scholarly journals Chemical analyses of ground and surface water from Battle Brook drainage basin, near Princeton, Minnesota

1994 ◽  
Author(s):  
R.B. Wanty ◽  
M.L. Tuttle ◽  
J.K. Böhlke ◽  
Paul H. Briggs
Keyword(s):  
Surface Water ◽  
Drainage Basin ◽  
Chemical Analyses

scholarly journals Spatial variability of nitrate pollution and its sources in a hilly basin of the Yangtze River based on clustering

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yuhuan Cui ◽  
Jie Wang ◽  
Shuang Hao
Keyword(s):  
Surface Water ◽  
Yangtze River ◽  
Drainage Basin ◽  
Quality Standard ◽  
Nitrate Pollution ◽  
Middle Part ◽  
Lake Basin ◽  
The Yangtze River ◽  
Nitrate Sources ◽  
Groundwater Samples

AbstractNitrate (NO3−) pollution is a serious global problem, and the quantitative analysis of its sources contributions is essential for devising effective water-related environmental-protection policies. The Shengjin Lake basin, located in the middle to lower reaches of the Yangtze River in China was selected as the research area in our study. We first grouped 29 surface water samples and 33 groundwater samples using cluster analysis, and then analyzed potential nitrate sources for each dataset of δ15N–NO3− and δ18O–NO3− isotope values by applying a Bayesian isotope-mixing model. Our results show that the nitrogen pollution in the surface-ground water in the study area seriously exceeded to class V of the Environmental Quality Standard of Surface Water of China. The NO3− in surface water from the mid-upper reaches of the drainage basin mainly originates from soil nitrogen (SN) and chemical fertilizer (CF), with contribution rates of 48% and 32%, respectively, and the NO3− in downstream areas mainly originates from CF and manure and sewage (MS), with contribution rates of 48% and 33%, respectively. For the groundwater samples, NO3− mainly originates from MS, CF, and SN in the mid-upper reaches of the drainage basin and the northside of Dadukou near the Yangtze River, with contribution rates of 34%, 31%, and 29%, respectively, whereas NO3− in the lower reaches and the middle part of Dadukou mainly originates from MS, with a contribution rate of 83%. The nitrogen conversion of surface water in lakes and in the mid-upper reaches is mainly affected by water mixing, while the groundwater and surface water in the lower plains are mainly affected by denitrification. The method proposed in this study can expand the ideas for tracking nitrate pollution in areas with complex terrain, and the relevant conclusions can provide a theoretical basis for surface and groundwater pollution control in the hilly basin of Yangtze River.

scholarly journals Status of Surface Water from Selected Areas of Coastal Guyana and the Removal of Toxic Contaminants, using a Suitable Adsorbent

2021 ◽  
Keyword(s):  
Heavy Metals ◽  
Surface Water ◽  
Physical Parameters ◽  
Peanut Shell ◽  
Chemical Analyses ◽  
Standard Methods ◽  
Lead And Cadmium ◽  
Before And After ◽  
The Status ◽  
Physical And Chemical

This study was done, to compare the status of surface water taken from two different locations within the coastal areas of Guyana, before and after treatment with a peanut biomass adsorbent. The water samples were collected from Parika Bushy Park and Vreed En Hoop and stored in water bottles. It was then submitted for physical and chemical analyses using versatile standard methods. These include test for heavy metals cations (Pb, Fe, Zn, Cd, and Al), test for anions (chlorides, sulphates, phosphates) along with the physical parameters (turbidity and conductivity). There was no detection for the toxic lead and cadmium cations at either surface water. The adsorbent was effective in removing Fe<sup>2+</sup> at both surface water as there was a decrease in concentration. For example, at Vreed En Hoop surface water, the concentration of Fe<sup>2+</sup> decrease from (8.42 ± 2.14 mg/L) to (5.56± 3.42 mg/L), 33.96% reduction, after treatment with the adsorbent. For the Al<sup>3+</sup> cation, there was a decrease in the concentration of Al<sup>3+</sup> from (5.97 ± 0.67mg/L) to (4.20 ± 1.90 mg/L ), 29.65%. For the SO<sub>4</sub><sup>2-</sup> and Cl- anions, there was a decrease in concentration at the Vreed En Hoop surface water, after treatment with the adsorbent. With SO42-, the concentration decrease from 346 ± 3.15 mg/L to 293 ± 1.77 mg/L, 15.31%, whilst that for chloride, Cl-, decrease from 116 ± 1.75 mg/L to 102 ± 1.70 mg/L, 12.07% reduction. Thus, the peanut shell should find application in the removal of selective cations and anions from surface water.

scholarly journals Chemical analyses of 33 surface water samples from the Gunnison area, Colorado

1995 ◽  
Author(s):  
John B. McHugh ◽  
W.R. Miller ◽  
A.L. Meier ◽  
W. M. d'Angelo
Keyword(s):  
Surface Water ◽  
Water Samples ◽  
Chemical Analyses ◽  
Surface Water Samples

Origin and fate of hydrocarbons in Sullom Voe

1981 ◽  
Vol 80 ◽  
pp. 135-154
Author(s):  
J. M. Davies ◽  
R. Johnston ◽  
K. J. Whittle ◽  
P. R. Mackie
Keyword(s):  
Surface Water ◽  
Petroleum Hydrocarbons ◽  
Water Film ◽  
Sediment Traps ◽  
Chemical Analyses

SynopsisThe results of chemical analyses for hydrocarbon components in the surface water film, water, sediment traps and sediments are presented for samples collected during the period 1973–78. The n-alkane profiles of these samples are used to characterise the hydrocarbons and to help in determining their origin. The amounts of hydrocarbon present are compared to the estimated inputs of petroleum hydrocarbons from operational losses and accidents based upon analogies with worldwide averages and with data taken from other similar oil terminals. Some conclusions are drawn as to the likely fate of this oil in Sullom Voe.

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