Díez, E. G., Corella, J. P., Adatte, T., Thevenon, F., & Loizeau, J. (2017). High-resolution reconstruction of the 20th century history of trace metals, major elements, and organic matter in sediments in a contaminated area of Lake Geneva, Switzerland. Applied Geochemistry, 78, 1-11.
In Vidy Bay to Lake Geneva of Switzerland, an area of the lake was examined due to known contamination of that part of the lake. A major concern was toxic trace metals in laucstrine sediments, as it is hazardous to biota and the human health. The bay had been affected by hazardous compounds due to sewage effluent from a major waste treatment plant, and as well traces of anthropogenic metals were found, suspected to be found due to rise of industrialization in Europe. Studies done in 1964 found that the highest trace of toxic metals was, Ni, Cr, Co, Ag, Fe, and several others. A correlation was found that it was the same year the waste treatment plant had been built. After some improvements had been made to the waste treatment plant, and the relocation of the outlet pipe, it was noticeable that sediments returned to a more concentrated form similar to that of before the waste treatment plant had been built. Even with the improvements done, there still is evident in Vidy Bay a major contamination that constitutes a potential threat to the lake biota.
Liu, Z., Zhao, M., Sun, H., Yang, R., Chen, B., Yang, M., . . . Zeng, H. (2017). “Old” carbon entering the South China Sea from the carbonate-rich Pearl River Basin: Coupled action of carbonate weathering and aquatic photosynthesis. Applied Geochemistry, 78, 96-104.
In the South China Sea it was found that "old" carbon from the Pearl River Basin was entering in. Both particulate organic carbon (POC) and dissolved organic carbon (DIC) were found to be exporting to the sea of negative 14C. Pearl River Basin is known to be the second largest river in China , and is strongly affected by the South Asian monsoon and the East Asian monsoon. Samples were taken from the Pearl River Basin in 14 different sites, and many of the containing, C, CO, PO, and many of the finding relating to POC and DIC that were found to be exporting to the sea. It is suggested that the river has a major control on the carbon isotopes. Results suggest that the fact the river basin is rich in carbon isotopes, many other coastal regions and other areas may as well be affected by it, and have had thoughts to do the experiment to a global level.
Thursday, 9 February 2017
Thursday, 2 February 2017
Entry #4
Carreira, P. M., Neves, M. O., Figueiredo, P., Marques, J. M., Nunes, D., Rei, J. C., & Caracho, A. J. (2017). Geochemistry and Environmental Isotopes as Natural Tracers of Groundwater Flow in Shallow Aquifer Systems within Lisbon Volcanic Complex (Portugal). Procedia Earth and Planetary Science, 17, 634-637.
Within Lisbon Portugal, Geochemistry and Environmental Isotopes were used as natural tracers of the groundwater flow in the volcano's aquifer systems. Chemicals and isotopic were collected within the groundwater, to find the heat transfer within the groundwater. Results found was levels of pH was around 7 to 10 on the scale, the differences that could be found in the chemical and isotopic could be connected to the different flow patterns within the volcano.
Fuge, R., & Johnson, C. C. (2015). Iodine and human health, the role of environmental geochemistry and diet, a review. Applied Geochemistry, 63, 282-302.
Iodine is an important part of the human diet, and having a deficiency in the levels of iodine in the body can lead to a number of health conditions, an example being Iodine Deficiency Disorders(IDD). The geochemistry of iodine being one the elemental iodine from biological and non-biological sources in the oceans being a major component of its global cycle. Climate scientists have found that iodine in the atmosphere is part of the destruction of the ozone, also being linked to iodine oxides in the formation of ultrafine particles are what is part of the cloud condensation. Iodine is found throughout many places, soil, groundwater, the atmosphere, etc. The role that environmental geochemistry has in it, especially in IDD is that in many coastal areas there is a sufficient intake of iodine, from naturally taking it in from inhalation of iodine vapors from coastal kelp beds. Areas found where there was more of a dificiency was due to the limestone in the soil of the places, and has become high in many countries.
Within Lisbon Portugal, Geochemistry and Environmental Isotopes were used as natural tracers of the groundwater flow in the volcano's aquifer systems. Chemicals and isotopic were collected within the groundwater, to find the heat transfer within the groundwater. Results found was levels of pH was around 7 to 10 on the scale, the differences that could be found in the chemical and isotopic could be connected to the different flow patterns within the volcano.
