Correlations of water quality, sediments and benthic invertebrates in Ell-Ren River, Taiwan

1994 ◽  
Vol 30 (10) ◽  
pp. 207-212 ◽  
Author(s):  
Yu Kuang-Chung ◽  
Ho Shien-Tsong ◽  
Chang Jiunn-Kae ◽  
Lai Sheue-Duan ◽  
Wang Chao-Hsiung
Keyword(s):  
Water Quality ◽  
Heavy Metal ◽  
Statistical Analysis ◽  
Multiple Regression ◽  
Benthic Invertebrates ◽  
Aquatic Insect ◽  
Stepwise Multiple Regression ◽  
Considerable Portion ◽  
Metal Contents ◽  
One Year

The correlations of benthic invertebrates, sediments and water quality were investigated at two stations in the Ell-Ren river of Taiwan by means of statistical analysis every two months during a one year period. A total of 8 aquatic insect species and 2 annelid species were collected. Based upon the statistical analyses, several significant correlations for the population of benthic invertebrates and heavy metal contents of sediment were found between Simulium sp. and “adsorptive and exchangeable” lead, Simulium sp. “bound to carbonates” copper as well as Baetis sp. and “bound to carbonates” chromium. Results of stepwise multiple regression indicated that the heavy metal contents of sediment could explain a considerable portion of the variance in the population of benthic invertebrates. “Adsorptive and exchangeable” lead accounted for 86.2% of the variance of the population of Simulium sp. while “Bound to carbonates” chromium retained 81.5% of the variance of the population of Baetis sp.

scholarly journals The Relationship Between Grazing, Erosion and Adult Aquatic Insects in Streams in Mongolia

2010 ◽  
Vol 8 (1) ◽  
pp. 27-39
Author(s):  
Barbara Hayford ◽  
◽  
Jon Gelhaus ◽  
Keyword(s):  
Water Quality ◽  
Regression Analysis ◽  
Water Temperature ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Aquatic Insect ◽  
Stream Channel ◽  
Temperature Conductivity ◽  
Level Data ◽  
Family Level

Overgrazing along stream channels in Mongolia may impact streams by increasing stream channel erosion and in-stream sediments, water temperature, pH, and conductivity. Grazing and erosion impacts may impair stream insects. The Mongolian Aquatic Insect Survey sampled 250 streams during summer seasons in 2003-2006 and 2008. On-site identifi cations of aquatic insect families mostly based on collections of adults were recorded for each site, leading us to ask whether the family-level data were useful in biological assessment related to impacts and impairment from grazing and erosion. A double dendrogram based on hierarchical cluster analysis was used to fi nd patterns in sites and aquatic insect communities. Sites did not group by sampling period, but some sites did group by stream size and elevation. However, elevation was not a signifi cant predictor of variation in aquatic insect metrics. Analysis of variance was used to determine whether insect metrics and water quality variables varied signifi cantly between categories of erosion in the stream channel. Plecoptera and Diptera richness decreased with increased erosion and Percent Diptera Richness was the only aquatic insect metric to vary signifi cantly between categories of erosion along the stream channel. Water temperature, conductivity, and pH also signifi cantly increased with increased erosion. Multiple regression analysis was used to determine whether aquatic insect metrics could be predicted by variation in landscape, water quality and stream reach variables. Trichoptera, Ephemeroptera, and Coleoptera richness increased with increased erosion, conductivity, and pH, but not signifi cantly. Percent Diptera Richness formed the only signifi cant model in the multiple regression analysis, with conductivity the only signifi cant predictor of variation in Percent Diptera Richness. Family-level data generated in the fi eld indicated that sampling for Trichoptera and Ephemeroptera diversity would be maximized by sampling streams undergoing intermediate levels of disturbance from grazing and erosion, that sampling for the Diptera and Plecoptera diversity would be maximized by sampling streams with less erosion and grazing, and that Diptera richness was impaired by erosion related to grazing in Mongolian streams.

