砷对人血淋巴细胞转化及DNA合成的效应

无机砷化合物（亚砷酸钠和砷酸钠）对未致敏人血淋巴细胞的转化和DNA合成是双相性的,即在低浓度下可促进淋巴细胞转化,而在较高浓度下抑制淋巴细胞的转化。人血淋巴细胞具有自发的DNA合成作用,低浓度的砷对这种自发DNA合成有促进作用,高浓度砷则有抑制作用。人血淋巴细胞与砷连续接触3天以后,其转化过程便被诱发;连续接触砷6天以后,转化过程受砷的刺激达到最大;细胞与砷接触时间愈长,具最大刺激效应的砷浓度就愈低。三价砷较五价砷的效应强。     

非程序DNA合成试验检测长江水质的遗传毒性

应用原代肝细胞的非程序DNA合成（UDS）试验检测水质的遗传毒性。结果表明,试验条件是可行的。UDS试验从DNA修复合成的角度来反映受试物的遗传毒性作用,可作为水质的评价方法之一。应用UDS试验对长江中下游五个城市的源水及自来水进行检测,结果发现,无论是源水还是自来水均可引起cpm值的升高,说明对哺乳动物细胞均具有一定的遗传毒性。     

汞和镍对人血淋巴细胞转化及DNA合成的效应

通过测定3H－TdR参入细胞DNA的方法研究了氯化汞和氯化镍对人血淋巴细胞转化和DNA合成的效应。结果表明,氯化汞和氯化镍对人外周血淋巴细胞的转化和DNA合成的效应是双相性的：在极低浓度下汞、镍化合物均可促进淋巴细胞转化和DNA合成,而在高浓度下则抑制淋巴细胞转化和DNA合成。汞、镍化合物对淋巴细胞的这种刺激效应比细胞有丝分裂素—植物血凝素（PHA）的刺激效应要弱。汞对细胞转化和DNA合成的刺激效应比镍强     

B-62交联F-46/EDA梳型树脂的合成及吸附性能

以酚醛环氧树脂 (F 46)、乙二胺 (EDA)、甘油环氧树脂 (B 62 )为原料合成一种新型树脂 ,研究其对Cu2 ,Ni2 ,Zn2 和Co2 的吸附性能 .结果表明 ,该树脂对Cu2 具有很好的吸附性能 ,吸附量可达 1 2 9mmol·g- 1 ;对Ni2 有一定的吸附性能 ,吸附量为0 2 3mmol·g- 1 ;而对Zn2 和Co2 不吸附 .该树脂可在Cu2 ,Zn2 和Co2 等离子共存下选择吸附Cu2 .液膜扩散是吸附的主控步骤 ,可用Boyd膜扩散方程来描述     

TiO_2晶体的微波水热法制备及光催化性能研究

以TiSO4和尿素为主要原料,EDTA为控制剂,采用微波水热法制备纳米TiO2光催化剂,并分析了纳米TiO2晶粒的最佳形成条件。利用XRD、TEM等技术对制备产物进行表征。结果表明,TiSO4和尿素混合物在微波水热条件下晶化150 min后,产物为锐钛矿型TiO2,且产物粒径小、大小均匀。在紫外光照射下,以自制的锐钛矿型纳米TiO2为催化剂,酸性橙为降解目标物,进一步研究了其光催化性能。结果表明,该TiO2在紫外光照射下表现出稳定的光催化活性。     

Effects of inorganic chlorine source on dioxin formation using fly ash from a fluidized bed incinerator

Chlorine source is indispensable for polychlorinated dibenzo-p-dioxin and furan (PCDD/F) formation during municipal solid waste (MSW) incineration. Inorganic chlorine compounds were employed in this study to investigate their effects on PCDD/F formation through heterogeneous synthesis on fly ash surfaces. A fly ash sample obtained from a fluidized bed incinerator was sieved to different size fractions which served as the PCDD/F formation sources. The capability of different metal chlorides which facilitate the formation of PCDDs/Fs was found to follow the trends: Na ＜ Mg ＜ K ＜ Al ＜ Ca, when two particle fractions of ＞177 μm and 104-125 μm were used in the experiments. However, the capability of NaCl, MgCl2 and KCl did not seem much different from each other, whereas CaCl2 and AlCl3 were much more active in PCDD/F formation. NaCl and MgCl2 were relatively effective to produce more PCDDs, while KCl, AlCl3 and CaCl2 generated more PCDFs during heterogeneous reactions occurring on fly ash. 2,3,7,8-TCDF was the most significant contributor to the toxicity of the PCDDs/Fs formed from inorganic chlorine sources. Decreasing the sizes of fly ash particles led to more active formation of PCDDs/Fs when NaCl was used as inorganic chlorine in the experiment. The highest PCDDs/Fs produced from particles with size ＜37 μm, while the lowest PCDDs/Fs produced from particles with size ＞177 μm. The toxicity generally increased with decreasing size of the fly ash particles. The formation of PCDDs was mainly facilitated by the two size fractions, 104-125 μm and ＜37 μm, while formation of PCDFs was favored by the two other size fractions, ＞177 μm and 53-104 μm.     

化学合成类制药工业污染排放自行监测方案设计要点

阐述了化学合成类制药工业污染排放自行监测方案的编制依据,分析了化学合成制药的生产工艺与污染排放特征,在此基础上提出了自行监测方案的主要内容,以及监测点位、监测指标、监测频次设定的注意事项,并明确了特殊情况监测方案的设计原则及自行监测信息记录的相关内容。     

稀土水杨醛Salphen希夫碱配合物的合成与表征

利用N,N’-双（水杨醛）缩邻苯二胺配体（L）与稀土金属离子合成了稀土水杨醛Salphen希夫碱配合物{[M（NO3）2]·2H2O;M=La,Nd,Sm},并利用红外光谱（IR）、紫外-可见光谱（UV）、元素分析、摩尔电导率和差热热重（TG—DTA）对配合物的结构做了表征。结果表明,配合物中稀土金属离子M（Ⅲ）的配位数为6,同时还有2个NO3-和配位中心配位。     

Research on the Sustainable Utilization of Water Resources of Jinan City

The study on the sustainable utilization of water resources of Jinan city is a research hotspot in the urban sustainable development field.How to use a scientific and rational evaluation index system to analyze the sustainable utilization of water resources of Jinan city and then guide the development and utilization of water resources becomes particularly important.Based on the theory of sustainable development this study introduces the method,basic steps and evaluation indexes of the assessment of the development and utilization of water resources.By systemic analyzing the exploitation and utilization standards of water resources and economy and society in Jinan city,the evaluation and index system of sustainable utilization of water resources in Jinan city can be constructed and index weight can be confirmed,and then,the standard of sustainable utilization of water resources in different years can be analyzed comparably.Thus,the deficiency of lack of reflection of coordination extent in water resources development standard,society and economy in traditional evaluation method is settled efficiently.The paper takes the sustainable utilization of water resources of Qingdao City in 2008 as the standard to compare and assess the water resources utilization in Jinan City.The paper also collects data of water resources in Jinan City from2001 to 2007.The result indicates that evaluation method is of feasibility and it is effective to the implementation of sustainable utilization strategy water resources in Jinan City.     

膨润土的原位柱撑改性及其除藻性能研究

利用Al³⁺离子较易水解聚合的性质,微波辅助合成了keggin Al₁₃原位柱撑改性膨润土(PMCs)除藻剂,并研究了PMCs的除藻性能。结果表明,相对于传统除藻产品,PMCs有更好的吸附混凝效果和除藻性能,且不会对环境水体的酸度、浊度、溶解氧等造成过大影响。