遵化市华特饮食实业公司饮用天然矿泉水水质评价

华特饮食实业公司矿泉水井位于该公司西侧，长城脚下。１９９４年１１月经河北省矿产储量委员会鉴定，属低矿化度、ＨＣＯ＿３－ＳＯ＿４Ｃａ·Ｎａ型含Ｓｒ及Ｈ＿２ＳｉＯ＿３饮用天然矿泉水。该井水质甘甜，交通便利，具有十分良好的开发利用前景。     

隆尧酒厂锶－偏硅酸饮用天然矿泉水

本文阐述了矿泉水形成与赋存条件，指出该矿泉水赋存于第四系中、上更新统中粗砂为主的孔隙中，属松散岩类孔隙水。该矿泉水水化学类型为重碳酸钙·镁型，锶、偏硅酸达到饮用天然矿泉水国家标准（ＧＢ８５３７－８７）的界限指标，属含锶－偏硅酸的重碳酸钙·镁型饮用天然矿泉水。     

陕西省蓝田县灞河谷地饮用天然矿泉水资源特征及开发利用条件

蓝田县灞河谷地是最近查明的一个饮用天然矿泉水集中区,已发现16处矿泉水。本文从这些矿泉水产出的地质—水文地质条件,分析了矿泉水的分布规律,进而论述了矿泉水水质、水量特征和可开采资源的保证程度,并对矿泉点的开发利用条件进行了多因素综合评价。     

同位素测定样品中钙和锶的分离

与样品中基体和Rb分离了的Ca和Sr,在0.08mol/L柠檬酸-1.5mol/L NH_4OH介质中流经Dowex50×8阳离子树脂柱,并用此溶液淋洗Ca,用4mol/L HCI洗脱Sr。收集的含Sr溶液用于同位素年龄测定,消除了质谱测定过程中Ca的干扰。     

容量法连续测定磷矿石中钙锶镁

改进了用EDTA络合滴定Ca、Sr和Mg的条件,建立了磷矿石中连续测定Ca、Sr和Mg的方法,用于实际样品测定,结果符合质量要求。     

浑源塔村锶—偏硅酸饮用天然矿泉水

本文介绍了塔村泉的区域地质、水文地质特征。大量的化验结果表明，塔村矿泉水完全符合我国及世界卫生组织饮用水的水质标准。塔村泉水出露于长城系石英岩状砂岩中，为溢出泉。矿泉水的确认指标为锶、偏硅酸，水化学类型为重碳酸钠型，可命名为锶－偏硅酸重碳酸－钠型饮用天然矿泉水。水质优良，环境优美，有巨大的发展潜力和广阔的开发利用前景。     

芮城大禹神泉天然矿泉水水质评价

矿泉出露于黄河二级阶地冲沟中，属侵蚀悬挂泉。含水层为第四系下更新统胶结砂岩，地下水主要受北部中条山基岩裂隙水补给。１９９２年１２月经地矿部鉴定，符合《饮用天然矿泉水》国家标准（ＧＢ８５３７－８７），属含锶重碳酸－钠镁型矿泉水。     

Discussion: Macrofaunal zonation of Middle Permian coal sequences in Sydney Basin

Three suites of alkaline granite can be recognised in the Narraburra Complex at the triple junction of the Tumut, Giralambone‐Goonumbla and Wagga Zones, central southern New South Wales. On the basis of K₂O/Na₂O ratios, biotite and hornblende‐biotite potassic I‐type granites have been assigned to the Gilmore Hill (K₂O/Na₂O 1.00) and Barmedman Suites (K₂O/Na₂O > 1.2). These are metaluminous to weakly peraluminous suites that crystallised from high‐temperature,reduced magmas with the least fractionated members of each suite having high Ba and low Rb abundances compared to other Lachlan Fold Belt granites. Fractionated members of these suites have high abundances of high‐field‐strength elements, similar to those observed in A‐type granites. Arfvedsonite and aegirine‐arfvedsonite granites have been assigned to the peralkaline Narraburra Suite. Granites from this suite have chemistry consistent with them being the intrusive equivalents of comendites and they are also similar in some respects to A‐type granites: they have, for example, particularly high abundances of Zr. The A‐type signature is, however, at least in part the result of strong fractionation. Total‐rock Rb–Sr isotopic analyses from both I‐type suites plot on the same isochron, giving an age of 365 ± 4 Ma (Sr_l = 0.70388 ± 53). A total‐rock isochron for the peralkaline Narraburra Suite gives a less well‐defined age of 358 ± 9 Ma (Sr_l = 0.7013 ± 80). The Late Devonian Rb–Sr ages may be emplacement ages or a result of resetting during fluid‐rock interaction. Although granites of the Narraburra Complex have geochemical affinities with alkaline granites formed late in orogenic cycles, they post‐date arc magmatism by at least 75 million years and they formed in a within‐plate setting. Magmatism was related to localised reactivation of major faults (Gilmore Fault and the Parkes Thrust) in the region, and to partial melting involving both enriched mantle and Ordovician shoshonitic crustal components. Emplacement of the Narraburra Complex was contemporaneous with magmatism in the Central Victorian Magmatic Province and A‐type magmatism in eastern New South Wales. Collectively, all these magmatic events were related to extension post‐dating amalgamation of the western and central/eastern subprovinces of the Lachlan Fold Belt.     

Effects of strontium-induced stress on marine microalgae Platymonas subcordiformis （Chlorophyta： Volvocales）

1 INTRODUCTION Heavy metal pollution in marine environment has always been a serious problem over the last several decades, because most of the heavy metal species that enter marine environment accumulated there without decomposition. Strontium is a minor…     

Clay minerals and geochemistry of the bottom sediments in the northwestern East China Sea

Clay minerals of 34 sediments collected from the northwestern continental shelf of the East China Sea have been determined by X-ray diffraction analysis. The clay mineral distribution is mainly controlled by the sediment source and the dominant circulation pattern. The predominant clay mineral in our study area is illite comprising more than 67% of the whole clay fraction. The highest concentration of illite (>68%) is found in the southeastern offshore parts beyond the reach of terrigenous input from the Jeju Island. It means that these illites are largely transported by the Kuroshio Current from the South China Sea (SCS). Smectite is highly concentrated in the northwest middle part and in the outer-shelf mud patch. It seems to be due to the high supply of smectite transported from China where fine-grained sediments are discharged from modern and ancient Huanghe (Yellow) River. The relatively high abundant kaolinite is likely derived from the Changjiang (Yangtze) River via the Taiwan Warm Current. In contrast, large amounts of chlorite and high chlorite/kaolinite ratios occur in the northwestern area, reflecting the transportation by the Yellow Sea Coastal Current from the southern Yellow Sea. The discrimination diagrams clearly show that the sediments in the northwestern East China Sea are ultimately sourced from Chinese rivers, especially from the Huanghe River, whereas the sediment in the northeast part might come from the Jeju Island. The muddy sediments of the Changjiang River’s submerged delta have much lower 87Sr/86Sr ratios (0.716 2–0.718 0) than those of the Shandong Peninsular mud wedge (0.721 6–0.724 9), which are supposed to be originated from the Huanghe River, suggesting the distribution pattern of 87Sr/86Sr ratios as a new tracer to discriminate the provenance of shelf sediments in the study area. The 87Sr/86Sr ratios of the outer-shelf muddy sediments ranged from 0.7169 to 0.7216 in a wide range and was between those of the Huanghe River and Changjiang River sediments, suggesting multiple sources of the sediment in the area.