采用常规与加速试验法批量检测市售自来水用末端管道(塑管)的多种溶出成分,从安全性角度系统分析钢塑管在不同浸泡液和浸泡条件下无机物和有机物的溶出情况。检测结果显示:部分管材样品溶出的铅、钡等重金属含量超标,TOC和甲醛加速试验结果普遍超标。改进的的加速试验法快速、简便、可靠,可间接反映管材的内在安全品质。
stressed t hat promoti ng the compre hensive revitalizati on should focus on e conomi c constr uction as t he ce ntral focus with, pay special attenti on t o grasp the implementati on of five devel opme nt concepts, dee pening reform and promoti ng the all -round openi ng up, ensuri ng and im proving people' s livelihood, strengt hen the constr uction of ecologi cal civilization, "five prioritie s