类生长影响与藻细胞所  相似文献   

Lincang superlarge germanium deposit in Yunnan Province,China: Sedimentation,diagenesis,hydrothermal process and mineralization   总被引：2，自引：0，他引：2  

Zhuang Hanping Lu Jialan Fu Jiamo Liu Jinzhong Guangzhou Institute of Geochemistry  Chinese Academy of Sciences  Guangzhou 《中国地质大学学报(英文版)》1998,9(2)

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