嫩江—齐齐哈尔江段几种蚌类重金属残毒水平

通过对嫩江几种蚌类不同部位重金属残毒分析，得了３种蚌类中背角无齿蚌的富集能力最强，不同部位中，足对总汞的富集能力强，外套膜对镉的富集能力最强，而鳃对铅，铜，锌富集能力最强。     

Metal concentrations in deciduous tree leaves from urban areas in Poland

Accumulation of metals in deciduous tree foliage fromurban areas in western-south Poland was monitored duringthe vegetation season of 2000 year. Concentrations of Al,Ba, Ca, Cd, Cr, Cu, Fe, Mg, Mn, Ni, Pb, Sr, Ti and Znwere measured in birch, willow, linden and maple leavesusing the ICP-AES method. Seasonal variations of metalconcentrations and their relations with sampling sitewere investigated. The most dynamic accumulation of Al,Cd, Cr, Ni and Pb was observed for examined species. Thehighest differences in element concentrations forinvestigated sites were found for Ba, Cd, Mn and Ni.Interelement correlations were investigated. In allfoliar samples synergistic relationships between Al–Crand Ca-Sr were found. Statistically significant negativecorrelations were observed only for Cd and Ti in birch leaves.     

运用能见度因子对大气稳定度参数的计算及和国标分类法的对比

分析了国际分类法的不足，引入能见度因子对大气稳定度参数进行计算，分别利用两种分类计算方法计算上海市市某气象站１９９６年逐时气象资料，再对比分析不同分类结果后，得出能见度因子对大气稳定度数的计算比国际分类法更接近实际情况。     

用Ca（OH）_2－PDADMA－PAM法絮凝处理制革废水

提出了用于水处理的Ｃａ（ＯＨ）＿２－ＰＤＡＤＭＡ－ＰＡＭ新方法，采用核法对兰州制革厂综合废水进行絮凝处理的研究．实验结果表明，该法对污染物的去除率高，絮凝剂用量少，沉降速度快，产生的污泥量小，并对多种水质的处理具有适用性．     

南水北调湖北库区水污染防治对策研究

进行了南水北调湖北库区水污染防治对策研究，结果认为，库区主要环境问题是ＣＯＤ及富营养化物质污染，个别河流存在，着汞污染问题，综合整 重点是加强重点工业源ＣＯＤ治理与生活污水集中处理，通过协调上下游关系解决汞污染问题；在工程治理的基础上尚需加强管理，推行总量控制排污许可证制度使库区各河流满足中线工程提出的水质标准。     

Green and blue fluorescing dinoflagellates in Bahamian waters

At three stations in Bahamas waters, in 1989, 15 to 30% of all the dinoflagellates >20µm diameter observed in near-surface waters fluoresced green under blue excitation light, 55 to 66% fluoresced red, and the remainder did not fluoresce at all. The abundance of these green-fluorescing dinoflagellates ranged from ca 5 to 10 cells l^–1 at the study sites. Under UV excitation, however, the dinoflagellates had a blue to blue-green appearance. Almost all the blue-green fluorescing dinoflagellates appeared to be heterotrophic, except for one species,Phalacroma rapa Stein, which also contained red-fluorescing (under blue light) chlorophylla. The emission spectra from all species examined were of three basic types. Type 1 typically had two fluorescence emission peaks (ca 440 and ca 510 nm). Type 2 spectra possessed one sharp peak at 495 nm. Spectra belonging to Type 3 had a broad peak around 470 to 480 nm. The green fluorescence thus is likely caused by different substances in individual species. The attempt to reconstitute observed spectra with nicotinamide adenine dinucleotide (NADH) and riboflavin 5-phosphate (FMN) solutions was unsuccessful.     

Processing and Physical Properties of Plastics Made from Soy Protein Polyester Blends

Blending soy protein with polyesters using a polyvinyllactam as a compatibilizer successfully made soy protein-based plastics. The polyesters used to produce blends included polycaprolactone (PCL) and Biomax (a commercial biodegradable polyester). The blends were processed by compounding extrusion and injection molding. Blends containing soy protein/Biomax-poly(vinyl alcohol) had tensile strengths ranging from 16–22 MPa, with samples containing larger percentages of the synthetic polymer exhibiting greater strengths. Blends made from soy protein, Biomax, and PCL had tensile strengths ranging from 27–33 MPa. All the blends had high Young's moduli but demonstrated brittle characteristics as evident from their low elongations at break, ranging from 1.8–3.1%. Plastics made from soy protein/polyester blends exhibited low water absorption and had good stability under ambient conditions relative to the plastics made from soy protein alone. Blends made from soy protein flour produced plastics with the lowest water absorption.     

正确认识绿色贸易壁垒

绿色贸易壁垒能促进广大发展中国家不断提高产品的环境保护水平,保护本国的生态环境,但在环保大潮的冲击下,一些贸易企业会由于产品不符合要求而面临出口困境。本文以绿色贸易壁垒产生的原因及应采取的措施等方面进行论述,指出绿色贸易壁垒既是挑战又是机遇,要正确认识绿色贸易壁垒。     

人为的灾害——红潮

介绍了赤潮对人类健康和海洋环境的危害。列举了近20年来中国沿海发生的严重赤潮事件，提出不同条件下赤潮灾害的预防措施。