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Boron sources and transport mechanisms in river waters collected from southwestern Taiwan Isotopic evidence


, : Boron sources and transport mechanisms in river waters collected from southwestern Taiwan Isotopic evidence. Journal of Asian Earth Sciences 58(none)

Boron (B) isotopes are sensitive tracers for constraining water-rock interactions and pollution sources in river systems. In this study, we analyzed ?11B using multi-collector inductive coupled plasma mass spectrometry, in addition to major and trace elements, to delineate B sources and transport mechanisms in two river catchments, the largest Kao-ping River and the most polluted Erren River in southwestern Taiwan. Dissolved ?11B values vary more than 35 in Kao-ping River, but keep relatively constant in Erren River, 12.2-26.7 . Four major B sources identified in these river waters are cyclic seasalt, water/rock interaction, geothermal water and anthropogenic inputs. All specimens collected near the estuaries were influenced strongly by the seawater, B=4.5 mg/L and ?11B =39.5 . The Erren River results provide unique information on B and ?11B compositions in anthropogenic sources, in particular for fertilizer and hog manure, characterized with high B (up to 3.43 mg/L) and intermediate ?11B (average 13 ). The low ?11B values in 2006 Kao-ping River are attributed to contributions from local geothermal inputs, average 2.5 ppm and 2 , prior to massive landslides caused by 2009 Morakot typhoon. Mass balance calculations suggest that major contribution of B in river waters was derived from silicate weathering, characterized by low B and intermediate ?11B, contributed approximately 49-97% in 2010 Kao-ping River. The detected changes of ?11B (?w-rock) reaches a maximum variation of 18 during chemical weathering in catchment and highlights the importance of water/rock interaction enhancement after major climatic events. Four major B sources were identified in Kao-ping and Erren river waters. Unique B and ?11B in anthropogenic sources was identified in the Erren results. Silicate weathering contributes major B in the river waters. The importance of water/rock interaction enhanced after major climatic events.

US$19.90

DOI: 10.1016/j.jseaes.2012.07.008


Other references

Hine, T.J.; Roberts, N.B.; Taylor, W.H., 1994: Vertebral osteoporosis Effect of age on vitamin D metabolites before and during therapy. Clinical Science (London) 86(2): 24P

Lai, C.F.; Ripperger, J.; Morella, K.K.; Wang, Y.; Gearing, D.P.; Fey, G.H.; Baumann, H., 1995: Separate signaling mechanisms are involved in the control of STAT protein activation and gene regulation via the interleukin 6 response element by the box 3 motif of gp130. The cytoplasmic receptor sequences required for the transcriptional control via the IL-6 response element (IL-6RE) and the hematopoietin receptor response element (HRRE) in hepatoma cells were defined by transient expression of wild-type and mutan...

Vural, M.; Ucar, O.; Celebi, O.Ozcan.; Cicekcioglu, H.; Durmaz, H.Ali.; Selvi, N.Alper.; Koparal, S.; Aydogdu, S., 2010: Evaluation of effective regurgitant orifice area of mitral valvular regurgitation by multislice cardiac computed tomography. The purpose of our study was to assess the diagnostic accuracy of multislice computed tomography (MSCT) for the identification and quantification of mitral valve regurgitation in comparison with transthoracic echocardiography (TTE). Twenty-six pat...

Goya, M.; Cabero, L.; Carreras, E., 2016: Cervical Pessary and Preterm Singleton Birth. New England Journal of Medicine 375(6): E10-E10

Barber, S.A.; Walker, J.M.; Vasey, E.H., 1963: Mechanisms for the movement of plant nutrients from the soil and fertilizer to the plant root. In this review it is stated that plant nutrients in the soil reach the root by root extension, by mass-flow in aqueous solution and by diffusion. The first process enables <3% of available nutrients to be reached and may satisfy the plant'...

Cobbold, J.F.L.; Anstee, Q.M.; Taylor-Robinson, S.D., 2011: The importance of fatty liver disease in clinical practice. The worldwide obesity epidemic over the last 20 years has led to a dramatic increase in the prevalence of non-alcoholic fatty liver disease, the hepatic manifestation of the metabolic syndrome. Estimates of prevalence vary depending on the populat...

Nagy, E.S.; Paris, M.C.J.; Taylor, R.G.; Fuller, P.J.; Sourial, M.; Justice, F.; Bines, J.E., 2004: Colostrum protein concentrate enhances intestinal adaptation after massive small bowel resection in juvenile pigs. Objectives: Short bowel syndrome (SBS) usually results from the surgical removal of a large segment of small intestine. Patient outcome depends on the extent of intestinal resection and adaptation of the remaining intestine. We evaluated the impac...

Vassiliadis, P.K.lapothaki, V.P.padakis, J.T.ichopoulos, D.S.rie, C., 1978: Isolation of Salmonella from feces of healthy slaughter pigs, with three procedures of direct enrichment. Archives Hellenikon Institouton Paster79 24(24-25): 77-86

Perris, C.; Román, G.; Wählby, L., 1979: HLA antigens in patients with schizophrenic syndromes. HLA antigens were studied in 50 patients, 40 males, 10 females and two brothers of patients, all suffering from schizophrenic syndromes. The average duration of illness for the whole group was 18 +/- 1.5 years. The frequency of A10 antigen was inc...

Connely Melissa V., 1996: Stratigraphic studies of the relationship between ichthyosaur and plesiosaur species and the paleoenvironment found in the Upper Jurassic Sundance Formation of central and south central Wyoming. Special Publication - The Paleontological Society 8: 79