说雾的危害

首先，雾有较强的吸附性，雾滴在低空飘移时，在不断与污染物碰撞，能使污染物积聚，让雾的有害成分大增。据测定，雾滴中酸、胺、酚、重金属微粒、尘埃、病茵含量比通常大气高出几十倍。     

浅谈碳氢氮元素分析仪的使用和发展

煤中碳、氢、氮元素的分析是煤质分析中的重要组成部分。随着科学技术的不断进步,煤中碳、氢、氮元素的分析方法逐渐由传统经典方法向碳氢氮元素分析仪分析方法发展。碳氢氮元素分析仪现如今已经广泛应用于各个行业实验室中,大大提高了工作效率,同时还可以通过观察仪器配套软件相关参数判断何时更换吸收剂等,避免造成资源浪费。     

Effect of Earthworm（Pheretima sp.） Density on Revegetation of Lead/zinc Metal Mine Tailings Amended with Soil

The objective of this study was to investigate the effects of earthworm density on the availability of nutrients and heavy metals in metal contaminated soils. Pb/Zn mine tailings were mixed throughly with a red yellow podzolic soil at the ratio （w/w） of 75：25. Earthworms （Pheretima sp.） were introduced to the mixture at four different densities, zero, three, six and nine individuals per pot planted with ryegrass （Loliun multiflorum）. The results indicated that earthworm activity significantly enhanced ryegrass shoot biomass. However, as denser earthworm population was introduced, shoot biomass tended to decrease. Earthworm activity significantly increased soil pH and availability of N, P and K in the tailings and soil mixture. There was a general tendency that uptake of Zn by ryegrass increased after earthworm inoculation, although the increase in extractable Zn in tailings and soil mixture was not significant. On the contrary, there seemed to be a lower uptake of Pb by ryegrass under earthworm inoclation, despite the fact that higher extractable Pb concentrations were observed. The present project indicated that the improved growth of ryegrass was due to improved nutrient availability and other soil conditions, by inoculation of earthworms at an appropriate rate. Further studies are needed to illustrate the relationship between metal availability and earthworm activity in the field.     

水质高锰酸盐指数在线自动分析仪的发展现状

对水质高锰酸盐指数在线自动分析仪的方法原理、主要类型、主要技术性能以及主要仪器型号等发展现状进行了评述。     

金属冶炼工艺重大危险因素分析及预防措施

从冶金企业金属冶炼生产的特点着手,通过统计近年来金属冶炼过程中发生的较大及以上的典型事故案例,分析金属冶炼过程中的重大危险因素及可能导致的事故后果,提出了相应的预防措施。     

水中重金属在线监测技术研究

随着重金属污染的家居,水中重金属在线监测技术的需求日益迫切。本文简要分析了当前几种主要的重金属在线监测技术,并探讨了水中重金属在线监测技术存在的问题及发展趋势,旨在进一步促进水中重金属在线监测技术的应用和发展,为我国重金属污染防治作出贡献。     

在线监控管住扰民的油烟

正油烟在线监控系统的投入使用,不仅为环保部门解决了油烟监管难问题,而且缓解了油烟扰民现象。饭菜飘香,本是享受,可天天闻着油烟就遭罪了。近年来,为解决城市餐饮油烟扰民和监管难等问题,部分地区环保局试点建设了油烟在线监控系统项目,并取得了初步成效,为进一步推广这一做法,广东计划在珠三角各地级以上市选择典型区域开展规模化餐饮油烟在线监控试点,建立长效机制,管住扰民的油烟。