广西发布国内首个工业主要行业循环经济评价考核地方标准

广西自治区质量技术监督局将《广西主要工业行业循环经济评价指标体系》作为地方标准正式发布并实施。这是国内首个工业主要行业循环经济评价考核地方标准。该标准依据循环经济的基本原则,将反映工业企业循环经济发展水平的主要因素（资源产出、资源消耗、资源综合利用、废物排放）加以分析和合理综合,确定了由一级指标、二级指标、三级指标（国家能耗限额和清洁生产的合格指标）构成的具有递进阶梯层次结构的三级量化指标,     

土壤中重金属测定方法探讨

采用硝酸+氢氟酸+高氯酸全分解方法消解土壤样品,并结合原子吸收分光光度法和标准加入法测定土壤中、锌、铅、镉、镍、总铬的含量.结果表明,该方法具有操作简便、快速,节省试剂,准确可靠等特点:实际土壤样品的检测结果完全能满足环境土壤样品测定的要求.     

基于GIS的中国物质积累基础评价：从分县到分省

一个地区的发展是众多因素发展的积累,这种积累离不开资源的利用与转化。地区发展的结果往往直接体现在物质财富的生产和积累上。因此可以从资源角度出发,在资源转化视角下,以区域物质财富为着眼点来反映区域发展进程。基于此,提出物质积累基础概念,从基础设施水平、交通通达度、经济发展水平3方面,构建物质积累指数模型;运用GIS技术和数理统计方法,以2005年为例,定量计算中国分县物质积累指数,集成分省物质积累指数,从分县和分省两个尺度系统评价了中国物质积累水平。研究结果表明：①从分县尺度看,2005年中国县域物质积累水平高低两端差异悬殊,中等水平占主体,呈现明显的“纺锤形”结构,空间分布不均衡,东南半壁物质积累水平明显优于西北半壁;中国贫困地区物质积累水平相对滞后,城市地区相对超前,两类典型地区经济发展水平差距最为显著;②从分省尺度看,中国分省物质积累水平差异显著,地域分布呈现“东高西低”的空间格局;不同等级水平间基础设施水平差距最大,是引起省域尺度上物质积累状况差距的显著因子。     

A novel aminated polymeric adsorbent for removing refractory dissolved organic matter from landfill leachate treatment plant

Refractory dissolved organic matter (DOM) from landfill leachate treatment plant was with high dissolved organic carbon (DOC) content. An aminated polymeric adsorbent NDA-8 with tertiary amino groups and sufficient mesopore was synthesized, which exhibited high adsorption capacity to the DOM (raw water after coagulation). Resin NDA-8 performed better in the uptake of the DOM than resin DAX-8 and A100. Electrostatic attraction was considered as the decisive interaction between the adsorbent and adsorbate. Special attention was paid to the correlation between porous structure and adsorption capacity. The mesopore of NDA-8 played a crucial role during uptake of the DOM. In general, resin in chloride form performed a higher removal rate of DOC. According to the column adsorption test, total adsorption capacity of NDA-8 was calculated to 52.28 mg DOC/mL wet resin. 0.2 mol/L sodium hydroxide solution could regenerate the adsorbent efficiently.     

Partitioning of water soluble organic carbon in three sediment size fractions： Effect of the humic substances

Water soluble organic carbon (WSOC) in sediments plays an important role in transference and transformation of aquatic pollutants. This article investigated the inherent mechanisms of how sediemnt grain size affect the partitioning coeffcient (k) of WSOC. Influences of NaOH extracted humic substances were particularly focused on. Sediments were sampled from two cross-sections of the middle Yellow River and sieved into three size fractions (< 63 μm, 63-100 μm, and 100--300 μm). The total concentration of WSOC in sediments (CWSOC) and k were estimated using multiple water-sediment ratio experiments. Results show that CWSOC ranges from 0.012 to 0.022 mg/g, while k ranges from 0.8 to 3.9 L/kg. Correlations between the spectrum characteristics of NaOH extracted humic substances and k were analyzed. Strong positive correlations are determined between k and the aromaticity indicators of NaOH extracted humic substances in different sediment size fractions. Comparing with finer fractions (< 63 μm), k is higher in larger size fractions (63--100 and 100--300 μm) related to higher aromaticity degree of NaOH extracted humic substances mostly. While negative relationship between k and the area ratio of fourier transform infrared spectroscopy (FT-IR) at 3400 and 1430 cm-1 implied that the lowest k was related to the highest concentration of the acidic humic groups in particles < 63 μm. WSOC in finer fractions (< 63 μm) is likely to enter into pore water, which may further accelerate the transportation of aquatic contaminants from sediment to water.     

加州拟严格饮水标准

美国时间8月20日,加州在饮用水标准制定上迈出了第一步：针对六价铬在饮用水中的含量做出了严格规定,该标准将使得加州各城市和水供应区域不得不进行高成本的水处理。这是美国首个对饮用水中六价铬含量标准做出的规定。从环境健康危害评估办公室公布的信息看,六价铬的标准将被作为加州全州的目标来使用。     

对辽宁省《污水综合排放标准》（DB21／1627—2008）的探讨

辽宁省新的污水排放标准已于2008年8月1日正式颁布实施,相比原有标准以及国家标准,新标准体现了全面性、严格性和公平性的特点。在新标准的要求下,全省污水排放企业将如何应对？本文在这些方面进行了探讨。     

我国物质流研究述评

在分析我国近年来物质流研究成果的基础上,探讨目前研究存在的问题,并提出今后物质流研究应在以下几方面作出努力:建立学术平台、研究基地,加强学术交流;建立统一的分析和计算的框架和具体系数的估算方法;把物质流分析的成果与具有社会价值的经济、人口、土地等因素结合分析,与国外进行对比,找出我国的问题所在;建立我国或者特定区域的隐藏流系数的实时分析模型;物质投入产出表的编撰与研究;对我国未开展物质流研究的典型区域进行物质流分析。     

齐鲁储运厂为职工"我要安全"提供物质保障

齐鲁石化储运厂从保证职工健康出发,制定了《储运厂劳动防护防护用品管理规定》,根据岗位工作性质,配备具有不同防护性能的劳保护品。为酸碱岗位的职工配备了防酸碱工作服,铁路职工配备了带有安全色和反光材料的铁路服装,洗槽岗位职工配备了防毒口罩等,完善了作业防护,为职工“我要安全”提供了物质保障,     

危险物质流体传输系统的紧急隔离——自动切断阀的应用及其局限性

作为一种保护性设备,自动切断阀的主要作用是防止在运输或储存过程中有害物质因泄漏而失去控制。当流体通过自动切断阀的流速超过正常的预定范围时（如下游发生泄漏或阀门、管件等出现问题）,该阀门就应该关闭,将泄漏控制住,直到发生泄漏的部位被堵住或被隔离。但很多事例表明,由于使用不当,有些自动切断阀并未起到其应有的作用。因此,在预防储罐或管线中的化学物质意外泄漏时,