掺入金属离子的TiO2纳米粒子光催化降解吖啶橙

利用酸催化溶胶－凝胶法（ｓｏｌ－ｇｅｌ）制备了 Ｆｅ３＋和 Ｃｒ３＋不同掺入量的 ＴｉＯ２半导体纳米粒子研究了这些纳米粒子对吖啶橙光催化氧化降解的影响．结果表明，微量 Ｆｅ３＋和 Ｃｒ３＋的掺入可明显提高 ＴｉＯ２的光催化活性．进一步研究表明，在 Ｆｅ３＋－ＴｉＯ２体系中，最佳掺入量为 ０．１％，而且中性介质和自然光有利于光催化氧化反应的进行，反应３ｈ后降解率可达９７．７５％．在Ｃｒ３＋－ＴｉＯ２体系中，弱碱性介质和自然光有利于光催化氧化反应，最佳掺入量为０．０５％，降解率可达８７．５４％．     

厦门中华白海豚的重金属含量

对厦门港海域８只中华白海豚成体和幼仔体内的重金属含量进行了测定。结果表明，与鱼类和无脊上比，中华白海豚的重金属含量很高。成年的含量观于幼仔；肝的含量大大超过其他部位。中华白海豚的重金属含量高，与其它处于海洋食物链的的最顶级密切相关。     

热带西太平洋部分海域海水的化学状况分析

本文对１９９２年１１月棉兰老岛东南海域，伊里安岛北部海域上层水及４０°Ｓ１５６°Ｅ定点长达４个月的ｐＨ，Ｅｈ，ΣＳ调查分析，研究了上述海域的海水化学状况，结果表明，１９９２年１１月，在上层水中，棉兰老岛东南海域海水的碱性较弱，氧化性较强，伊里安岛北部海域海水碱性较强，还原性较强，４°Ｓ１５６°Ｅ的上层水界于二者之间。     

在线分离富集FI分光光度法直接测定铜

本文针对ＡＡＳ法测定痕量铜时，大量铁存在表现干扰，研究并建立了流动注射（ＦＩ）在线螯合树脂分离富集光度法直接测定痕量铜的新方法，具有灵敏度高、选择性强；因此，已成功地用于水样中痕量铜的测定，该法在水质检验和环境监测中有一定的适用性．     

Effect of organophosphorus pesticide pollution on soil animals

ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｓｔｕｄｙｏｆｍｏｄｅｒｎｓｏｉｌｚｏｏｌｏｇｙｈａｓｅｎｔｅｒｅｄｉｎｔｏａｓｔａｇｅｏｆｂｉｏｌｏｇｉｃａｌｐｒｏｄｕｃｔｉｖｉｔｙａｎｄｔｈｅｒｅｌａｔｉｏｎｂｅｔｗｅｅｎｈｕｍａｎａｎｄｅｎｖｉｒｏｎｍｅｎｔ.Ｐ?..     

The Pyrenees earthquake of 1660: Effects in France

Until 1975 or so, scientists' knowledge of the major earthquake of 1660 in the Pyrenees (in Bigorre) was largely restricted to the meagre information repeated in the classical catalogues. Useful material published in local learned journals was mostly unknown, and has only been unearthed and interpreted since 1976, when two year's work of analysis was started for the "Projet Sismo-tectonique" in France. During and since that project, further routine work necessary for the revision of the historical seismicity of France, has brought to light a new wealth of information from archive sources. This new knowledge, at least from the French side, is used as the basis for a brief macroseismic review of the event north of the Pyrenees, putting forward proposals for the isoseismal lines. Emphasis is placed on the number and quality of the sources, some of which are quoted for evidence of major rockfalls in the meizoseismal region and the wide extent of the felt area, as far north as Salnt-Maixent in Poitou.     

Further studies on the influence of zeolite type A on metal transfer in the activated sludge process

Investigations were carried out to determine the effect of zeolite type A on metal removal by activated sludge using laboratory activated sludge simulations. They were operated at constant aerator sludge age and settler surface loading. Different concentrations of raw zeolite and zeolite extracted from washing powder (0, 15, 30, 60, 120 mgl^?1) were introduced into the simulations. The zeolite was added at two degrees of calcium exchanged for sodium, 25 and 75% of the maximum exchange capacity. Metals were added at concentrations typical of mixed domestic-industrial waste waters. The results show that there was no adverse effect on metal removal by the laboratory activated sludge simulations in the presence of zeolite type A.     

Catalytic ozonation treatment of papermaking wastewater by Ag-doped NiFe2O4: Performance and mechanism

The catalytic ozonation treatment of secondary biochemical effluent for papermaking wastewater by Ag-doped nickel ferrite was investigated. Ag-doped catalysts prepared by sol-gel method were characterized, illustrating that Ag entirely entered the crystalline of NiFe₂O₄ and changed the surface properties. The addition of catalyst enhanced the removal efficiency of chemical oxygen demand and total organic carbon. The results of gas chromatography-mass spectrometer, ultraviolet light absorbance at 254 nm and three-dimensional fluorescence excitation-emission matrix suggested that aromatic compounds were efficiently degraded and toxic substances, such as dibutyl phthalate. In addition, the radical scavenging experiments confirmed the hydroxyl radicals acted as the main reactive oxygen species and the surface properties of catalysts played an important role in the reaction. Overall, this work validated potential applications of Ag-doped NiFe₂O₄ catalyzed ozonation process of biologically recalcitrant wastewater.     

维生素B12对厌氧污泥还原降解8:2FTOH的影响

研究了投加生物催化剂维生素B₁₂（VB₁₂）对厌氧活性污泥还原降解8：2氟调聚醇（8：2FTOH）的影响.结果表明,投加VB₁₂能够改变厌氧活性污泥还原降解8：2FTOH的动力学特性并增加其最终去除率,但投加量存在上下限：当VB₁₂投加量≤1mg/L时,8：2FTOH最终去除量无显著增加;当VB₁₂投加量≥5mg/L时,8：2FTOH最终去除量也不再持续增加.投加所有剂量的VB₁₂均可显著增加8：2FTOH的最终脱氟率.投加VB₁₂对厌氧活性污泥还原降解8：2FTOH去除率和脱氟率的影响并不一致.此外,投加较高浓度的VB₁₂可以抑制厌氧污泥还原降解8：2FTOH过程中多氟代化合物等中间降解产物的积累,提高全氟代化合物等终态降解产物的产率,同时有利于增加8：2FTOH的矿化脱氟率,但却导致了更低的总物质的量回收率.