传统藏药材高原香薷的矿质元素分析

对传统藏药材香薷中高原香薷种的17种微量元素进行了分析。结果表明，在高原香薷中人体必需微量元素Cu、Zn、Fe、Mn、Co、Ni、Se等含量较高，尤其以Cu、Fe、Mn元素的含量为高。Na、Ca等宏量元素含量亦较高。

藏药牦牛肝提取物中矿物质元素特征及意义

采用220FS原子吸收光谱仪测定了传统藏药牦牛肝提取物中的K、Na、Ca、Mg、Fe、Cu、Zn、Mn等8种矿物质元素含量.结果显示,藏药牦牛肝提取物中含有丰富的矿物质元素,对儿童和青少年骨骼的生长发育,中老年骨质疏松症预防有着极为重要的营养学和治疗意义,开发前景广阔.

不同生长时期盐藻无机元素分析

测定了对数生长期和稳定期盐藻中10种无机元素K、Na、Ca、Mg、P、Cu、Zn、Fe、Mn、Se的含量.结果表明,稳定期盐藻中K、Ca、Mg、Cu、Zn、Fe、Mn、Se的含量比对数生长期都有不同程度的增加,Na、P的含量反而降低.

塞隆骨与虎骨中矿物质元素的比较

目的对比分析国家一类动物药塞隆骨和禁用传统中药材虎骨中的19种矿物质元素的含量.方法骨骼样品经灰化或消解处理后,采用原子吸收光谱法、氢化物原子荧光光谱法、催化极谱法等分析方法测定矿物质元素.结果两种动物骨骼中元素含量差异显著,塞隆骨11种元素高于虎骨,特别是Cu、Zn、Fe、Mn、Se等生命活动必需微量元素塞隆骨极为显著地高于虎骨,而组成骨骼的主要成分Ca、P则为虎骨高于塞隆骨.矿物质元素在头骨、脊梁骨和腿骨中分布非常不平衡,多数元素以头骨中分布最为丰富,而5种常量元素Ca,P,Na,Mg,K的含量为腿骨＞头骨＞脊梁骨.骨骼中主要成分Ca和P的存在形式主要为羟磷灰石Ca10(PO4)6(OH)2.结论塞隆骨骨骼中的矿物质元素与虎骨有可比性,必需微量元素塞隆骨明显优于虎骨.

Comparative Study on Antioxidant Systems of Polygonum Viviparum Grown at Two Different Altitudes

Study on the antioxidant systems of Polygonum viviparumgrown at two different altitudes indicated plants grown at Haibei Research Station at 3200 m altitude as compared with plants grown in Xining at 2300 m altitude had apparently higher contents of ultroviolet-absorbing compounds and ascorbic acid, and significantly higher activities of superoxide dismutase, peroxidase and ascorbic peroxidase. Higher contents of superoxide radical anions and malonadehyde were also found in plants at Haibei Research Station as compared with the plants grown in Xining which have been transplanted from Haibei Research Station for at least four years. The differences in antioxidant system reflect a long term of time of adaptation to different environments.

青海柴达木地区植物白刺叶中微量元素特征

青海柴达木地区分布有丰富的白刺植物资源。利用220FS原子吸收光谱仪分析了该地区三种白刺叶中的Cu、Zn、Fe、Mn、Cr、Ni、Cd等微量元素，结果表明，铬、锰含量显著提增高是青海柴达木地区植物白刺叶资源的微量元素特征，这为柴达木地区白刺叶资源的开发利用提供科学依据。

藏药牦牛骨主要矿物质元素及其特征

采用220FS原子吸收光谱仪测定了传统藏药牦牛骨中的K、Na、Ca、Mg、P、Cu、Zn、Fe、Mn、Ni、Pb、Cd等12种矿物质元素含量。结果显示，藏药牦牛骨中含有丰富的矿物质元素，对儿童和青少年骨骼的生长发育，中老年骨质疏松症预防有着极为重要的营养学和治疗意义，开发前景广阔。

