Agriculture, pesticides, food security and food safety

Decades ago, agrochemicals were introduced aiming at enhancing crop yields and at protecting crops from pests. Due to adaptation and resistance developed by pests to chemicals, every year higher amounts and new chemical compounds are used to protect crops, causing undesired side effects and raising the costs of food production. Eventually, new techniques, including genetically modified organisms (GMOs) resistant to pests, could halt the massive spread of agrochemicals in agriculture fields. Biological chemical-free agriculture is gaining also more and more support but it is still not able to respond to the need for producing massive amounts of food. The use of agrochemicals, including pesticides, remains a common practice especially in tropical regions and South countries. Cheap compounds, such as DDT, HCH and lindane, that are environmentally persistent, are today banned from agriculture use in developed countries, but remain popular in developing countries. As a consequence, persistent residues of these chemicals contaminate food and disperse in the environment. Coordinated efforts are needed to increase the production of food but with a view to enhanced food quality and safety as well as to controlling residues of persistent pesticides in the environment.     

NOx排放统计方法综述

随着大气中NOx污染日益加重,"十一五"期间,我国拟将NOx纳入环境统计范围.通过广泛调研国内外文献,总结和分析了我国NOx排放量统计的研究现状,同时提出了相关建议.     

用于气相色谱分析的样品导入技术及其应用

综述了几种用于气相色谱分析的绿色环保型样品导入技术,如静态顶空技术、吹扫捕集技术、固相微萃取技术和热脱附技术的原理及应用情况,并对这几种方法进行了比较。