活性艳红X—3B染料清洁生产工艺研究

提出了活性艳红X－3B染料生产中盐析滤液减压蒸发回收工业盐循环利用的清洁生产工艺，并通过试验，得出盐析滤液温度80℃，真空度0.08MPa，冷凝器出水温度40℃为最佳操作条件组合。     

植物络合素及其合酶在重金属抗性中的功能研究进展

Under heavy metal stress, higher plants initiate a set of defense responses, among which biosynthesis of phytochelatins (PCs) is important. PCs are rich in cystein and biosynthesized by phytochelatin synthase. The chemical structure of PCs and their ability to form complexes with a large range of metal ions is clear. Up to now, these peptides are known to play an important role in both endogenous metal ion homeostasis and heavy metal ion detoxification. The mechanism of cadmium tolerance is illustrated in detail. A model of this mechanism suggested that the detoxification process of cadmium include such steps as PCs induction, transport of cadmium into the tonoplast, formation of the HMW-Cd-PCs complexes and sequestration in vacuole. At the same time, PCs also have other functions, such as detoxification of arsenic, protecting enzyme from metal ion inhibition and supplying metal ion as a cofactor to the enzyme potentially. However, a lot of questions about its biological function remain to be answered. In 1999, three independent labs isolated the genes encoding the PCs synthase. This breakthrough of plant heavy metal tolerance research gave us a chance to further study the heavy metal tolerance mechanism. All the results from the reserch of PCs have a ffreat application potential in phytoremidation. Fig 1, Ref 25     

石杉碱戊和石杉碱己的结构

在石杉［Ｈｕｐｅｒｚｉａｓｅｒｒａｔａ（Ｔｈｕｎｂ．）Ｔｒｅｖ．］中分得了命名为石杉碱成素和已素的２个新生物碱，并用２Ｄ－ＮＭＲ和ＭＳ测定了它们的化学结构．     

抗真菌多肽——捷安肽素高产菌的选育

从新疆棉株上分离得到一株细菌ZK ,经培养物性状和生理生化鉴定 ,确定该菌为芽孢杆菌属 (Bacillussp.)菌 ,其代谢产物为一种抗病原真菌的肽类物质———捷安肽素 .以此株菌作为出发菌株 ,进行紫外线、微波和亚硝基胍诱变 ,诱变处理后获得高产突变株Mv2 8,在摇瓶试验中 ,该变异株产捷安肽素活性比出发菌株提高 31.6 % .图 5表 5参 12     

红球藻水生748株（Haematococcus sp.HB748）培养基的选择…

比较了红球藻ＨＢ７４８株在ＭＣＭ，ＢＢＭ及ＢＧ－１１，３种培养基中的生长，结果表明：ＨＢ７４８在这３种培养基中前４ｄ的平均生长速率分别为０．９７ｄ＾－１，０．７７ｄ＾－１和０．６３ｄ＾－１存在显著差异，然而在ＢＢＭ和ＢＧ－１１中添加ＭＣＭ中所含等量ＶＢ１２后，７４８株在３种培养基中的生长速率趋于一致，表明ＶＢ１２是ＨＢ７４８维持较好的前期生长的必需成分，在ＶＢ１２的需求满足后，３种培养基无机组分的     

Effect of sorbed and desorbed Zn（II） on the growth of a green alga （ Chlorella pyrenoidosa）

Toxic effect of Zn（II） on a green alga （Chlorella pyrenoidosa） in the presence of sepiolite and kaolinite was investigated. The Zn-free clays were found to have a negative impact on the growth of C. pyrenoidosa in comparison with control samples （without adding any clay or Zn（II））. When Zn（II） was added, the algae in the presence of clays could be better survived than the control samples, which was actually caused by a decrease in Zn（II） concentration in the solution owing to the adsorption of Zn（II） on the clays. When the solution system was diluted, the growth of algae could be further inhibited as compared to that in a system which had the same initial Zn（II） concentration as in the diluted system. This in fact resulted from desorption of Zn（II） from the zinc-contaminated clays, although the effect varied according to the different desorption capabilities of sepiolite and kaolinite. Therefore the adsorption and desorption processes of Zn（H） played an important part in its toxicity, and adsorption and desorption of pollutants on soils/sediments should be well considered in natural eco-environmental systems before their risk of toxicity to aquatic organisms was assessed objectively.     

