Textural characteristics of dust fallout and potential effect on public health in Kuwait City and suburbs
Textural characteristics of dust fallout and potential effect on public health in Kuwait City and suburbs
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DOI：
10.1007/s12665-009-0177-3
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发表时间：
2010-03-01
影响因子：
2.8
通讯作者：
Al-Ostad, Abdulaziz Naser
中科院分区：
文献类型：
--
作者：
Al-Hurban, Adeeba Essa;Al-Ostad, Abdulaziz Naser
2006年3月至2007年2月，在科威特市和郊区的12个地点调查了尘埃的质地和矿物学特征及其对人体健康的潜在影响。矿物学上以方解石和石英为主，粒度在1~25微米之间，化学上以钙、铁、镁、铝等元素为主，钙平均百分含量最高，为12.89%。结果表明，这12个地点的人类接触到方解石(15.00-51.80%)、石英(26.40-66.9%)、钠长石(6.30-17.30%)、白云石(1.20-10.20%)和石膏(0.00-6.4%)等矿物的平均百分比浓度不同，其中K3地点的方解石、白云石和石膏的平均浓度最低，石英和钠长石的平均浓度最高。元素钙、铁、镁、铝、钾、锌、钠、铬、镉的含量范围分别为5.845~12.890%、0.946~3.141%、0.752~2.513%、0.545~2.261%、0.059~0.307%、0.004~0.792%、0.003~0.018%、0.003~0.005%和0.0004%。吸入这种浓度的方解石颗粒可能会引起咳嗽、打喷嚏和鼻部刺激，在长期接触过量方解石的情况下，可能会产生碱中毒和高钙血症。石英在长期接触(一年或更长时间)后可能会有潜在的严重呼吸影响，在我们的研究中就是这样。与国际和当地标准相比，科威特长期暴露在粉尘中极有可能对人体产生有害和有害的影响。
The textural and mineralogical characteristics of the dust fallout along with the potential effect on human health were investigated at 12 locations in Kuwait City and suburbs during March 2006-February 2007. Mineralogically, the dust comprises mostly calcite and quartz with grain size ranging from 1 to 25 mu m. Chemically, elements such as Ca, Fe, Mg, and Al are the dominant ones with the highest amount of average percentage concentration 12.89% for Ca. Results showed that humans in the 12 sites are being exposed to different ranges of average percentage concentrations of minerals such as calcite (15.00-51.80%), quartz (26.40-66.9%), albite (6.30-17.30%), dolomite (1.20-10.20%), and gypsum (0.00-6.4%), where site K3 recorded the lowest average concentrations for calcite, dolomite, and gypsum and the highest for quartz, and albite. The elements Ca, Fe, Mg, Al, K, Zn, Na, Cr, and Cd recorded ranges of (5.845-12.890%), (0.946-3.141%), (0.752-2.513%), (0.545-2.261%), (0.059-0.307%), (0.004-0.792%), (0.003-0.018%), (0.001-0.005%) and < 0.0004%, respectively. Inhalation of such concentrations of calcite particles may cause coughing, sneezing, and nasal irritation, and in cases of chronic exposure to excessive oral doses of calcite may produce alkalosis and hypercalcemia. Quartz can have potentially serious respiratory effects following long-term exposure (1 year or more) which is the case here in our study. Comparing with international and local standards, it is highly likely that harmful and hazardous effects on the human body are being experienced by long-term exposure to dust fallout in Kuwait.