Heavy metal contents and the water quality of Karasu Creek in Nigde, Turkey

2007 ◽  
Vol 137 (1-3) ◽  
pp. 169-178 ◽  
Author(s):  
M. Gurhan Yalcin ◽  
Olcay Aydin ◽  
Hatim Elhatip
Keyword(s):  
Water Quality ◽  
Heavy Metal ◽  
Metal Contents

scholarly journals Assessment of Water Quality Index and Heavy Metal Contents of Underground Water Sources in Doma Local Government Area, Nasarawa State, Nigeria

2020 ◽  
pp. 27-40
Author(s):  
Obaje Daniel Opaluwa ◽  
Yahaya Mohammed ◽  
Suwabat Mamman ◽  
Ademu Tanko Ogah ◽  
Danjuma Ali
Keyword(s):  
Water Quality ◽  
Heavy Metal ◽  
Water Quality Index ◽  
Quality Index ◽  
Water Sources ◽  
Total Hardness ◽  
Well Water ◽  
Mean Values ◽  
Metal Contents ◽  
Dug Well

Water quality index and heavy metal contents of underground water sources in Doma Local Government Area, Nasarawa State, Nigeria was assessed to ascertain the suitability of the water for domestic purpose. Physicochemical parameters; temperature, turbidity, TDS, TSS, pH, EC, total hardness, alkalinity, chloride, nitrate and sulphates in the water samples were determined using standard methods of analysis. The water quality index (WQI) was also evaluated using known standard method. The heavy metal contents were determined using atomic absorption spectrophotometric method. The results of the physicochemical analyses shows that in borehole and hand dug well water, the respective mean values were temperature (27.11±0.45 and 27.41±0.55 °C), turbidity (1.51±0.54 and 2.56±1.04 NTU), TDS (230.00±87.75 and 358.67±91.46 mg/dm3), TSS (3.64±1.25 and 4.17±4.17 mg/dm3), pH (5.63±0.69 and 6.60±0.95), EC 277.16 and 296.29±26.52 µS/cm), total hardness (90.00±15.55 and 125.13±16.33 mg/dm3), alkalinity (8.87±.083 and 9.24±1.08 mg/dm3), chloride (20.59±14.62 and 21.22±10.13 mg/dm3, nitrate (0.024±0.04 and 0.01±0.01 mg/dm3) and sulphates (1.05±0.74 and 2.09±0.45 mg/dm3). It was revealed that all the physicochemical parameters for both borehole and hand dug well water had values that were within the standard permissible values recommended by regulatory bodies, NSDWQ and WHO except for the pH of the borehole water which was not within the recommended range and which showed the water to be slightly acidic and which could attributable to the nature of the host rocks. WQI for borehole and hand dug well water were 29.65 and 27.38 respectively with the implication that both water sources presented good water quality for drinking based on the water quality index and water quality status. The results of the heavy metal analyses shows that in borehole and hand dug well water, the respective mean values were Cd (0.003±0.002 and 0.010±0.002 mg/dm3), Cr (0.187±0.075 and 0.19±0.070 mg/dm3), Cu (0.040±0.010 and 0.804±0.805 mg/dm3), Fe (0.500±0.330 and 0.916±0.543 mg/dm3), Pb (0.010±0.010 and 0.015±0.007 mg/dm3) and Zn (0.290±0.120 and 0.072±0.072 mg/dm3). The results shows that Cd, Cu, Pb and Zn for both borehole and hand dug well water had mean values that were within the standard permissible values recommended by NSDWQ and WHO while Cr and Fe had mean values that were higher and which can be attributed to anthropogenic activities close to the water sources. It is recommended the groundwater in these selected communities be monitored regularly and that there is the need for the water to be treated before use because of those parameters that are off the standards to avoid associated health risks.

scholarly journals The spatial distribution pattern of heavy metal concentrations in urban soils — a study of anthropogenic effects in Berehove, Ukraine

2014 ◽  
Vol 6 (3) ◽  
Author(s):  
Tímea Vince ◽  
György Szabó ◽  
Zoltán Csoma ◽  
Gábor Sándor ◽  
Szilárd Szabó
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Land Use ◽  
Spatial Distribution ◽  
Statistical Analysis ◽  
Urban Soils ◽  
Heavy Traffic ◽  
Anthropogenic Activity ◽  
Limit Values ◽  
Metal Contents

AbstractIn the present study we examined the Ba, Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn contamination levels of the soils of Berehove, a small city in West-Ukraine. As a first step we determined the spatial distribution of the heavy metal contents of the urban soils; then, by studying the land use structure of the city and by statistical analysis we identified the major sources of contamination; we established a matrix of correlations between the heavy metal contents of the soils and the different types of land use; and finally, we drew a conclusion regarding the possible origin(s) of these heavy metals. By means of multivariate statistical analysis we established that of the investigated metals, Ba, Cd, Cu, Pb and Zn accumulated in the city’s soils primarily as a result of anthropogenic activity. In the most polluted urban areas (i.e. in the industrial zones and along the roads and highways with heavy traffic), in the case of several metals (Ba, Cd, Cu, Pb, Zn) we measured concentration levels even two or three times higher than the threshold limit values. Furthermore, Cr, Fe and Ni are primarily of lithogenic origin; therefore, the soil concentrations of these heavy metals depend mainly on the chemical composition of the soil-forming rocks.

