石化行业炼油恶臭污染源治理技术评估

运用环保技术评估体系,提出石油炼制过程中典型恶臭污染源治理技术评价指标体系,并对已应用的治理技术进行全面评估,从而筛选出炼油污水处理场废气、酸性水罐罐顶气、冷焦水罐/油品中间罐/污油罐罐顶气、氧化脱硫醇尾气和油品装卸挥发气的最佳可行技术.     

空气中BTEX检测方法研究进展

BTEX（苯系物）作为空气中的一种痕量组分,主要包括苯、甲苯、乙苯、间-二甲苯、对-二甲苯、邻二甲苯,这些物质可影响人体健康和环境空气质量.分析和探讨了环境空气中BTEX常用的采样、前处理和检测方法,并列举了各方法的国内外应用实例.BTEX采样方法主要包括以下2种:①吸附管采样法,其采样器体积小、便于携带,但易造成穿透现象,样品易损失.②空气采样法,其操作简单、重复使用率高,但清洗复杂、价格较高.BTEX前处理方法主要包括以下3种:①固相微萃取法,其可减少样品与空气接触的机会,自动化程度较高,但难以实现样品的多次分析.②溶剂解析法,因其对环境影响较大,所以应用较少.③热脱附法,其常采用二级热脱附实现样品富集和浓缩,操作过程简单,设备体积相对较大,其升温和降温系统是影响前处理速度和效果的关键.BTEX检测方法主要包括:①质子转移反应质谱法,其灵敏度高,但因其价格昂贵应用较少.②气相色谱-光离子化检测法,其设备体积小巧常用于外场监测中.③差分吸收光谱法、直接空气进样质谱法、低压化学电离质谱法、大气压化学电离质谱法、固相微萃取-气相色谱法、吸附/热脱附-气相色谱-火焰离子检测法/质谱检测法等.研究显示,空气中BTEX的分析方法应根据实际应用条件来确定,在保证分析仪器灵敏度和精确度的基础上,开发外场检测的便携式自动在线分析仪器,提高仪器便携性、自动化、智能化,更好地满足各项标准和部门管理的需求.      

一种简便快捷的氨监测分析方法

介绍了GDYQ-201M室内空气现场甲醛·氨测定仪法测定空气中氨的方法,并与纳氏试剂分光光度法(GB/T14668-93)比较,结果表明,在0.00～5.00mg/m3范围内,用CDYQ-201M室内空气现场甲醛·氨测定仪法测定氨的精密度与准确度完全可以满足室内空气样品中氨的测定.     

加强大型仪器的使用和管理 更好地为环保科研服务

总结了仪器的选型以及各类分析仪器系统和强大的统计计算功能对科研人员的素质要求,提出了进一步开发大型仪器的使用功能以及管理问题。     

Methods for the transcervical collection of fetal cells during the first trimester of pregnancy

Before termination of pregnancy, four techniques for retrieving fetal cells transcervically were investigated: uterine lavage, endocervical lavage, cytobrush and mucus aspiration. The yield of fetal cells in these samples was studied and found to be somewhat better after uterine lavage. A preliminary assessment of the safety of mucus aspiration was carried out before transcervical chorionic villus sampling (CVS) in continuing pregnancies. No difference in outcome to a control group having only CVS was found.     

试论未来教育与现代教育技术

本文从理论的角度对未来教育、现代教育技术进行了分析研究,阐述了现代教育技术的发展与未来教育及未来教育目标的密切关系。     

二次颗粒物源成分谱的建立在尘源解析中的作用

通过CMB模型计算各类尘源对TSP、PM10的影响时发现，二次颗粒物对尘源解析起到了不容忽视的作用，因此就二次颗粒物源成分谱进行了专门解析研究，并把二次颗粒物解析也纳入到模型中来，从而完善了源解析结果。     

毛发载体生物膜法处理味精离交废水

利用经特定脱脂处理的毛发作载体，经定向培菌挂膜后，对高浓度ＣＯＤ和高硫酸根含量的味精度交废水进行小试和中试研究，表明，在一定供气量和温度条件下，废水ＣＯＤ总去除率可稳定在９６％以上，在供氧不足的兼性条件下或温度较低时，仍有较高去除效果，其对ＳＯ４＾２－的总去除率可达９８％以上，２ｍ＾３／ｈ的中试经历了三个月实际运行，运行结果表明该工艺已具有生产建立生产性装置的技术条件。     

Feral Goat Eradications on Islands

Abstract:  Introduced mammals are major drivers of extinction. Feral goats ( Capra hircus ) are particularly devastating to island ecosystems, causing direct and indirect impacts through overgrazing, which often results in ecosystem degradation and biodiversity loss. Removing goat populations from islands is a powerful conservation tool to prevent extinctions and restore ecosystems. Goats have been eradicated successfully from 120 islands worldwide. With newly developed technology and techniques, island size is perhaps no longer a limiting factor in the successful removal of introduced goat populations. Furthermore, the use of global positioning systems, geographic information systems, aerial hunting by helicopter, specialized hunting dogs, and Judas goats has dramatically increased efficiency and significantly reduced the duration of eradication campaigns. Intensive monitoring programs are also critical for successful eradications. Because of the presence of humans with domestic goat populations on large islands, future island conservation actions will require eradication programs that involve local island inhabitants in a collaborative approach with biologists, sociologists, and educators. Given the clear biodiversity benefits, introduced goat populations should be routinely removed from islands.