Pollution characteristics of atmospheric fine particles and secondary components in Shenzhen during winter and summer

Abstract In the summer and winter of 2004, intensified observations of fine particles of atmospheric particulate matter were conducted in the Shenzhen Security Center, and 30 sets of samples were obtained. Through the analysis of the sample mass concentration, chemical composition, and the climatic conditions during the sampling period, the current atmospheric particulate matter pollution characteristics, seasonal changes (summer and winter) and secondary pollution characteristics of Shenzhen were studied.

Chain Link Fence

Chain Link Fence is made from galvanized or PVC coated iron wire, to fix with posts, brace and fittings to build a chain link fence system in the park, tennis court, airport and Other places.The fence is made of woven steel wire, which is one of the most commonly used and versatile of all the fencing fabrics. It is normally available in a variety of wire gauges and mesh sizes to suit individual applications. All chain link rolls come complete with line wires and with knuckled edges. Widely used in highway, railway, highway and other fence facilities. Also used for interior decoration, raising chickens, ducks, geese, rabbits and zoo fence. Fence of mechanical equipment, mechanical equipment of the transmission network. Sports venues fence, the road greening fence.

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