scholarly journals Calculation of Quality Indices and Correlation Factors at Some Effluents Entry Points of the Mansagar Lake, Jaipur

2021 ◽  
Author(s):  
Yuvraj Singh ◽  
Manish Kumar Jain
Keyword(s):  
Water Quality ◽  
Heavy Metal ◽  
Environmental Conditions ◽  
Monsoon Season ◽  
Quality Indices ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Metal Contents ◽  
Entry Points

With this article, impact of effluent mixed water with the quality of the Mansagar Lake has been established by evaluating the physico-chemical parameters and the heavy-metal contents experimentally. The process of calculating water quality and the metal pollution quality indices is also explained in brief with respect to selected sample locations and varied environmental conditions (Pre- and Post-Monsoon season). Distribution trends of Pearson‘s correlation factor have also been discussed to establish their relation among the physico-chemical parameters and the heavy-metal contents for varied environmental conditions. In the end, detailed discussion on observations made during this study and useful recommendations are also elaborated in details. With this article, we intend to present a document for better understanding of the water quality of this lake in view of futuristic management strategies to be adopted to maintain it heritage values.

The River Rhine as a source of micropollutants in the canal sediments of the city of Delft (The Netherlands)

2003 ◽  
Vol 48 (10) ◽  
pp. 143-150 ◽  
Author(s):  
P. Kelderman ◽  
Y. Xuedong ◽  
Q. Wenchuan ◽  
W.M.E. Drossaert
Keyword(s):  
Heavy Metal ◽  
Statistical Analysis ◽  
Inner City ◽  
River Rhine ◽  
Organic Micropollutants ◽  
Pollution Levels ◽  
Local Pollution ◽  
Metal Contents ◽  
The City ◽  
Rhine Water

This paper presents a statistical analysis of the pollution levels for heavy metals and organic micropollutants at 182 sediment stations in the city canals of Delft. High pollution levels were especially observed in the inner city canal sediments, probably related to the import of polluted river Rhine water. In contrast, the more-or-less isolated outer city sites were generally much less polluted. Regression analysis on the database generally showed highly significant correlations between individual heavy metal contents. The heavy metal contents were usually significantly correlated with polycyclic aromatic hydrocarbons (PAHs) as well. This points to one or more common sources for these micropollutants. Factor analysis and the K-means cluster analysis technique were applied on the above database; it showed a large cluster of stations, nearly all located in the outer city of Delft, characterized by relatively low heavy metal and organic micropollutants’ contents. Another cluster of 18 stations, mostly located in the inner city of Delft, possessed intermediate pollution levels, directly related with the supply of river Rhine water. Finally, the stations of a third cluster, situated in the inner city as well, were highly polluted, especially by local pollution sources. The above hypotheses were further supported by a more detailed statistical analysis for a number of inner city stations, together with 10-year river Rhine pollution data.

scholarly journals Distribution and Identification of Sources of Heavy Metals in the Voghji River Basin Impacted by Mining Activities (Armenia)

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
A. V. Gabrielyan ◽  
G. A. Shahnazaryan ◽  
S. H. Minasyan
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Heavy Metal ◽  
River Basin ◽  
Mining Activity ◽  
Pollution Sources ◽  
Pollution Level ◽  
Chemical Status ◽  
Metal Contents ◽  
Mining Regions

The objective of this research is to assess the distribution of heavy metals in the waters and sediments of the Voghji River and its tributaries impacted by mining activity and to reveal the real source of each of the heavy metals in the environment for assessing the pollution level of heavy metals. Voghji River with two main tributaries (Geghi and Norashenik) drain two mining regions. To identify distribution and pollution sources of heavy metals, the water and sediment samples were collected from eight sampling sites. The results of statistical analysis based on data sets of the period 2014–2016 showed that, after the influence of drainage water and wastewater of mining regions, heavy metal contents in the Voghji River basin dramatically increased. The waters of the Voghji River were highly polluted by Mn, Co, Cu, Zn, Mo, Cd, and Pb. The relation of metals content was highly changed due to anthropogenic impact disturbing the geochemical balance of the Voghji River. The water quality based on only heavy metal contents in the source of the Voghji River belongs to “good” chemical status, and in the sources of Geghi and Norashenik Rivers it is “moderate.” The water quality of Voghji and Norashenik Rivers is sharply worsening after the influence of mining activity, becoming “bad” chemical status. The research revealed the pollution sources of each metal.

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