土壤环境中活性X-3B红染料的淋溶行为与淹水释放模拟研究

采用土柱模拟实验对土壤环境中活性X－3B红染料的淋溶行为及向下迁移能力进行研究，结果表明，活性X－3B红染料这一有机污染物在土壤中的淋溶及向下迁移是一指数函数可以表达的动态过程，其可淋失能力因土壤类型不同而有较大的差异，其顺序为：褐土＞棕壤＞红壤＞水稻土，究其原因，主要与土壤本身的各理化特性有关，即可淋失能力不仅与土壤粘粒和有机质含量存在显著负相关，与土壤pH值存在显著正相关，土壤阳离子交换量也对其可淋失能力具有一定的贡献，是土壤各理化特性的综合。此外，通过污染土壤淹水实验，初步确定土壤中活性X－3B红染料具有释放到地表水体中的较大环境风险。     

优化内浸式Ce掺杂ZnO光催化降解罗丹明B

采用沉淀法优化制备了纳米级Ce掺杂ZnO，利用BET，XRD，SEM，ICP-AES，UV-Vis DRS，FT-IR等手段对催化剂结构形态组成进行表征.提出内浸式光催化降解模式，考察液层厚度对透光率的影响，优化了Ce掺杂ZnO光催化降解罗丹明B实验条件，分析了其动力学和机理.结果表明，Ce掺杂比为3%（n：n），500℃热处理2h活性最高.催化剂呈球状，尺寸均匀，粒径80~100nm，BET比表面积12.9m²/g，测定掺杂量和理论值一致，Ce掺杂增加了光吸收.悬浮液"遮挡效应"对光透过率衰减显著，催化剂浓度为0.1g/100mL时UV₂₅₄处光衰减率达到溶液的3倍.内浸式光催化降解1.0×10^-5mol/L罗丹明B溶液，在15W紫外灯，pH值为7，温度30℃，催化剂投加量0.1g/250mL条件下，70min降解率达到92.5%，6次套用降解率保持在80%以上，降解过程符合一级动力学，反应速率常数0.05min^-1.     

固定化紫色非硫化合细菌降解活性艳红X—3B的研究

采用聚集－交联法固定化紫色非硫光合细菌用于处理活性艳Ｘ－３Ｂ染液，比较紫色非硫光合物细菌和固定化细胞的某些性质。２种细胞的反应最适温度均为３０－４０℃，固定化细胞的反应最适ＰＨ值范围较宽，为７．５－９．４热稳定性较好。Ｃｕ＾２＋对２种细胞毒活力均有抑制作用；比较聚集－交联固定化细胞和海藻钠包埋固定化细胞的脱公能力，前者比后者酶活力较高，半衰期长，成本低，操作方法简单，易于工业化应用。     

超声/镁粉体系协同降解活性艳红

研究了超声/镁粉体系对偶氮染料活性艳红X-3B的降解效果,探讨了溶液pH值、声强、镁粉投加量、辐照时间等因素对染料脱色率的影响。结果表明,当溶液pH=3.5,声强=54.3W/cm2,镁粉投加量为2.122g/L时,20mg/L活性艳红溶液在超声辐照48min后脱色率达99.71%。同时探讨了超声波/镁粉体系的协同降解作用。超声波强化镁粉降解的能力主要表现在机械振荡加速了染料向镁粉表面的传质速度;加入镁粉促进超声产生大量·OH,强化了对染料的声化学脱色和降解。超声波/镁粉联用具有显著协同作用,服从动力学一级反应。