Investigation of Lead Pollution of Taps in Market / 环境与健康杂志

ABSTRACT

Objective To investigate lead pollution of tap in market. Methods 16 taps (2 PPR taps and 14 metal taps)were collected and were sunk in distilled water for 4 hours,8 hours and 12 hours. Lead levels in the distilled waters were determined by atomic absorption spectrometry. Results No lead was detected for PPR taps. Of 14 metal taps,only one tap was not observed lead pollution. The top lead level was 56.54 ?g/L,the median was 5.79 ?g/L. These brass taps resulted in higher lead pollution than those taps with ceramic preformed core (P0.05). 72.2% of the samples with brass preformed core exceeded 10 ?g/L and only 9.5% for those taps with ceramic preformed core. These taps with registered trade mark had a slighter lead contamination than those without registered trade mark(P