制定和实施我国矿山复垦保证金制度

本文分析了现阶段我国矿业开发中面临的主要生态环境问题，国外矿业发达国家的矿山生态环境保护的先进措施和具体做法，指出了我国实施矿山复垦保证金制度的必要性和可行性，并提出了具体的实施方案。     

离子浮选法从钨酸盐溶液中分离钨钼

利用作者试验室合成的捕收剂采用离子浮选法进行了钨钼分离．对于（ＮＨ４）２ＷＯ４溶液和Ｎａ２ＷＯ４溶液体系，每克钼捕收剂用量为６７６ｇ的条件下，对于含钼量为０４～１２ｇ／Ｌ的料液，其除钼率可达到９４％～９９％．     

华南沿海黄色粉土沉积的激光粒度分析及其成因讨论

在华南沿海地区的低矮丘陵及台地上，广泛发育一套黄色粉土堆积。对该区7个典型剖面进行系统的激光粒度分析，并与典型黄土以及研究区常见的海、河相沉积进行对比。结果表明，华南沿海各黄色粉土剖面均以10～50 μm的粗粉砂为众数粒组，<5 μm的粘粒为次众粒组，分别对应风成黄土的“基本粒组”和“挟持粒组”，岩性均属于粘土质粉砂。样品的粒度参数、粒度散点图、频率分布曲线、粒度指数特征均显示为典型的风成成因。粒度判别分析结果为负值，同样证实了黄色粉土的风成特性。华南沿海黄色粉土的各项粒度特征指标及其所反映的沉积类型、沉积环境均与我国典型黄土具有较好的可比性，而与研究区的海、河相沉积截然不同。     

Characterization of polyether‐poly(methyl methacrylate)‐lithium perchlorate blend electrolytes

Solid polymer electrolyte (SPE) systems based on interpenetrating blends of poly(ethylene oxide‐co‐propylene oxide) and poly(methyl methacrylate) host matrices, with lithium perchlorate as guest salt, were prepared. These electrolytes were presented as free‐standing films, and their thermal and electrochemical properties were characterized by conductivity and electrochemical stability measurements. The properties of the interpenetrating blends of poly(ethylene oxide‐co‐propylene oxide) and poly(methyl methacrylate) host matrices as the electrolyte component of a solid‐state electrochromic device are reported and the results obtained suggest that this electrolyte provides an encouraging performance in this application. The most conducting electrolyte composition of this SPE system is the formulation designated as SPE2‐0PC (5.01 × 10^?4 S cm^?1 at about 57°C). The lowest decomposition temperature was registered with the SPE6‐15PC composition (233°C). The average transmittance in the visible region of the spectrum was above 41% for all the samples analyzed. After coloration the device assembled with 71 wt% PC presented an average transmittance of 15.71% and an optical density at 550 nm of 0.61. Copyright © 2010 John Wiley & Sons, Ltd.     

高硫成矿系统中明矾石的稳定同位素特征

根据矿物组合及蚀变特征,浅成低温热液型金矿可划分为高硫化型和低硫化型,明矾石是高硫化型金矿床中典型矿物.高硫化型矿床中的酸性硫酸盐蚀变共分为4种环境:岩浆热液环境、岩浆蒸汽环境、蒸汽-加热环境和表生环境.岩浆热液环境中明矾石的δD值接近岩浆水,δ18 OOH值大于岩浆水,δ34S值比共生的黄铁矿高1.6％～2.8％,δ...