关键词：化工；升级路线

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今年上半年磷肥产量与去年同期比较基本持平，库存大幅增加，原料成本、出厂价格、出口价格和出口量以及行业效益均大幅下滑。全行业整体亏损严重，市场持续低迷，产能过剩未有改善，预计秋季市场供应充足，竞争激烈，企业生产经营更加艰难，行业处境堪忧。

关键词：磷肥行业；经济运行；趋势分析

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关键词：炼焦；煤资源；煤化工

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我国乙烯工业发展迅猛，已成为仅次于美国的世界第二大乙烯生产国。2012年我国乙烯产能1648.9万吨/年、产量1486.8万吨，表观消费量1629万吨。随着我国乙烯工业规模化装置建设增速加快、装置规模不断增大、消费自给率逐步提高，预计2015年我国乙烯产能将达到约2600万吨/年，当量消费自给率将由2012年的47.5%提高到近70%。但来自外部的竞争压力也日趋加大，乙烯原料进一步向轻质化、多样化发展是大势所趋。未来，我国乙烯工业应更加注重科学发展，更加突出发展方式的转变，更加抓紧结构调整，以促进我国由乙烯生产大国向乙烯生产强国的历史性转变。

关键词：乙烯工业；发展现状；趋势

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The Arroyo Colorado is an ancient channel of the Rio Grande River that extends eastward for about 90 miles from near the city of Mission, Texas through southern Hidalgo County to the city of Harlingen in Cameron County, eventually discharging into the Laguna Madre near the Cameron- Willacy County line. The tidal segment of the Arroyo Colorado, as classified by the Texas Commission on Environmental Quality (TCEQ), is between the confluence with Laguna Madre in Cameron/Willacy County to a point 100 meters (110 yards) downstream of Cemetery Road, south of Port Harlingen in Cameron County. This part of the river is also defined as a coastal natural resource area (CNRA) and a coastal wetland in the Coastal Coordination Act. Water quality monitoring over the past decade has confirmed low oxygen levels and escalated ammonia and nitrate concentrations that have contributed to multiple fish kills in the tidal segment. These sub-optimal aquatic conditions resulted in this portion of the Arroyo Colorado being placed on the Texas Water Quality Inventory and 303(d) List for high aquatic life use impairment in 2002. Numerous urban sources, such as point source wastewater discharges, have contributed to this impairment; however, according to the Arroyo Colorado Watershed Protection Plan (ACWPP), nonpoint source agricultural runoff accounts for much of the water quality issues in the tidal segment.

关键词：农药；水污染监测；水质

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The purpose of this report is to provide documentation of the completed corrective action and to provide data confirming the corrective action. The corrective action was performed in accordance with the approved Corrective Action Plan (CAP) (U.S. Department of Energy (DOE), 1999) and consisted of clean closure by excavation and disposal. The Area 15 Quonset Hut 15-11 was formerly used for storage of farm supplies including pesticides, herbicides, and fertilizers. The Area 23 Quonset Hut 800 was formerly used to clean pesticide and herbicide equipment. Steam-cleaning rinsate and sink drainage occasionally overflowed a sump into adjoining drainage ditches. One ditch flows south and is referred to as the quonset hut ditch. The other ditch flows southeast and is referred to as the inner drainage ditch. The Area 23 Skid Huts were formerly used for storing and mixing pesticide and herbicide solutions. Excess solutions were released directly to the ground near the skid huts. The skid huts were moved to a nearby location prior to the site characterization performed in 1998 and reported in the Corrective Action Decision Document (CADD) (DOE, 1998). The vicinity and site plans of the Area 23 sites are shown in Figures 2 and 3, respectively.

关键词：农药；排水；化肥；除草剂；废物处置

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This document contains up-to-date chemical information, including a summary of the Agency's regulatory position and rationale, on a specific pesticide or group of pesticides. A Fact Sheet is issued after registration of a significantly changed use pattern.

关键词：农药；杀虫剂

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Pesticide contamination of groundwater is a major concern in agricultural areas. Of the many remediation technologies developed in the last decade, zero-valent iron is among the most studied. Nanoscale zero-valent iron (nZVI), with its unique properties and high surface area, enhances many of the advantages of traditional iron remediation. Unfortunately, studies comprehensively examining the utility of iron nanoparticles for pesticide remediation are lacking. The intent of this work is to survey the effectiveness of iron nanoparticles for several common chlorinated pesticides and to comprehensively study the reaction kinetics.Specifically, this study examined the effectiveness of iron nanoparticles for the treatment of the herbicides alachlor, atrazine, dicamba and picloram. Iron nanoparticles were synthesized by the borohydride reduction method and characterized using transmission electron microscopy, X-ray diffraction and Brunauer-Emmett-Teller (BET) specific surface area analysis. The resulting particles had an average diameter of 35 nm and a N2-BET specific surface area of 25 m(2) g(-1). Of the compounds studied, only alachlor degraded in the presence of nZVI. The surface area normalized pseudo first-order rate constant (kSA) for alachlor dechlorination by nZVI was found to be 38.5 x 10(-5) L h(-1) m(-2) (R(2) = 0.999). The primary reaction by-product was identified as dechlorinated alachlor. The effect of ionic strength was also examined. The results suggested that nZVI might be a viable option for both site remediation and low volume, high concentration pesticide waste treatment.

关键词：农药；地下水；污染；水减轻污染；废物处理；反应动力学；建模

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2013年1-10月，我国石油和化工行业总体呈现平稳发展态势。从主要运行指标来看，投资方面，石化行业投资额平稳增长，石油加工业和油气开采业投资形势继续向好；生产方面，三大子行业增加值增速均有所上升，原油产量、加工量以及成品油产量均有好转趋势，化工行业产量增速走势分化；需求方面，石油行业需求稳中有升，化工行业需求企稳；价格方面，原油价格环比下跌，化工产品价格有涨有跌；进出口方面，原油进口量大幅减少，成品油出口增速大幅提高，进口增速有所下滑。

关键词：石油；化工；运行指标；原油；成品油；需求；价格

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The landscape, hydrology, and ecology of Lake Wales Ridge, central Florida, are unique in many respects. The Ridge is the highest and most prominent topographic feature in peninsular Florida and contains one of the largest collections of rare and endangered species in the United States (Dobson and others, 1997), one of the highest concentrations of endemic species in North America (Martin, 1998), and more than 200 lakes, most of which are seepage lakes with significant ground-water inflow. Lake Wales Ridge (subsequently referred to as the Ridge) is also one of the most intensely cultivated citrus regions in the world, with citrus groves covering about 25 percent (170 square miles) of the land area. Geologically, the Ridge is underlain by highly permeable marine sands forming relict Miocene-Holocene paleoislands which support some of the oldest ecologic communities in Florida. Ground water and surface water are closely linked in this region where ground-water inflow contributes more than 80 percent of the net water input to some lakes (Sacks and others, 1998). Ground water is the primary drinking-water supply in this region. The unconfined surficial aquifer supplies drinking water for some rural wells, and recharges water to the underlying Upper Floridan aquifer which is the primary municipal water supply.

关键词：农药；硝酸盐；水质污染；湖泊；地下水

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