青海高原地木耳中微量元素分析及特征

青海民间称为山珍的地木耳, 具有清热解毒、凉血明目营养保健功效, 是一种天然的绿色营养保健食品。文中采用美国Varian - 220 FS 原子吸收光谱仪, HYD - 2 型氢化物原子荧光光谱仪测定了青海高原地木耳中Cu 、Zn 、Fe 、Mn 、Co 、Se 等6 种微量元素, 为科学地开发利用青海高原地木耳食物资源提供一些基础资料和科学依据

红珍珠降糖胶囊中微量元素营养研究

红珍珠降糖胶囊是具有显著降低血糖水平, 促进糖尿病患者康复的绿色营养保健食品。通过红珍珠降糖胶囊中Cr、Mn、Cu、Zn、Mg 等微量元素的分析测试以及与青海小麦、膳食日摄取量等对比研究, 表明红珍珠降糖胶囊富含涉及糖尿病的微量元素, 在降低血糖水平方面具有十分重要的营养学、功效学作用和意义。

高原鼢鼠和高原鼠兔骨骼无机化学成分的研究II.必需微量元素

本文报道了高原鼢鼠和高原鼠兔整体骨骼及头骨、脊柱骨和下肢骨中Cu、Zn、Fe、M n、Co、N i、Mo、Cr、T i、F、Se 和Ge12种必需微量元素的含量, 并进行了显著性差异和相关性分析。结果表明: 只有Cu 的含量在两种动物骨骼中没有显著性差异(P > 0.05) , 其余11种元素均有显著性或极显著性差异(P < 0.05或P < 0.01) , 其中Zn、Fe、M n、Co、N i、Mo、F 和Se 的含量, 高原鼢鼠> 高原鼠兔, 而Cr、T i 和Ge 的含量, 高原鼠兔> 高原鼢鼠。微量元素在头骨、脊柱骨和下肢骨中分布很不均衡, 以头骨的微量元素最为丰富。

Effects of La3+ on the active oxygen-scavenging enzyme activities in cucumber seedling leaves

The effects of La3+ on the antioxidant enzyme activities and the relative indices of cellular damage in cucumber seedling leaves were studied. When cucumber seedlings were treated with low concentrations of LaCl3 (0.002 and 0.02 mM), peroxidase (PO) activity increased, and catalase (CAT) activity was similar to that of control leaves at 0.002 mM La3+ and increased at 0.02 mM La3+, whereas superoxide dismutase (SOD) activity did not change significantly. The increase in the contents of chlorophyll (including chlorophylls a and b), carotenoids in parallel with the decrease in the level of malondialdehyde (MDA) suggested that low concentration of La3+ promoted plant growth. However, except the increase in SOD activity at 2 mM La3+, CAT and PO activities and the contents of pigments decreased at high concentrations of La3+ (0.2 and 2 mM), leading to the increase of MDA content and the inhibition of plant growth. It is suggested that lanthanum ion is involved in the regulation of active oxygen-scavenging enzyme activities during plant growth.

Effects of hypoxia on contents of essential elements in pika and rat heart

The effects of hypoxia on the levels of essential macroelements and trace elements (K, Na, Ca, Mg, Cu, Zn, Fe, and Mn) in the heart muscles of Wistar rats and plateau pikas (Ochotona curzoniae) were studied by atomic absorption spectrometry. Unlike the rat, the plateau pika is tolerant to hypoxia. The levels of K, Na, and the trace element Mn were not significantly changed in rat or pika hearts after exposure to hypoxia for 1, 10, or 25 d at simulated altitudes of 5000 and 7000 m. Other minerals (Ca, Mg, Cu, Zn, and Fe) were significantly affected by hypoxia and the levels followed different time-courses under different hypoxic regimes in these two animals. There were marked differences between the rat and pika in myocardial accumulation of essential elements such as Ca, which was increased to high levels in the rat but not affected in the pika. The results suggest that hypoxia affects animal physiological mechanisms by regulating the levels of essential elements.

