陶瓷片密封水嘴铅析出量超标原因分析

Analysis on causes of excessive lead release from the ceramic cartridge faucets

中文关键词:  陶瓷片密封水嘴  铅  析出  橡胶管

英文关键词:ceramic cartridge faucets  lead  release  rubber hose

中文摘要:

      目的 研究某品牌陶瓷片密封水嘴铅析出量超标的主要因素。方法 将水嘴样品按不同材质拆解成部件, 采用X射线荧光光谱(X-ray fluorescence spectrometry, XRF)对部件中铅含量进行快速筛查, 将筛查出的铅含量高的部件消解, 采用电感耦合等离子体发射光谱法(inductively coupled plasma optical emission spectrometery, ICP-OES)测定其中铅含量。通过测定铅含量高部件的铅析出量, 对水嘴铅析出量超标原因进行了深入分析。结果 XRF筛查试验结果表明进水软管铜接头和进水软管橡胶管是铅含量高部件, ICP-OES测试对这一结果进行了确证。进水软管橡胶管铅析出量高于进水软管铜接头。结论 推测认为进水软管橡胶管中的铅是引起该产品铅析出超标的主要原因。

英文摘要:

      Objective To study the main factors of excessive lead precipitation of a certain brand of ceramic cartridge faucets. Methods The nozzle sample was disassembled into parts according to different materials, the lead content in components were quickly screened by X-ray fluorescence spectrometry (XRF). The screened components with high lead content were dissolved, and the lead content was determined by inductively coupled plasma optical emission spectrometery (ICP-OES). The cause of excessive lead precipitation in nozzle was analyzed by measuring the amount of lead precipitation in components with high lead content. Results The XRF screening test results showed that the water inlet copper joint and the water inlet hose rubber tube were high-lead components, and the ICP-OES test confirmed this result. The amount of lead release in the rubber hose of the water inlet hose was higher than that of the copper joint of the water inlet hose. Conclusion It is speculated that the Pb in the inlet hose rubber pipe is the main cause of excessive lead release.