Effects of phreatophyte removal on water quality in the Gila River Phreatophyte Project area, Graham County, Arizona

Laney, R.L.; Hjalmarson, H.W.

doi:10.3133/pp655m

Cited by 3 publications

(4 citation statements)

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“…Results reported by Laney (1977) and by McQueen and Miller (1972) showed that water in the unsaturated zone may have relatively high solute concentrations compared with the underlying ground water. In studies of movement of nitrate through the unsaturated zone in southern and central California, Pratt and Adrian0 (1973) and Pratt and others (1972) measured the moisture content of soil cores taken at various depths and determined nitrate by extracting the solutes with water.…”

Section: Water Chemistry and Movement In The Unsaturated Zonementioning

confidence: 93%

“…A vacuum is then applied, and water that collects is later withdrawn by applying compressed gas (Wood, 1976). Samples of soil moisture and water in the unsaturated zone in bottom land adjacent to the Gila River in the upper part of the San Carlos reservoir area, Arizona, were obtained by a somewhat similar procedure (Laney, 1977). Methods of obtaining soil extracts are in common use in soil chemistry work (U.S. Salinity Laboratory Staff, 1954), and such procedures were used in the San Carlos reservoir area by McQueen and Miller (1972).…”

Section: Water Chemistry and Movement In The Unsaturated Zonementioning

confidence: 99%

“…Another study farther downstream on the Gila which was made in the 1960's and 1970"s also obtained detailed information on ground-water composition near the river and summarized it with a large-scale map (Laney, 1977).…”

Section: Map Symbolsmentioning

confidence: 99%

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Ecological and Geochemical Features of Manganese Distribution in Groundwaters of Ukraine

Kоshliakova

2023

Mìneral. ž.

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The results of hydrogeochemical studies on the identification of the features of manganese distribution in drinking groundwater of conditionally clean and technologically polluted territories of Ukraine are presented, as well as the assessment of the influence of inorganic ligands characteristic of the investigated groundwater on the behavior of Mn2+ depending on the initial conditions of the water environment. The Kyiv city, as well as Zhytomyr, Vinnytsia, and Rivne regions were selected as conditionally clean territories; Kyiv and Dnipropetrovsk regions — as technologically polluted territories. According to domestic and foreign literary data, the range of medical, biological, and toxicological properties of manganese is outlined, and the key features of the element prevalence in natural aqueous solutions and underground waters are clarified. Manganese and ferrum concentrations in the samples of the studied groundwater were determined using the high-precision method of mass spectrometry with inductively coupled plasma (ICP-MS). As a result of the statistical processing of the studied samples, it was established that the median manganese content for most of the examined territories does not exceed the maximum permissible concentration. The exception is the underground water of the Pidhirtsi village (Kyiv region), where the concentration of the element exceeds the standard by almost 4 times. A comparative analysis to determine the relationship between the manganese and ferrum concentrations and the depth of water intake structures did not show any regularities characteristic of natural waters undisturbed by technogenic activity. It was revealed that the largest deviations from the background values for manganese are typical for the Dnipropetrovsk region, and for ferrum — for the Kyiv city. Statistically significant relationships between the concentrations of manganese and ferrum in the examined samples were not found, which indicates the different geochemical nature of the elements concentration processes in the studied groundwater. Using the specialized software tools Hydra and Medusa, the finding forms of manganese depending on the pH of the water environment in studied samples were calculated. The obtained ratios of the element soluble forms for conditionally clean and technologically polluted territories of Ukraine made it possible to establish that in the water of conditionally clean territories, manganese migrates mainly in the form of free Mn2+ ion, and to a much lesser extent (11%) in the form of MnSO4. On the other hand, within the technologically polluted territories, the key role belongs to the inorganic ligand SO42–, the ratio of soluble compounds MnSO4 and Mn2+ is, respectively, 56% to 44%. The obtained results can serve as a basis for the selection of criteria when performing biogeochemical zoning of the territory of Ukraine.

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Section: Water Chemistry and Movement In The Unsaturated Zonementioning

confidence: 93%

Section: Water Chemistry and Movement In The Unsaturated Zonementioning

confidence: 99%

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Ecological and Geochemical Features of Manganese Distribution in Groundwaters of Ukraine

Kоshliakova

2023

Mìneral. ž.

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“…Although ground water quality changes are known to be associated with atmospheric moisture anomalies, only a few attempts have been made to establish the degree of association and the temporal (lag time between moisture anomalies and quality changes) and geographical relationships involved (Krothe and Libra, 1983;Whittemore, 1978;Laney, 1977). In order to do so, several long term Kansas water quality records were correlated with precipitation and selected derived climatic indices.…”

Section: Climatic Indices and Proceduresmentioning

confidence: 99%

GROUND WATER QUALITY PREDICTION USING CLIMATIC INDICES¹

McGregor¹,

Marotz²,

Whittemore

1988

J American Water Resour Assoc

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Drought affects the quality of ground water in certain aquifers used by municipalities in Kansas. Water quality changes occur as a function of the amount of water available for recharge and hence to dilute more mineralized ground waters. Several measures of meteorological drought, including the Palmer Index and Eagleman Aridity Index, were correlated with water quality data to determine the degree of association. Several locations showed sharp delinces in water quality as the drought progressed. These relationships can be used to predict possible variations in present and future well‐water supplies in locations subject to drought induced water quality deterioration.

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Study and interpretation of the chemical characteristics of natural water

1985

134

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Effects of phreatophyte removal on water quality in the Gila River Phreatophyte Project area, Graham County, Arizona

Abstract: The following factors may be used to convert the English units to the International System units (SI). This report contains both the English and SI units equivalents.

Cited by 3 publications

References 2 publications

Ecological and Geochemical Features of Manganese Distribution in Groundwaters of Ukraine

Ecological and Geochemical Features of Manganese Distribution in Groundwaters of Ukraine

GROUND WATER QUALITY PREDICTION USING CLIMATIC INDICES¹

Study and interpretation of the chemical characteristics of natural water

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Effects of phreatophyte removal on water quality in the Gila River Phreatophyte Project area, Graham County, Arizona

Abstract: The following factors may be used to convert the English units to the International System units (SI). This report contains both the English and SI units equivalents.

Cited by 3 publications

References 2 publications

Ecological and Geochemical Features of Manganese Distribution in Groundwaters of Ukraine

Ecological and Geochemical Features of Manganese Distribution in Groundwaters of Ukraine

GROUND WATER QUALITY PREDICTION USING CLIMATIC INDICES1

Study and interpretation of the chemical characteristics of natural water

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Product

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GROUND WATER QUALITY PREDICTION USING CLIMATIC INDICES¹