阿尔泰南缘侧向增生过程中的VMS矿床：地质、地球化学特征与成矿机制

The Chinese Altai is one of the most important volcanogenic massive sulfide (VMS) deposit districts in China. All orebodies were lenticular or bedded and stratabounded by a suite of early Devonian volcanic-sedimentary rocks. Hydrothermal feeder zones developed under some of the orebodies. All the ores are massive or laminated, and show typical characteristics of VMS deposit. Based on the mineralizing time and the metal assembles, we divide 3 metallogenic stages: 1, Fe orefroming stage associated with basaltic and sedimentary rocks during very early Devonian; 2, Cu-Pb-Zn oreforming stage associated with rhyolitic and sedimentary rocks during early Devonian; 3， Cu-Zn oreforming stage in the dacitic and basaltic rocks during mid. Devonian. The hosting rocks for all orebodies are different, but they show very similar geochemical and isotopic characteristics. All the felsic rocks show enriched lighted rare earth elements (REE) patterns (La/Yb>5), and with an obvious Eu negative anomalies (Eu/Eu*<0.6). In the meanwhile, all the mafic rocks show flat REE pattern and no Eu anomalies. The Ashele basalt show an apparent Ce negative anomalies (Ce/Ce* <0.76), All the volcanic roks in Chinese Altai show the decoupled property between the high field strength elements (HFSE) and large ion lithophile elements (LILE). The negative Nb, Ta characteristics with respect to adjacent elements indicate that subduction-modified source. The Nd(t) of the hosting rocks for all orebodies changed in a small range (-1.5~5), and the (87Sr/86Sr)i change in a big range. The initial Sr value of the hosting rocks in Mengku and Tiemuerte are obviously affected by the seawater (0.705~0.710), and initial Sr values of hosting rocks Ashele change in a small range (0.704~0.706). All Sr-Nd isotopes of ores have the same range with the hosting rocks, indicating that both the ores and volcanic rocks have the same island arc source. The mean sulfur isotopes of sulfides from Ashele and Mengku are 6.2‰ and 3.4‰, respectively, indicating a deep magmatic source. However, the sulfur isotopes of sulfides from Keketale, Tiemuerte and Keyinbulake changed in -15.8‰~9.9‰, -23.5‰~1.87‰, -8.3‰~1.6‰, respectively. And the big sulfur isotope range indicated that the sulfur of the ores was a combination biogenic and magmatic source. All volcanic rocks from the VMS deposits in the southern Chinese Altai show a typical subduction related environments. Based on the regional and locally geological evidence, here we propose that the southern Chinese Altai is an island arc system, and all VMS deposits formed during the lateral accretion process. No VMS deposit formed during the formation of the island arc during Silurian; Fe VMS deposit formed during the beginning of the opening of the backarc basin in very early Devonian; Cu-Pb-Zn VMS deposits formed during the mature stage of the backarc basin in early Devonian; at last the Cu-Zn VMS deposit formed during the rifted stage of the island arc itself.

铜锌同位素方法在环境地球化学研究中的应用

近年来，随着多接收电感耦合等离子体质谱 (MC-ICP-MS)逐渐应用，过渡族金属(Cu，Zn 和Fe 等)同位素测试方法逐渐成熟，测定精度可达0.04‰，使得铜锌铁等同位素地球化学研究成为近年来国际地学研究领域的热点。本文对铜锌同位素的测试方法、分馏机理及其在环境地球化学研究领域的应用进行了较系统综述。

贵阳市红枫湖水体悬浮物中重金属污染及潜在生态风险评价

研究了红枫湖水体中悬浮物重金属（Zn、Cu、Cr、Pb和Cd）的季节性和空间性污染特征，采用Hakanson潜在生态危害指数法评价了水体悬浮物中重金属的潜在生态危害。结果表明，重金属随着季节和空间变化都较大；产生潜在生态危害的重金属主要是Cd和Pb，分别达强度生态危害水平和中度生态危害水平，Cu、Zn和Cr显示轻度危害水平；潜在生态危害综合指数RI=226．09，说明重金属污染已达到中度生态危害。红枫湖悬浮物重金属潜在生态危害指数的季节性变化顺序为二月〉六月〉四月〉十二月〉十月〉八月，空间变化顺序为化肥厂河〉麦包河〉猫跳河〉桃化源河〉后六河〉羊昌河〉北湖〉麻线河〉南湖。