Al-Malack M H
KFUPM, Research Institute, Box 1150, Dhahran, Saudi Arabia.
J Hazard Mater. 2001 Apr 20;82(3):263-74. doi: 10.1016/s0304-3894(00)00366-6.
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 1m were used to investigate the effect of water quality parameters using the circulatory method. To investigate the effect of UV-radiation, specimens of 33cm 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 0.8mg/l (ppm) was detected after 14 days of exposure to the UV-radiation.
使用本地制造的管道，研究了水质参数（如水的pH值、温度和总溶解固体（TDS））以及直接暴露于紫外线辐射对未增塑聚氯乙烯（uPVC）管道中铅、锡以及其他金属稳定剂（如钙、镉和钡）迁移的影响。使用1米长的样本，采用循环法研究水质参数的影响。为了研究紫外线辐射的影响，在整个研究过程中使用了33厘米长的样本。采用静态法在不同的紫外线辐射暴露时间进行研究。使用电感耦合氩等离子体（ICAP）技术评估水中铅、锡和其他金属稳定剂的浓度。关于水质参数影响的结果表明，水的pH值、温度、TDS和水循环时间均对铅、锡和其他金属稳定剂的迁移有影响。另一方面，暴露于紫外线辐射被发现会促进铅、锡和其他金属稳定剂的迁移。在暴露于紫外线辐射14天后，检测到铅浓度约为0.8毫克/升（ppm）。
