趋势面方法在大气污染物观测与分析中的应用

提出了大气污染物观测是与分析中的一种新的方法——趋势面方法。这种用多项式函数模拟的趋势面可以找出城市大气降尘的总的趋势变化,还可以找出受局部因素影响具有局部特点的变化。      

二氧化硫在潮湿气溶胶表面的氧化速率研究

将稳定同位素方法应用于闽南地区SO₂在潮湿气溶胶表面氧化动力学研究中,在对大气中SO₂的稳定硫同位素及大气气溶胶中可溶性硫的硫稳定同位素丰度的测定的基础上,用硫稳定同位素动力学方程计算SO₂在潮湿气溶胶表面氧化速率与均相氧化速率比?结果表明:漳州地区潮湿气溶胶表面SO₂非均相和均相氧化速率之比:K非/K均为1.13,厦门地区SO₂非均相和均相氧化速率之比:K_非/K_均为0.36,这种差异主要是由相对湿度不同引起的。      

闽南地区生态环境对酸沉降的临界负荷研究

报道了闽南生态环境对酸沉降临界负荷的研究结果。考虑到干、湿２种沉降形式,试用了１种新的酸沉降临界负荷计算方法:用树木和农作物的SO₂容量代表酸性干沉降的临界负荷,用土壤酸缓冲容量计算酸性湿沉降的临界负荷。结果表明:闽南的干、湿酸沉降临界负荷均大大高于现实酸沉降负荷      

广州地区能源结构与污染控制战略的思考

广州地区的能源结构以燃煤为主,针对广州的实际和未来的发展态势,为实现2000年全市二氧化硫排放总量控制在1994年的水平,就如何削减二氧化硫排放量提出其控制战略和防治措施,阐述了控制和削减二氧化硫基本政策要点总体方案思路。      

一株兼性自养菌硫转化性能的研究

研究了一株具有硫转化性能的兼性自养菌的培养特性,以及不同因素对该菌硫转化纺的影响,结果表明：有机物可促进细菌的生长,合适的氮源、适宜的ｐＨ、添加微量元素,可提高该菌的硫转化率。在约１％接种量时,硫转化率可达８７．４２％。     

A Comparison of Precipitation Sensors Used on the Wet-Only Collectors

The variability in performance of three precipitation sensor types, mounted on three identical wet-only collectors, has been compared for eight months at a single site. The catch efficiencies, determined from the sample volumes, are relatively high for these three apparatuses, since they exceed 89% on average. The recorded data of openings and closings of collector lids reveal that the highest losses of collection efficiency, observed for rainfalls of low intensity and low amount, are largely imputable to design and running characteristics of each sensor. Ionic compositions between the samples of these three collectors are relatively close, although significant differences are especially found for H⁺, Ca²⁺, Mg²⁺ and K⁺, suggesting that these apparatuses are differently exposed to the dry deposition of soil particles. The RS 85 sensor seems to be the most suitable one of the three, since it ensures a high catch efficiency for all rain types and tends to limit the exposures of funnel to the dry deposition.     

气相色谱法测定水和气体样品中的二硫化碳

本文研究了用气相色谱电子捕获检测器测定水和气体样品中二硫化碳的方法。本方法采取顶空进样法测水质样品,直接进样测气体样品。色谱柱为ＧＤＸ—１０１填充柱。方法简单,灵敏度高,水质样品最低检出浓度可达００００５ｍｇ／Ｌ,气体样品最低检出浓度达０００５ｍｇ／ｍ３。方法的精密度为５７％,回收率为９０３％。     

Arsenic and sulfur nanoparticle synthesis mimicking environmental conditions of submarine shallow-water hydrothermal vents

Arsenic and sulfur mineralization is a natural phenomenon occurring in hydrothermal systems where parameters like temperature and organic matter(OM) can influence the mobilization of the toxic metalloid in marine environments. In the present study we analyze the influence of temperature and OM(particularly sulfur-containing additives) on As and S precipitation based on the recent discovery of As-rich nanoparticles in the hydrothermal system near the coast of the Greek island Milos. To this end, ...     

硫化碱脱除二氧化硫工业烟气的可行性分析

分析了国内外烟气脱硫的研究现状,论述了用硫化碱脱除二氧化硫化工业烟气在理论上和实验上的可能性。     

植物对酸沉降的净化缓冲作用研究综述

从植物对ＳＯ２的吸收作用、森林冠层对湿沉降的缓冲作用以及森林枯枝落叶层对酸沉降的吸收缓冲作用３个方面介绍了国内外在植物对酸沉降的净化缓冲作用方面的研究成果。