UV/TiO_2膜深度处理垃圾渗滤液的研究

研究了以固定相TiO2为催化剂光催化降解垃圾渗滤液中有机污染物的可行性。试验了制备TiO2膜的适宜条件以及光照时间等各种因素对COD的去除率和UV335脱色率的影响。研究表明,COD为418mg/L的垃圾渗滤液经400W高压汞灯光照30min,COD的去除率和UV335脱色率分别为44.3%和75.0%。光照时间60min时,COD的去除率和UV335脱色率可提高至54%和90%。光照30min后与活性炭柱联用,COD的去除率和UV335脱色率分别提高到68.3%和84.6%。     

多管陶瓷除尘器串联旋激旋流板塔脱硫除尘研究与应用

介绍了多管陶瓷除尘器与旋激旋流板塔串联工艺应用于燃煤锅炉烟气除尘脱硫，并阐述了其关键技术装备及旋激旋流板除尘脱硫塔，工业应用验证了该技术的可行性，其具有高效脱硫除尘效率，能被广泛应用于锅炉烟气净化。     

景观及视觉影响评价初探

介绍了国内外开展景观与视觉影响评价的情况和意义 ,提出了景观与视觉影响评价的基本概念、步骤、内容和方法 ,介绍了一种较为简便、实用的用于景观与视觉影响评价的定量方法。提出了进行这项工作的难点问题及设想建议。     

Transboundary air pollution balance in the new integrated European environment

Ten out of the 12 new EU members, used to belong to the so-called “former eastern block”, with a post WWII environmental policy radically different from the tendencies followed in Western Europe. The lack of conservation regulations has resulted in a rather harmful industrialization, regarding natural resources and environmental quality. While air pollution transfer is a phenomenon of transboundary level, there is a particular interest in examining the contribution of the new EU member states to the environmental pressure faced by the older member states and vice versa. The current study utilises the official data for almost 20 years published by the European Monitoring and Evaluation Program concerning the transboundary transfer of NO_x and SO₂ in order to analyse the situation and discuss the present and future environmental policy regarding air pollution.     

复合氧化物汽车尾气净化催化剂抗SO2中毒机理研究

复合氧化物催化剂(ASC)具有较高的活性和良好的抗SO_2中毒性能.用IR、XPS、TPD等技术研究了该催化剂抗SO_2中毒机理,结果表明,与易失活催化剂相比,ASC经500h反应(反应气含SO_2约20ppm),其活性组分价态无显著变化,仅表面发生SO_2的化学吸附,经与约500ppm的SO_2作用20h后,发现仅有少量SO_4~(2-)形成.这是由于在ASC催化剂中添加了特殊助剂,而使催化剂活性组分得到保护的缘故.     

Prenatal diagnosis of congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency by steroid analysis in the amniotic fluid of mid-pregnancy: Comparison with HLA typing in 17 pregnancies at risk for CAH

Amniotic fluid (AF) levels of 17-hydroxyprogesterone (17OHP) and testosterone (T) were determined at 16–17 weeks in 17 pregnancies at risk for CAH and results compared to 75 normal controls. The fetus was predicted to be unaffected in 12 cases on the findings of normal AF levels of both 17OHP and T and the latter allowed a correct prediction of fetal sex in all instances. HLA typing confirmed normality in 12 cases revealing 5 carriers, 5 homozygous normal and 2 indeterminate. Steroid levels of the 2 groups were similar. Three fetuses were predicted to be CAH affected on unambiguously high levels of 17OHP and T (in female only). HLA typing was in agreement, and the diagnosis was confirmed in 2 abortuses and a female newborn by physical and hormonal studies. In the last 2 cases AF levels of OHP and T were normal but HLA (A/B/C) genotypes were identical to the CAH affected siblings. Normal physical and hormonal findings in the 2 aborted fetuses would exclude the possibility of an in utero virilizing form of CAH. The discrepancy could be explained on the basis that the fetuses had an allelic form of 21-hydroxylase deficiency or on the basis of recombination (not fully tested). It is concluded that a fully informative prenatal diagnosis of CAH should not rely entirely on HLA typing but on hormonal studies.     

加工含硫阿曼原油后柴油加氢装置的防腐与安全运行

通过分析柴油加氢装置的腐蚀现象及腐蚀原因，找出了因腐蚀造成的安全隐患。通过化验分析推断出发生腐蚀的重点部位。采用了加注缓蚀剂等有效的防腐措施，使腐蚀得到有效控制，保证了装置的安全运行。     

BCO分光光度法快速测定含铜三氯化铁蚀刻废液中的铜

采用双环已酮草酰二腙 (简称BCO)光度法 ,对含铜三氯化铁蚀刻废液综合利用过程中铜的快速测定进行了研究。重点对铁基体对于铜测定的干扰情况进行了研究。在选择的最佳分析条件下 ,测定三氯化铁蚀刻废液综合利用过程含铜浓度为 0 4 6g L的还原液时 ,其相对标准偏差和加标回收率分别为 1 0 5 %、99 2 1%、10 0 2 %。本方法简单快速 ,测定 1～ 2个样品仅需 30min。     

表面活性剂对分枝杆菌KR2生长的影响

研究了表面活性剂的浓度、离子类型和分子结构等对分枝杆菌KR2菌株生长的影响。结果表明，一些表面活性剂在低浓度时可以促进分枝杆菌KR2的生长，高浓度时则会抑制KR2菌株的生长。表面活性剂的离子类型对KR2菌株生长抑制作用的顺序为：阳离子活性剂TDTMA＞阴离子表面活性剂LAS＞非离子表面活性剂Tween80。表面活性剂的直链长度对KR2菌株生长的影响为：直链越短，对分枝杆菌KR2菌株生长的抑制作用越大。     

活性艳红X-3B微波辅助光催化脱色的研究

研究了微波辅助光催化氧化(MW/UV/TiO2)处理活性艳红(X 3B)模拟废水。结果表明:400mg/LX 3B在反应150min时的脱色率由UV/TiO2体系的7.07%、MW体系的13.52%提高到了MW/UV/TiO2体系的56.35%。脱色反应速率随初始浓度(CX 3B)的增大而减慢;在强酸性介质中,脱色率更高;光照度(E)越强,越有利于X 3B脱色反应;改变催化剂投加量对X 3B脱色影响不大;H2O2浓度增加,X 3B脱色率升高;在以上条件下,X 3B的脱色反应均符合一级反应动力学方程,脱色反应中同时存在自由基反应与直接光解反应。