Modeling cadmium concentration in water of Lake Chapala, Mexico

Hansen, Anne M.; Afferden, Manfred van

doi:10.1007/s00027-004-0695-8

Cited by 7 publications

(4 citation statements)

References 22 publications

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“…To model trace metal accumulation in the lake (Hansen and van Afferden, 2004) ity standards, ion charge and mass balances were described by the following equations:…”

Section: Ion Balance Estimationmentioning

confidence: 99%

Forecast of lake volume and salt concentration in Lake Chapala, Mexico

Afferden

Hansen

2004

Aquat. Sci.

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Using historical hydrological information and water quality records, an early warning system was developed to forecast short-and long-term trends in water level changes and volume-dependent major ion concentrations for Lake Chapala, Mexico. The developed tool allows one to forecast yearly minimum lake-water volumes with a 90% probability and less than ±5 % error. The long-term behavior of lake volume and its trend towards a new equilibrium was estimated by a second empirical approach, where water storage variations were calculated by estimating changes in total lake evaporation losses due to variations in lake area. Available historical water quality records were analyzed and, by applying subsequent Aquatic Sciences statistical data filtration, volume and time dependent trends in major ion concentrations were established. Mass and charge balances were applied to complete the datasets with concentrations of ions that are not measured during ordinary monitoring. Concerning water quality regulations, minimum lake volumes were proposed to guarantee the intactness of this important drinking water resource. Despite the uncertainties of these approaches, the early warning system presented provides a useful tool for short and long-term prediction of lake water storage and quality that may support management decisions related to the whole watershed.

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“…To model trace metal accumulation in the lake (Hansen and van Afferden, 2004) ity standards, ion charge and mass balances were described by the following equations:…”

Section: Ion Balance Estimationmentioning

confidence: 99%

Forecast of lake volume and salt concentration in Lake Chapala, Mexico

Afferden

Hansen

2004

Aquat. Sci.

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“…Regarding the other metal content, the Cd concentration was higher than the monthly and daily average stipulated in Mexican regulations (NOM-001-ECOL-1996) for irrigation water and was present in all water and soil sampling sites in both seasons. The presence of Cd in water during RS was greater than DS, which is generally associated with water levels in the lake and suspended sediments (Asati et al, 2016) as a result of decreasing water levels and the action of waves, Cd may be more susceptible to desorption in contaminated sediments and the increase of various ions (Hansen and Van Afferden, 2004). It was possible to observe the presence of lead in the soil during both DS and RS.…”

Section: Resultsmentioning

confidence: 90%

Presence of arsenic and potentially toxic metals (Cd, Cr, Pb) in water and soil of the NE shore of Chapala Lake, Mexico, and its genotoxic effect in the edible chayote fruit (Sechium edule (Jacq.) Sw.)

et al. 2020

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The presence of potentially toxic elements in waters used for agricultural irrigation is a latent problem in Lake Chapala, Mexico. Four sites in the polluted area of Chapala lake were studied in this research. Samples of irrigation water and soil were collected from each site in both the dry (DS) and rainy (RS) seasons. Arsenic (As), cadmium (Cd), chromium (Cr), and lead (Pb) were measured in all the samples. Comet assay was used to measure the migration of DNA from the nucleus in order to detect genotoxicity in fruits. ISSR molecular markers were used to assess the detection power of this marker in correspondence with amounts of metals in the samples. The results show a variation of metal concentrations in the DS and RS soil and water samples. The metalloid As in DS water samples exceeded the permissible limits in three of the sampling areas. Cd and Pb exceeded the prescribed limits from collected water in three of the sampling areas in RS. Cd exceeded the maximum permissible limits in soil collected during both DS and RS in the four sampling sites. Data on the concentration of metals shows significant differences between the sampling areas and the control site. Genetic damage (DNA migration from the nuclei) was found in the chayote fruit and the major migration of DNA was associated principally with the presence of As in DS water samples as well as Pb in soil in RS.

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“…[18] In this study, the distribution of metals between the iron oxy-hydroxides in surface sediments has been evaluated by use of a SCM as sediments are resuspended during storm events, as a function of Redox potential and sorbate/sorbent ratio in a natural river system. For this purpose, a method developed by Hansen and van Afferden [19] was modified to predict metals concentration in the future Arcediano Dam by using information obtained from water and sediment quality sampling and analyses, and applying a chemical equilibrium model to estimate the possibility of an increase in metals concentration. It has been shown that increasing sediment accumulation in the Arcediano Dam could lead to an increase in dissolved metals that, in the future, might affect the quality of water to be purified for human consumption.…”

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confidence: 99%

Scenarios of metal concentrations in the Arcediano Dam (State of Jalisco, Mexico)

Hansen¹,

González-Márquez²

2010

Journal of Environmental Science and Health, Part A

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The city of Guadalajara, Jalisco, Mexico has 4.1 million inhabitants and a serious deficit in water supply. Once constructed, the Arcediano Dam will catch waters from the Verde and Santiago rivers, and after treatment will provide water to the city. The present study was undertaken to formulate scenarios and estimate risks of polluting the water that will be collected in the dam from the release of contaminants accumulated in sediments. Desorption of metals from sediments was estimated through sampling of water and sediments, chemical analyses of the environmental samples, and numerical modeling of the water-sediment interactions. Water quality generally increased as the river flowed downstream from the El Salto sampling station to the site where the Arcediano Dam will be constructed. Aluminum exceeded the Mexican Criterion for Drinking Water Supply (MCDWS), at all sampling stations, whereas iron and manganese surpassed the criteria at some stations. Trace metals were below their respective criteria. For sediment samples in the river, chrome, copper and zinc exceeded the Canadian Interim Sediment Quality Guidelines (ISQG), whereas manganese and nickel exceeded the probable effect level (PEL). Other metals were below these limits. With exception of the El Salto sampling station, metals were mostly enriched in iron-containing sediments, followed by aluminum-containing clays and, to a lesser extent, by manganese oxides. Therefore, the interaction of metals with iron oxides was considered as the controlling adsorption mechanism. Simulations to estimate risks of water contamination by desorption of metals from sediments indicate that manganese and nickel may reach concentrations higher than the CDWS. In some cases, dissolved concentrations of lead and chrome may be higher than the respective CDWS, especially under conditions of high accumulation of sediments in the dam. Arsenic, copper and mercury concentrations did not exceed the CDWS under the simulated conditions.

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Modeling cadmium concentration in water of Lake Chapala, Mexico

Cited by 7 publications

References 22 publications

Forecast of lake volume and salt concentration in Lake Chapala, Mexico

Forecast of lake volume and salt concentration in Lake Chapala, Mexico

Presence of arsenic and potentially toxic metals (Cd, Cr, Pb) in water and soil of the NE shore of Chapala Lake, Mexico, and its genotoxic effect in the edible chayote fruit (Sechium edule (Jacq.) Sw.)

Scenarios of metal concentrations in the Arcediano Dam (State of Jalisco, Mexico)

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