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首页> 外文期刊>International journal of environmental analytical chemistry >Qualitative interpretation of physico-chemical and isotopic parameters in the Krka River (Croatia) assessed by multivariate statistical analysis
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Qualitative interpretation of physico-chemical and isotopic parameters in the Krka River (Croatia) assessed by multivariate statistical analysis

机译：通过多变量统计分析对克尔卡河（克罗地亚）中理化和同位素参数的定性解释

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摘要

Multivariate statistical analyses were applied on the measured physico-chemical (Cd, Pb, Cu, Zn, Mg, Ca, Ob, alkalinity, temperature, pH, SAS, DOC and DIC) and isotopic parameters (δ~(13) C and δ~(18)O) to estimate and distinguish anthropogenic from natural influences to the water system of the Krka River. Analyses were conducted on the data collected during six years from twelve sampling sites. On the basis of orientation, positioning and grouping of parameters arranged by biplots, four main hypotheses were defined and finally statistically confirmed. Thereof, two main and distinct processes occurring in the Krka River could be highlighted: (i) upstream pollution, caused by the inflow of untreated waste-waters of city of Knin and (ii) downstream self-purification, caused by the sedimentation and/or co-precipitation of pollutants coupled by the inflow of clean subterranean water (groundwater recharge). Grouping of (i) hydrological and carbon cycle connected parameters, and (ii) anthropogenically influenced correlated parameters were proposed as a result of statistical analysis. Regarding the pH, it is shown that a stream section influenced by the subterranean inflow of Zrmanja River is statistically significantly different for all sampling campaigns during six years, being lower for about 0.5 pH unit.
机译：对测得的理化指标（Cd，Pb，Cu，Zn，Mg，Ca，Ob，碱度，温度，pH，SAS，DOC和DIC）和同位素参数（δ〜（13）C和δ）进行多变量统计分析〜（18）O）来估计和区分人为因素和自然因素对克尔卡河水系的影响。对六年来从十二个采样点收集的数据进行了分析。根据双向图的方向，定位和参数分组，定义了四个主要假设，并最终进行了统计确认。因此，可以着重指出在克尔卡河中发生的两个主要过程：（i）上游污染，这是由克宁市未经处理的废水流入引起的；（ii）下游的自净是由沉积和/或污染引起的或污染物的共沉淀，再加上干净的地下水的流入（地下水补给）。作为统计分析的结果，提出了（i）水文和碳循环相关参数以及（ii）人为影响的相关参数的分组。关于pH值，表明受Zrmanja河地下流入影响的河段在6年内的所有采样活动中在统计学上都存在显着差异，对于0.5 pH单位而言较低。

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