Impacts of a flash flood on drinking water quality: case study of areas most affected by the 2012 Beijing flood
Autor: | Yun Shi, Wei Lu, Hongjuan Qi, Daizhi An, Ping Zhang, Can Zhang, Wang Lili, Qiang Wang, Rubao Sun |
---|---|
Jazyk: | angličtina |
Rok vydání: | 2016 |
Předmět: |
Pollution
media_common.quotation_subject Risk assessment processes 010501 environmental sciences 01 natural sciences Article 03 medical and health sciences 0302 clinical medicine Beijing Flash flood Applied sciences 030212 general & internal medicine Turbidity lcsh:Social sciences (General) Water pollution lcsh:Science (General) 0105 earth and related environmental sciences media_common Hydrology Multidisciplinary Flood myth Environmental engineering Health sciences Total dissolved solids Environmental science lcsh:H1-99 Water quality Mathematics lcsh:Q1-390 |
Zdroj: | Heliyon, Vol 2, Iss 2 (2016) Heliyon |
ISSN: | 2405-8440 |
Popis: | In this study, we present a method for identifying sources of water pollution and their relative contributions in pollution disasters. The method uses a combination of principal component analysis and factor analysis. We carried out a case study in three rural villages close to Beijing after torrential rain on July 21, 2012. Nine water samples were analyzed for eight parameters, namely turbidity, total hardness, total dissolved solids, sulfates, chlorides, nitrates, total bacterial count, and total coliform groups. All of the samples showed different degrees of pollution, and most were unsuitable for drinking water as concentrations of various parameters exceeded recommended thresholds. Principal component analysis and factor analysis showed that two factors, the degree of mineralization and agricultural runoff, and flood entrainment, explained 82.50% of the total variance. The case study demonstrates that this method is useful for evaluating and interpreting large, complex water-quality data sets. |
Databáze: | OpenAIRE |
Externí odkaz: |