城市街道空气中铅污染及其对机体无机盐影响的研究

本文对兰州市不同交通路口铅污染现场监测及交警人群健康体检，结果表明各路口受汽车尾气污染严重，铅浓度在１．１６～２．６４μｇ／ｍ３之间。将１２０名交警分外勤警７０人作为污染组，内勤警及户藉警５０人作为对照组，调查结果尿中δ－氨基乙酰丙酸两组比较没有统计学差异（Ｐ＞０．０５）；污染组发铅、尿铅浓度均显著高于对照组，发锌、铜、钙及血中ＩｇＡ、ＩｇＧ、ＩｇＭ均低于对照组，并具有统计学差异（Ｐ＜０．０５，Ｐ＜０．０１）。提示街道空气铅污染对交警体内无机盐水平及机体免疫能力具有一定的影响。     

Biodegradation Behaviors of Poly(p-dioxanone) in Different Environment Media

This work was aimed at researching the aerobic biodegradation of poly(p-dioxanone) (PPDO), a novel kind of degradable polymer material, by simulating real-life conditions in a laboratory-scale test, specified by the standard methods based on two biodegradation environments, composting and aqueous media. To measure and describe the biodegradability of PPDO, not only had carbon dioxide produced by respiratory metabolism of microorganism been measured, which determines the ultimate aerobic biodegradability of chemical compounds, but also the detailed results of biodegradation were further characterized by monitoring physical, chemical and thermal properties changes of test materials at different incubation times in the two media, confirmed by using the appropriate analytical techniques. Scanning electron microscopy was used to observe the surface morphology, and the thermal performance of PPDO was characterized by differential scanning calorimetry. The changes of molecular weight were detected by intrinsic viscosity ([η]) and gel permeation chromatography, and the variations of the molecular structure were monitored by the nuclear magnetic resonance and FT-IR. The results show that PPDO has outstanding character of biodegradation and may be more adapted for biodegrading in liquid medium than in composting.     

基于数量化理论Ⅱ的鄂西北山区坡面土壤侵蚀强度评价

水土流失既是资源问题，又是生态环境问题。土壤侵蚀对人类生存和发展构成了严重威胁，成为制约可持续发展的障碍因素。以鄂西北丹江口库区郧西县坡面径流小区为试验点，通过分析小区的实地观测数据，建立坡面土壤侵蚀定性评价指标体系，并将数量化理论II作为有效的数学方法，建立郧西县坡面径流小区土壤侵蚀强度评价模型，对参与建立模型的样本进行回归分析，其准判率达到800%以上，并且利用该模型对其他年份坡面土壤侵蚀强度实测数据进行对比验证，得到土壤侵蚀强度分级的精度较高。研究表明，建立的郧西县坡面径流小区土壤侵蚀强度评价模型有较好的适用性与可靠性，可为郧西县及类似自然地理环境的其他区域水保工作起到一定指导意义     

人与居室环境

本文通过对居室环境概念的阐述,剖析了人与居室环境功能的关系,并指出了居室环境对人行为的规范作用及营造良好居室环境的重要性。     

简述如何审核桂林市全国第一次污染源普查数据的真实性

现行的污染源普查数据审核的方法只能保证数据的合理性.通过对重要的指标数据进行横向比较,可以在一定程度上保证数据的真实性.     

三标整合的HSE管理体系实施要点

介绍了职业健康安全管理体系、环境管理体系、中国石化HSE管理体系三标整合管理体系实施要点.