湿法吸收法处理氮氧化物废气

介绍了湿法吸收氮氧化物工业废气的方法，并对吸收液和吸收塔进行了深入的探讨和研究。     

废水和土壤样品中微量T1的原子吸收测定

本文研究了T1与Br或I的离子缔合物在不同的HC1或H_2SO_4介质中,用MIBK、环己酮、乙酸戊酯、乙酸丁酯和乙酸乙酯等有机溶剂的萃取效率,以及受酸度影响的情况,从而选择出最佳酸度、萃取剂和测定条件。本方法用于土壤及废水(天然水)中微量T1的测定,收到了良好的效果。     

Trace metal concentration in scalp hair of occupationally exposed autodrivers

The concentrations of Cr, Pb, Zn, Cu, Ni and Cd wereanalyzed by Atomic Absorption Spectrophotometer in thescalp hair of professional male autodrivers who areoccupationally exposed to the vehicular/industrialpollutants in the industrial city of Coimbatore, TamilNadu. The unwashed hair samples when compared with thewashed hair showed a significantly higher levels of Cr,Zn and Pb. The correlation coefficient showed a strongmutual dependence on the scalp hair of the exposedindividuals and no correlation was found among the tracemetals except for Ni–Pb and Ni–Cd. The results ingeneral showed a positive exogenous contribution of allthe analyzed industrial trace metals. The drivers who are occupationally exposed to vehicular/industrial pollution are at risk.     

喷丸亚光机的危害性分析与无害化设计

从安全设备工程学的观点出发 ,分析了喷丸亚光机这一特种机械的危险因素和有害因素 ,阐述了在防尘、降噪、安全、耐用等方面所采取的相应防护措施和关键技术。提出了使该设备达到安全化、无害化的设计方法 ,使机械设计制造与工业安全卫生科学紧密结合 ,不仅具有生产功能的实用性 ,而其加工性能和相关指标达到或优于国外同类设备。     

固定化活性氧化镧的化学除磷及其真空再生技术研究

为降低污水除磷成本、再生循环利用高效除磷剂、回收水体中磷,在此提出并研究了一种新型的化学除磷技术——固定化活性氧化镧（La2O3）化学除磷及其真空再生技术。该技术利用电解实现镧的固定,运用真空原理,实现氧化镧的再生和磷的回收。通过归纳各种常规除磷和新型除磷方法的特点,以及新型除磷方法的技术可行性,得出固定化活性La2O3化学除磷法较常规的除磷方法运行成本低,无污泥及二次污染产生,除磷效率高,可循环利用氧化镧除磷剂．回收利用水中的磷．     

微波消解石墨炉原子吸收法测定土壤中的铅和镉

用微波消解石墨炉原子吸收分光光度法(GFAAS)测定土壤中的铅、镉含量,通过硝酸-氢氟酸-盐酸体系进行土壤样品微波消解,加入磷酸二氢铵基体改进剂消除干扰,该方法具有分析速度快、测定结果的精确度和精密度高、节省人力等特点。     

Co- and tri-generation system based on absorption refrigeration cysle: a review

ABSTRACT

Absorption refrigeration system is a heat-driven refrigeration system, which has a good application prospect in co- and tri-generation system, and is of great significance to energy conservation and emission reduction. In this paper, the combined power and cold system the combined power and cooling system and the combined cold cooling, heat, and power system based on absorption refrigeration are reviewed. Working fluid of absorption refrigeration cycle, different configurations, system performance, main application fields, and economic considerations of co- and tri-generation systems were focused in this review. This paper will be useful for the researchers to have a more comprehensive understanding of the application and development prospect of co- and tri-generation systems based on Absorption Refrigeration Cycle.     

差分吸收光谱法多组分浓度反演试验研究

应用新的差分吸收光谱烟气浓度反演算法对SO2、NO、NO2混合气体浓度反演进行了试验研究。与常规反演算法相比,该算法充分考虑了被测对象在不同波段上的差分吸收结构差异,避免了多组分同时反演时使用同一频率进行数字滤波引入的误差。结果表明,该算法能对多组分气体浓度进行快速、准确的反演,误差小于5%。     

Absorption cross-sections of atmospheric constituents: NO2, O2, and H2O

Absorption spectroscopy, which is widely used for concentration measurements of tropospheric and stratospheric compounds, requires precise values of the absorption cross-sections of the measured species. NO₂, O₂ and its collision-induced absorption spectrum, and H₂O absorption cross-sections have been measured at temperature and pressure conditions prevailing in the Earth’s atmosphere. Corrections to the generally accepted analysis procedures used to resolve the convolution problem are also proposed.     

Urban Air Pollution Monitoring with DOAS Considering the Local Meteorological Situation

The concentrations of ozone, NO₂ and SO₂, measured with a DOAS system 70 m above ground level in the city of Graz were compared with data from conventional ground stations. The dependence of vertical trace-gas distributions on stability categories and time of the day or year was investigated. Concerning the maximum ozone concentrations in summer, the DOAS data are representative for the ground-level situation. In average, the concentrations 70 m above ground are more than twice the ground-level concentrations. It has been shown that beside the reaction with NO, dry deposition is an important sink for ozone near the surface. The DOAS NO₂-concentrations are representative for ground-level conditions in summer, except for the morning maximum of NO₂. In winter the DOAS NO₂-concentrations amount for 73% of the ground level values in average. Concerning the slow reacting trace gas SO₂, the DOAS data are always representative for the ground-level conditions.