基于.NET框架的矿区环保信息系统网络模式探讨

根据工作需要以及网络基础设施条件,兖矿集团公司环保网络信息系统开发采用了C/S B/S混合模式结构,在开发平台上选取了.NET,利用.NET的XML Web Service及ASP.NET技术,实现系统跨平台操作及容错处理,提高系统的运行性能.     

家长吸烟对儿童尿中1-羟基芘的影响

为了解家长吸烟对小学生尿中１－羟基芘的影响,对４个地区小学生２３４份尿样中的１－羟基芘及其学校所在地空气中的苯并芘进行了同步采样分析,结果显示,学生尿中的１－羟基芘浓度与所在学校空气中苯并（ａ）芘的浓度有显著的正相关关系。家长吸烟组学生尿中１－羟基芘浓度均高于家长不吸烟组,但ｔ检验结果差别不显著,根据测定结果的分析,讨论了这种差别的意义。     

黑箱理论用于甲醇废水的色谱分析

利用黑箱理论对色谱条件进行了优化。对于甲醇废水,由ＧＣ／ＭＳ定性,用ＧＤＸ－２０３＋５％聚乙二醇－２０Ｍ作固定相,ＦＩＤ检测。建立了分析甲醇废水中痕量级Ｃ１－Ｃ５醇的气相色谱分析方法。检测下限：Ｃ１－Ｃ３醇为１μｇ／ｍｌ,Ｃ４醇为３μｇ／ｍｌ。     

微波紫外协同降解染料活性艳红X-3B研究

将微波激发的无极紫外灯应用于染料废水的处理研究,考察了反应过程中染料废水脱色率、TOC去除率、溶液pH以及反应前后染料废水高效液相色谱图的变化情况。染料活性艳红X-3B经无极紫外光处理110min后,脱色率达96％,TOC去除率达66％,降解效果明显好于单独使用微波或普通紫外灯的降解效果总和,溶液pH先降低后缓慢升高。     

灰色系统理论在湖泊水质预测建模中的应用

本文将灰色系统理论应用于湖泊水质预测建模研究,提出了湖泊水质预测的建模方法,并建立了某湖化学需氧量(COD)的GM(1,1)预测模型。      

Determination of polycyclic aromatic hydrocarbons and substitutes (Nitro-, Oxy-PAHs) in urban soil and airborne particulate by GC-MS and NCI-MS/MS

A method involving high resolution gas chromatography combined with ion trap (HRGC-MS/MS) and negative chemical ionisation (NCI) was developed for the determination of nitrated or oxygenated polycyclic aromatic hydrocarbons (nitro-PAHs, oxy-PAHs) and other electrophilic substitutes in soil samples. Efficient clean-up was achieved by a combination of methods for the determination of PAHs in soil and nitro-PAHs in aerosol using solid phase extraction (SPE) and semipreparative high performance liquid chromatography (HPLC). In samples of surface soil from the city of Basle (Switzerland), nitro-PAHs (mainly 3-nitrofluoranthene and 1-nitropyrene) were found in concentrations between 30 and 800 ng/kg dry weight. Oxy-PAHs and parent PAHs revealed 10²-10⁴-fold higher levels. Nitro-PAHs which are up to 10⁵ times more mutagenic seem to be less persistent in soil than the parent forms, although their entire mutagenic potential has to be estimated as being on the same order of magnitude. In urban air particulate matter, the amounts of nitro-PAHs (2–62 pg/m³) were 10–100 times lower than oxyPAHs and parent PAHs which were both found in a similar range. 3-nitrobenzanthrone, a recently described suspected human carcinogen has not yet been detected. Using multivariate statistical analysis, it was possible to elucidate similarities or special characteristics of substances in a given matrix reflecting their chemical properties or specific emission sources.     

华北南部重污染城市周边区域二次气溶胶的化学特征及来源解析

为探究华北南部地区重污染城市邯郸市北部地区冬季大气颗粒物的化学组分及来源,于2020年11月23日至12月12日采集了 PM1 和PM2.5样品并进行了分析.观测期间日平均ρ(PM1)和ρ(PM2.5)分别为114.53 μg·m-3和124.25μg·m-3,PM1/PM2.5比值的变化范围为83.3％～95.3％,...     

α-Fe2O3/AC催化剂的制备及光Fenton反应降解双酚A

采用温和的无模板溶液反应合成了α-Fe₂O₃/AC复合催化剂,作为光Fenton降解双酚A反应的催化剂。通过XRD、SEM、FTIR、DRS、BET、XPS等方法对催化剂的形貌和理化特性进行了分析。结果表明：该催化剂晶型良好,为介孔材料,能够有效吸收和利用紫外光和可见光;该催化剂具有较高的催化活性,稳定性良好;在初始双酚A质量浓度为30 mg/L、溶液pH为4、H₂O₂加入量为320 mg/L、反应温度为40 ℃、催化剂加入量为1.33 g/L的条件下,双酚A降解率可达91.4%。     

转盘式光催化燃料电池处理染料废水

采用阳极氧化法制备转盘式TiO_2阳极,设计并开发了转盘式光催化燃料电池(PFC),探讨了圆盘转速对PFC中染料降解效果的影响。实验结果表明:随着圆盘转速的提高,污染物和光电界面反应产物的传质作用得以强化,罗丹明B降解率提高;在圆盘转速为1 600 r/min、反应时间为60 min的条件下,罗丹明B降解率达90.8%,是圆盘转速为0 r/min时的8.5倍;光电流也随着圆盘转速的提高而提高,但提高幅度远小于罗丹明B降解率的提高幅度;同时,加强传质作用后再外加电压对PFC催化降解性能的提高作用有限。     

Thermal hazard analysis of 1-((cyano-1-methylethyl) azo) formamide and effect of incompatible substances on its thermal decomposition

1-((cyano-1-methylethyl) azo) formamide (CABN) is an azo compound that exhibits high thermal sensitivity and self-reactivity. Because of incorrect operation, incompatible substances and other dangerous conditions, thermal explosion accidents may occur during the manufacturing, storage, and transportation of CABN. The pyrolysis characteristics of CABN and its mixture for various heating rates were assessed using differential scanning calorimetry. The results showed that incompatible substances increased the risk of CABN. Moreover, the thermal runaway of CABN under an adiabatic condition was studied using an adiabatic rate calorimeter to obtain the parameters under adiabatic condition. Based on the experimental data, the kinetic parameters of CABN and its mixtures were obtained. In addition, a thermal decomposition kinetic model of CABN was created using Thermal Safety Series. All experiments have shown that the conditions and parameters of CABN must be strictly controlled.