文摘

戈西河河Bhagirathi和河的主要离子化学北阿坎德邦喜马拉雅山

作者(年代):n Semwal和j·s . Jangwan

河水的化学性质是由供应各种元素从自然(化学风化和雨水)和人为(污水、矿山废水等)来源。冰川融化的主要离子溪流和硫磺泉,分别位于Bhagirathi谷进行了研究,观察这些来源的贡献在河Bhagirathi离子丰度。离子成分在冰川融化流被发现;Mg > Ca >钠>钾> NH4(阳离子)和Cl > HCO3 > SO4 > 3号(阴离子)。另一方面,硫磺泉的水是由高浓度值和特征完全不同的阳离子成分即钠>镁> K >钙>铵,而阴离子成分为冰川融水都遵循着相同的模式。河流的平均离子成分Bhagirathi向下游被发现;钙>镁> Na > K > NH4(阳离子)和HCO3 > SO4 > Cl > 3号(阴离子)。然而,硫酸盐离子胜过了其他阴离子在上游即甘戈里山谷。一些地方流如Nagun迦得和Syansu迦得,这大数量有助于河附近的下游Bhagirathi Uttarkashi的特点是高水平的HCO3和总溶解固体(TDS)。在两个筑坝领域即Maneri和特赫里,阳离子和阴离子的浓度水平增加而流动的河流。 These results were compared with ionic abundance of comparatively low altitude spring fed Himalayan River Kosi, where the ionic concentration levels were comparatively low at the origin and consistently increased towards downstream. The average ionic composition of River Kosi all through its length was similar as River Bhagirathi in the downstream reaches, which in fact is the composition of rain water over the Himalaya region. It is also observed during the study that biological life in the form of benthic fauna is also influenced by the ionic environment at sediment - water interface.