Surface-water quality for the Salí River watershed in NW Argentina

Abstract

Spatial and temporal variations of Na, Mg, were monitored through 37 sampling stations to determine the main aspects influencing the surface-water quality in the Salí River watershed (Tucumán Province, NW Argentina). The influence of the regional geological setting on water chemistry allows to distinguish three subbasins. The interaction with sedimentary rocks was found to be dominant in the northern and centraleastern sub-basin as well as in the southern subbasin, whereas the metamorphic-granitic basement of the Pampean Ranges was noted in the central subbasin. In addition, anthropogenic activities affect the spatial variation of K, P, Mn, Rb, and Pb as well as dissolved oxygen concentrations and Eh. Temporal water-quality variation is related to the spatial distribution of precipitation and to the seasonal character of the main local industries (sugar cane, alcohol, citrus), increasing P and K concentrations and decreasing dissolved oxygen concentration and Eh in winter. Cl -, Na, SO 4 2-, Al, As, B, Fe, Mn, Se and U concentrations exceed the regulated drinkingwater thresholds at several sampling stations.

Surface and groundwater quality in the northeastern region of Buenos Aires Province, Argentina

“…These values are similar to others observed in the region (Galindo et al, 1999) but much lower than those observed in other Pampean areas, such as La Pampa and Cordoba provinces (Nicolli et al, 1989;Smedley et al, 2002). One possible source of this trace element could be the volcanic ash in the sedimentary sequence, an interpretation also suggested in other regions of Argentina, such as Eastern Cordoba Province (Nicolli et al, 1989) and the Salí River watershed in NW Argentina (Fernandez-Turiel et al, 2003). At the northern part of La Pampa Province, Smedley and colleagues (2002) indicate primary magnetite and ilmenite as possible sources for As, as well as secondary Fe-Mn oxides in the loessoids.…”

Long-Term Environmental and Social Monitoring in the Andes: State of the Art, Knowledge Gaps, and Priorities for an Integrated Agenda

“…The effect of climate change was considered in 24 LTSEM systems, and international legislation was explicit in only 3 of these systems. Social–environmental studies were mainly focused on environmental quality (eg water and air conditions and urban solid wastes, n = 28), ecosystem services ( n = 25; eg Fernández-Turiel et al 2003), or the quantification of land-use and land-cover changes ( n = 24), and social aspects were usually disregarded (eg studies monitor environmental quality but do not explicitly quantify its effects on human health; Gramsch et al 2006). Only 4 of the identified LTSEMs focused solely on the social sciences (eg López-Sandoval and Maldonado 2019).…”

Surface Water Seepage Effects on Shallow Ground‐Water Quality Along the Rio Grande in Northern New Mexico1

“…, 2003). Bottles were acid washed and rinsed three times with deionized water before bottles were re‐used to reduce container contamination and enhance sample preservation (Hall, 1998; Fernandez‐Turiel et al. , 2003).…”

“…Two field duplicates were taken to increase precision and lab duplicates were used during analysis for quality control purposes (Carreón-Diazconti et al, 2003). Bottles were acid washed and rinsed three times with deionized water before bottles were re-used to reduce container contamination and enhance sample preservation (Hall, 1998;Fernandez-Turiel et al, 2003).…”