UNEP鼓励公私合作应对ODS的非法ODS贸易

ODS的非法贸易，主要是CFCs的非法贸易，在过去的几年里，已经成为一个重大的全球性问题，特别是在亚洲．当这个地区依然存在大量依赖CFCs的设备的时候，各国已经承诺要遵守蒙特利尔议定书的淘汰计划，减少这些化学物质的消费与生产．CFCs的走私日渐猖狂，已经阻滞了替代化学品的采用．     

苯酚对两种微囊藻生长的作用效应

用不同浓度的苯酚处理无毒铜绿微囊藻和有毒铜绿微囊藻。结果显示不加苯酚处理时，有毒藻生长量明显高于无毒藻；100μg／mL的苯酚促进无毒藻生长而抑制有毒藻的生长；苯酚浓度增至200μg／mL，无毒藻的生长才受到抑制。高浓度苯酚胁迫下的藻细胞：光合速率大幅度降低；可溶性蛋白含量减少；细胞膜透性增大；超氧阴离子(O2^-)产生速率和丙二醛(MDA)相对含量升高；超氧化物歧化酶(SOD)活性降低。这些变化有毒藻较无毒藻更显著。表明：有毒微囊藻是水华中的优势种群；两种藻中有毒藻对苯酚的敏感性更大。     

有毒药物安全操作台防止空气污染作用分析

分析了9112－B型有毒药物安全操作台的污染物去除效率，得出了该操作平台避免了有毒药物对操作者的侵害，减少了有毒药物对环境污染的结论。     

微界面理论及模式在环境水质学中的应用

介绍了微界面理论的核心内容及其在有机有毒化学品、悬浮沉积物、水处理药剂等环境水质学中的应用。     

警惕隐藏在“美”背后的杀手

爱美之心，人皆有之。随着人民生活水平的提高，化妆品与人们日常生活的关系也日益密切，形形色色的化妆品早已不再单单是众多女性所青睐的“专利”而成为男女老幼的共同选择。然而，在充分享受化妆品给我们所带来的“美”的同时，如何正确和安全的使用化妆品、防止“美”给我们带来的污染却常常为人们所忽视。化妆品的污染可分为两种：一是由于化妆品本身所含物质和不合格等原因而造成的污染，二是是由于销售者、消费者的不正确贮存和使用而造成的二次污染。化妆品本身的污染美国食品药品管理局（FoodandDrugAdministration,FDA)将化妆…     

环境能杀人 你信吗

人类和野生动物还能繁衍后代吗?人们之所以产生这样的担心,原因在于环境中存在着一种悄悄攻击人与动物的可怕杀手,人们把它叫做“环境激素”.环境激素与地球变暖、臭氧层遭到破坏一样,已经成为世纪之交人类关注的全球性问题.     

有毒物质事故泄漏对河流污染的数学模拟

通过对有毒物质事故泄漏行为的数学模拟分析，提出了一种计算有毒物质河流断面超标风险率的方法，并通过实例模拟分析，探讨了在一定条件下，即为确保饮用水质的安全，把超标风险率控制在一定范围内，应采取的措施。     

科学狂人文特尔演练生命自造模式

这是世界上第一个人造细胞。我们称它为＂人造儿＂,因为这个细胞完全来自于合成的染色体,用4瓶化学物质在一个化学合成器下制造出来的。这是地球上第一个父母是电脑、却可以进行自我复制的物种。——克雷格·文特尔     

Variation of grain Cd and Zn concentrations of 110 hybrid rice cultivars grown in a low-Cd paddy soil

Enhanced Cd uptake and Zn depletion in rice grains and high potential for food Cd exposure by the high-yielding hybrid cultivars of China had been addressed. A field experiment was conducted in 2006 to determine the di erence in grain Cd and Zn between cultivars. Total 110 cultivars including super rice and common hybrid rice cultivars were grown on a single paddy soil (Entic Haplaquept) with a neutral reaction and low total Cd content. Grain Cd and Zn concentrations were determined with graphite atomic adsorption spectrophotometer (GFAAS) and flame atomic adsorption spectrophotometer (AAS) respectively.Wide variation of Cd content in grain was found in a range of 0.004–0.057 mg/kg, while the Zn content in a range of 10.25–30.06 mg/kg among the cultivars. Higher Cd but lower Zn concentration in grains of super rice cultivars was observed compared to the common hybrid ones. A highly significant positive linear correlation of grain Cd/Zn with grain Cd was found for super rice and common hybrid cultivars, meanwhile much higher slope for these hybrid cultivars than the reported non-hybrid cultivars was also observed. Using the limit value of the Chinese chemical guidelines for foods (MOHC and SSC, 2005), calculated potential risk of food Cd exposure with “Zn hungry” through diet intake was prominent with all the studied 110 hybrid rice cultivars, possessing high potential health problems for rice production in South China using the super rice cultivars. Breeding of genotypes of rice cultivars with low grain Cd and low Cd/Zn ratio is needed for rice production in acidic red soils where Cd bioavailability is prevalently high.     

Bioaccumulation and depuration of chromium in the selected organs and whole body tissues of freshwater fish Cirrhinus mrigala individually and in binary solutions with nickel

Contamination of aquatic ecosystems with heavy metals has been receiving increased worldwide attention due to their harmful e ects on human health and other organisms in the environment. Most of the studies dealing with toxic e ects of metals deal with single metal species, while the aquatic organisms are typically exposed to mixtures of metals. Hence, in order to provide data supporting the usefulness of freshwater fish as indicators of heavy metal pollution, it has been proposed in the present study to investigate the bioaccumulation and depuration of chromium in the selected organs of freshwater fingerlings Cirrhinus mrigala, individually and in binary solutions with nickel. The results show that the kidney is a target organ for chromium accumulation, which implies that it is also the “critical” organ for toxic symptoms. The results further show that accumulation of nickel in all the tissues of C. mrigala is higher than that of chromium. In addition, the metal accumulations of the binary mixtures of chromium and nickel are substantially higher than those of the individual metals, indicating synergistic interactions between the two metals. Theoretically the simplest explanation for an additive joint action of toxicants in a mixture is that they act in a qualitatively similar way. The observed data suggest that C. mrigala could be suitable monitoring organisms to study the bioavailability of water-bound metals in freshwater habitats.