榆林大骨节病区饮水井的研究 Ⅰ饮水井的地下剖面与底质的物化性质表征

RESEARCH ON THE WELLS IN KBD AREA OF YULIN: ⅠTHE PROFILE IN UNDERGROUND OF WELL AND THE PHYSIOCHEMICAL CHARACTERIZA-TION IN THE MATRIX OF WELL

对榆林KBD病区一名新发病儿童以及邻近非病村一名无病儿童家庭的饮水井进行了剖析,观察了它们的地质剖面和出水层构造,并采集了出水层底质和饮水样品,进行了多种物化表征及测定。发现二者的地质剖面相同,但病儿饮水井的出水层在泥炭层,而非病儿饮水井的出水层在泥炭层下面的沙层。病儿水井水中有机碳含量大于非病儿饮水井;病儿饮水井泥炭层出水层的有机碳含量和碳酸盐含量均大于非病儿饮水井泥炭层和出水层;泥炭层腐殖质类有机物的骨架结构相近,但其中氧硫等杂元素比例较高。对两井底质的分析表征结果表明,出水层在泥炭层与KBD有关。

Two wells in the families of children with Kaschin - Beck Disease (KBD) and without KBD in Yulin were excavated and their profile were observed. The two profils are same geologically. The level of underground water was located in the peat layer in the well of the child with KBD and it was located in the sand layer under peat layer in another well. The water and sediment matrix samples were collected and their characterization and determination were performed in multi - physiochemically. The content of organic carbon in the well water with KBD is higher than that in another well. The content of organic carbon and carbonate in the water layer with KBD are higher than those in the water and peat layers in another well. The frame structure of humic substances in peat layer of both wells is similar but the percentage of elements in O, S is higher. The results from determination and characterization indicate the correlativity between KBD and the water level in peat layer.