福建省二恶英类持久性有机污染物污染状况调查

为摸清福建省二恶英类POPs排放情况,保障人民健康,全省环保部门发挥职能,深入调查。本文介绍了本省2007年度二恶英类POPs排放源的调查方法、调查对象、排放源清单的形成等工作,并对调查工作中存在的问题提出建议。     

持久性有机污染物的污染现状与控制对策

介绍了持久性有机污染物的分类、特性及其对环境和人类健康的危害,综述了持久性有机污染物在我国的生产、使用现状,重点分析了持久性有机污染物对水体、大气和土壤的污染现状,提出了持久性有机污染物的控制对策。     

福建省二恶英类持久性有机污染物污染状况更新调查

为明确福建省二恶英类POPs排放情况,保障人民健康,全省环保部门发挥职能,深入调查。本文介绍了本省2009年度二恶英类POPs排放源的更新调查目的、调查对象、排放源清单的形成等工作,并对调查工作中存在的问题提出建议。     

国内持久性有机污染物环境监测现状

持久性有机污染物的存在对于我国的环境监测与治理工作是一种威胁和挑战,本文将通过分析持久性有机污染物的基本概念,来阐述对其进行监测的重要性;并根据我国目前的监测现状与监测方法,提出几项具体策略,以期我国的环境监测工作高效、有序地进行。     

持久性有机污染物现状及处理方法的研究

持久性有机污染物(POPs)是一类具有环境持久性、生物累积性、长距离迁移能力和高生物毒性的特殊污染物.本文介绍了持久性有机污染物的定义,来源,特性.概述持久性有机污染物在我国的污染现状,并探讨我国持久性有机污染物处理方法的研究进展.     

持久性有机污染物及其治理技术

主要介绍了持久性有机污染物的特点、种类、危害及治理技术。     

持久性有机污染物的研究进展

人类在享受工业化所带来的便利的同时。越来越受到它引起的环境问题的困扰。持久性有机污染物作为工业化的伴生物对人类造成的危害是巨大的。该文对持久性有机污染物的特性、危害以及治理方法作了较为全面的综述。并得出了一些有益的结论。     

浅议持久性有机污染物POPs

简单介绍了持久性有机污染物(Persistent Organic Pollutants)的定义,阐述了持久性有机污染物POPs的来源、分类、特性、污染现状、危害及其治理技术.     

斯德哥尔摩尔公约与持久性有机污染物

斯德哥尔摩公约要求各国要限制持久性有机污染物质的生产,使用,贸易和处置。在我国三胶工业生产中,有的品种,有的生产环节还不同程度使用某些POP(持久性有机污染物质,persistant organic pollutants)。最明显的要算由鞣革下脚料制明胶的去铬工艺中,还大量地使用多氯苯。每年年度检修时,也有使用某些灭菌剂的情况。我们把此文介绍给大家,希望有更多的人来关心POP的污染和代用品的开发问题。     

国际上持久性有机污染物的控制动向及其对策

概述了列入联合国环境规划署（ＵＮＥＰ）控制名单的１２种持久性有机污染物的性质及其对人体健康与环境的危害;介绍了ＵＮＥＰ和联合国欧洲经济委员会（ＵＮＥＣＥ）的相应控制工作,美国、加拿大和墨西哥３国的北美妥善管理化学品工作组关于ＰＯＰｓ物质控制对策动向以及化学品协会国际理事会（ＩＣＣＡ）专家组推荐的关于需采取国际行动的ＰＯＰ物质的判定基准和筛选程序。还对我国ＰＯＰ物质控制对策提出了建议     

气质联机测定水中杀虫剂类持久性有机污染物

气质联机测定水中杀虫剂类持久性有机污染物 (POPs) ,采用选择离子扫描方式 (SIM) [1] ,内标法定量[2 ] ,可以排除干扰 ,选择性强 ,使难分离化合物得到有效分离。测定结果表明 ,回收率在 82 0 %～94 2 %之间 ,检出限在 0 0 4 3～ 0 10 9ng·mL-1之间 ,最低定量浓度在 0 14 5～ 0 36 3ng·mL-1之间     

北京市持久性有机污染物统计调查与分析

以2019年北京市主要行业持久性有机污染物(POPs)统计结果为基础,分析了北京市POPs污染重点行业和地区,并结合前2年的统计数据,对POPs排放的变化趋势和原因进行了研究,提出了北京市POPs污染防治对策建议.     