Fuge, R., & Johnson, C. C. (2015). Iodine and human health, the role of environmental geochemistry and diet, a review. Applied Geochemistry, 63, 282-302.
Iodine is an important part of the human diet, and having a deficiency in the levels of iodine in the body can lead to a number of health conditions, an example being Iodine Deficiency Disorders(IDD). The geochemistry of iodine being one the elemental iodine from biological and non-biological sources in the oceans being a major component of its global cycle. Climate scientists have found that iodine in the atmosphere is part of the destruction of the ozone, also being linked to iodine oxides in the formation of ultrafine particles are what is part of the cloud condensation. Iodine is found throughout many places, soil, groundwater, the atmosphere, etc. The role that environmental geochemistry has in it, especially in IDD is that in many coastal areas there is a sufficient intake of iodine, from naturally taking it in from inhalation of iodine vapors from coastal kelp beds. Areas found where there was more of a dificiency was due to the limestone in the soil of the places, and has become high in many countries.
Thursday, 26 January 2017
Entry #3:
Eze, P. N., Knight, J., & Evans, M. (2016). Tracing recent environmental changes and pedogenesis using geochemistry and micromorphology of alluvial soils, Sabie-Sand River Basin, South Africa. Geomorphology, 268, 312-321.
In South Africa studies were done to see changes in the enviroment due to chemical weather, by using geochemical proxies. Sabie River was the precise location they did studies at, due to it being the most biological diverse river. The reason they used geochemical proxies was the evaluation of soil, and it was a highly successful way of determining chemical weathering. Results found by the geochemical proxie, was that Silicon Dioxide was the dominant mineral in the soil, and the conclusion from this and the other studies done, was that soils in the Sabie River were weakly developed. Strong evidence was found that there were effects of aggradation-degradation cycles related to how the climate had been, and the foods. Though even with the studies done, and the gathered research time of the environmental changes along the Sabie River is not established.
Nejeschlebová, L., Sracek, O., Mihaljevič, M., Ettler, V., Kříbek, B., Knésl, I., . . . Mapani, B. (2015). Geochemistry and potential environmental impact of the mine tailings at Rosh Pinah, southern Namibia. Journal of African Earth Sciences,105, 17-28.
In Southern Namibia the mine tailings at Rosh Pinah were investigated, the mine being operated for about 47 years. The climate around the area during the summer is from about 30 to 40C, being considerably hot during then and even during the winter at being about 20 to 25C. Soil in the area having a coarse texture and classified as Haplic Regosols, consisting of pH levels in the alkaline range. Results show that the grounds were well neutralized in the mine tailings, due to an abundance of dolomite, and many minerals were found throughout the land as well in the water.
In South Africa studies were done to see changes in the enviroment due to chemical weather, by using geochemical proxies. Sabie River was the precise location they did studies at, due to it being the most biological diverse river. The reason they used geochemical proxies was the evaluation of soil, and it was a highly successful way of determining chemical weathering. Results found by the geochemical proxie, was that Silicon Dioxide was the dominant mineral in the soil, and the conclusion from this and the other studies done, was that soils in the Sabie River were weakly developed. Strong evidence was found that there were effects of aggradation-degradation cycles related to how the climate had been, and the foods. Though even with the studies done, and the gathered research time of the environmental changes along the Sabie River is not established.
Nejeschlebová, L., Sracek, O., Mihaljevič, M., Ettler, V., Kříbek, B., Knésl, I., . . . Mapani, B. (2015). Geochemistry and potential environmental impact of the mine tailings at Rosh Pinah, southern Namibia. Journal of African Earth Sciences,105, 17-28.
In Southern Namibia the mine tailings at Rosh Pinah were investigated, the mine being operated for about 47 years. The climate around the area during the summer is from about 30 to 40C, being considerably hot during then and even during the winter at being about 20 to 25C. Soil in the area having a coarse texture and classified as Haplic Regosols, consisting of pH levels in the alkaline range. Results show that the grounds were well neutralized in the mine tailings, due to an abundance of dolomite, and many minerals were found throughout the land as well in the water.
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