Migration of lead from unplasticized polyvinyl chloride pipes

被引:67
作者
Al-Malack, MH [1 ]
机构
[1] King Fahd Univ Petr & Minerals, Res Inst, Dhahran 31261, Saudi Arabia
关键词
barium; cadmium; calcium; diffusion rate; effect of UV-radiation; migration of lead; pH; TDS; temperature; tin; unplasticized PVC pipes;
D O I
10.1016/S0304-3894(00)00366-6
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The effect of water quality parameters, such as water pH, temperature, and total dissolved solids (TDS), and direct exposure to UV-radiation on the migration of lead tin and other metal stabilizers, such as calcium, cadmium, and barium from unplasticized polyvinyl chloride (uPVC) pipes were investigated using locally manufactured pipes. Specimens of 1 m were used to investigate the effect of water quality parameters using the circulatory method. To investigate the effect of UV-radiation, specimens of 33 cm long were used throughout the research. The investigation was carried out, using the static method at different times of exposure to the UV-radiation. The concentrations of lead, tin, and other metal stabilizers in the water were evaluated using the inductively coupled argon plasma (ICAP) technique. The results on the effect of water quality parameters showed that water pH, temperature, TDS, and time of water circulation were all having an effect on the migration of lead, tin, and other metal stabilizers. On the other hand, exposure to UV-radiation was seen to promote the migration of lead, tin, and other metal stabilizers. A lead concentration of about 0.8 mg/l (ppm) was detected after 14 days of exposure to the UV-radiation. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:263 / 274
页数:12
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