高级氧化技术在持久性有机污染物处理中的应用

介绍了持久性有机污染物(POPs)的相关概念和性质,对几种典型的高级氧化技术在POPs处理中的应用现状作了较为详细的阐述,总结了各相关技术的基本原理及研究进展,并对其应用前景进行了评述。     

Removal of selected persistent organic pollutants by heterogeneous photocatalysis in water

Environmentally relevant polar persistent organic pollutants (pharmaceuticals and diagnostic agents) were chosen according to human consumption and occurrence in the aquatic environment (sewage plant effluents, rivers and groundwater) to investigate their behavior during photocatalytic oxidation. From data compilation in the literature, the active metabolite clofibric acid of some lipid lowering agents, the anti-epileptic drug carbamazepine and the X-ray contrast media iomeprol were selected. The degradation of the persistent pollutant was monitored by HPLC/DAD/FLD. The study also focuses on the identification and quantification of possible degradation products by HPLC/DAD/FLD and HPLC/MS/MS. The degradation process was also monitored by determination of sum parameters and inorganic ions. Various aromatic and aliphatic degradation products have been identified and quantified. From analytical data, a possible degradation scheme for carbamazepine was proposed. Kinetic studies showed that the TiO₂ photocatalyst P25 was more active in clofibric acid degradation than Hombikat UV100. For photocatalytic degradation of iomeprol Hombikat UV100 was more suitable than P25. In general the presence of NOM and carbamazepine retarded the photocatalysis of clofibric acid. Radiation attenuation, competition for active sites and surface deactivation of the catalyst by adsorption are the reason for that. The results of this work proof that photocatalysis is a promising technology to reduce persistent substances even if they are present in low concentrations or in a complex matrix.     

电催化氢化还原去除水体卤代有机物研究进展

氯代有机物是典型持久性有机污染物,对人类和环境造成了巨大威胁。在已报道的污染修复技术中,电催化脱氯技术因其反应连续高效、设备简单、无二次污染等优点,成为研究的热点。着重综述了当前电催化氢化还原技术在反应机制、电子传递路径、反应决速步骤和效能调控策略等方面的研究进展,同时指出该技术尚存的问题,并对其应用前景作出展望。     

Noble metal-doped perovskites for the oxidation of organic air pollutants

Ag-Pt- and Pd-doped LaMnO₃-based perovskite catalysts were prepared and their activity in the oxidation of toluene, n-heptane and ethanol was investigated. The activity of LaMnO₃-based catalyst was very high in the oxidation of each compound tested. The Ag-doped catalyst was the most active in the oxidation of each compound and it displayed the highest BET specific surface area (SSA) also. The influence of Pt or Pd doping on perovskite activity is negligibly small. Pt-doped catalysts are slightly more active while Pd-doped catalysts are slightly less active than the pure perovskite. Thermogravimetric-differential thermal analysis (TG-DTA) for the catalyst precursor indicates that above 500 °C a perovskite structure began to form. The XRD analysis reveals the presence of the LaMnO_3.15 perovskite phase and, additionally, the presence of some metal oxide phases (e.g. La₂O₂CO₃, Mn₂O₃) and carbon. BET SSA measured after the oxidation tests was found to decrease for each catalyst. There was no relation between the chemical composition of the catalyst and the loss of SSA.     

The catalytic oxidation of organic air pollutants. Part 3. Catalysts from manganese and copper sulphates

Manganese sulphate and copper sulphate were evaluated as the basis of catalysts for the control of organic air pollutants responsible for malodorous process emissions. Tests were made with low concentrations, 100 volumes × 10^?6 in air, (i.e. 100 parts × 10^?6 by volume), of methyl mercaptan or mercaptan + n-butanal as a function of temperature and time to determine efficiencies for destructive oxidation. The complex pattern of odorant removal and product formation observed using manganese sulphate is discussed in terms of active sites which convert mercaptan to SO₂ but are inhibited by the onset of dimethyl disulphide formation at higher temperatures; reactions between the odorants may also occur. Copper sulphate formed dimethyl disulphide at the lower temperatures but only SO₂, SO₃, CO and CO₂ were detected above 300°C; after a 100 h durability test at 400°C, the odour removal efficiency determined by dynamic dilution olfactometry was 99.9%. Hence copper sulphate is preferable to manganese sulphate and is equal in performance to the copper oxide tested previously (Part 1) but with the advantage of a stable performance from the outset under sulphating conditions.