New methods for the direct determination of dissolved inorganic, organic and total carbon in natural waters by Reagent-Free™ Ion Chromatography and inductively coupled plasma atomic emission spectrometry

Stefánsson, Andri; Gunnarsson, Ingvi; Giroud, Niels

doi:10.1016/j.aca.2006.09.001

Cited by 110 publications

(58 citation statements)

References 28 publications

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“…Elements screened in the leachate included Al, As, Au, B, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Pb, Sb, Se, Si, Sr, Ti, U, V, and Zn. DOC was determined using ICP after the removal of inorganic C through acidifying the solution, as described by Stefansson et al [55]. 13 C CP/MAS solid-state NMR Solid state 13 C NMR for woodchips and biochar (raw samples and at sixth month) was done in the Centre for Advanced Imaging, the University of Queensland, using a Bruker Advance 300 high-resolution NMR spectrometer (MA, USA) interfaced to a 7.05 Tesla ULTRA-SHIELD bore magnet system.…”

Section: Leachate Chemistrymentioning

confidence: 99%

Dynamics in leachate chemistry of Cu-Au tailings in response to biochar and woodchip amendments: a column leaching study

You

Huang

et al. 2013

Environ Sci Eur

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Background: Phytostabilization has been advocated as a promising approach to reduce mine tailings' adverse effects to surrounding environment. With many years of efforts in both laboratory and field trials, organic amendments are found to be essential in tailing revegetation. Yet, the associate geochemical dynamics caused by different amendments has rarely been examined. As reactive minerals are usually rich in tailings, geochemical changes induced by amendments would influence seepage management and revegetation strategies. The present study aimed to investigate geochemical dynamics in Cu-Au tailing leachate, in response to amendments with biochar produced from hardwood timber at high charring temperature or woodchips of mixed native tree species in a column leaching experiment under laboratory conditions. Results: Results showed that the Cu-Au tailings tested in this study were relatively stable after natural weathering, with little resilience of peak salinity, stable pH and low levels of metals in leachate against the six cycles of leaching over 20 weeks. In comparison with the control without any amendments, biochar treatment did not cause any substantial changes in most examined properties of leachate, except for the reduction in dissolved organic C and NO 2

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Section: Leachate Chemistrymentioning

confidence: 99%

Dynamics in leachate chemistry of Cu-Au tailings in response to biochar and woodchip amendments: a column leaching study

You

Huang

et al. 2013

Environ Sci Eur

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“…Up-core variations in levels of geochemical elements (Al, Ca, Fe, K, Mn, Na, P and N) were determined using sequential acid digestion, using HF to break down silicates, HNO 3 to oxidise the organic matter, and H 2 O 2 to oxidise the resistant organics (Bock, 1979); concentrations were established using inductively coupled plasma optical emission spectroscopy (ICP-OES) (Stefá nsson et al, 2007). Geochemical accumulation rates were also calculated based on the product of chemical concentration (mg g À1 ) and SAR (g cm À2 yr À1 ) data while enrichment factor (EF)s were employed to distinguish between natural and anthropogenic sources of geochemical elements (Binford, 1990).…”

Section: Proxiesmentioning

confidence: 99%

Anthropocene environmental change in an internationally important oligotrophic catchment on the Atlantic seaboard of western Europe

et al. 2014

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“…Preliminary tests done on CO 2 standards (0, 2.27 and 4.54 mM CO 2 ) at temperatures between 20 and 50°C gave identical results on the carbonation meter (data not shown), but the efficiency of the meter outside that range was not tested. Geothermal water could be passed through an ice-cooled loop of tubing (Stefánsson et al, 2007) prior to injection into the carbonation meter to bring the water sample into a desirable temperature range.…”

Section: Parametermentioning

confidence: 99%

Determination of free CO2 in emergent groundwaters using a commercial beverage carbonation meter

Vesper

Edenborn

2012

Journal of Hydrology

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Keywords:Dissolved carbon dioxide (CO 2 ) Groundwater Alkalinity Carbonate Springs Mine water s u m m a r y Dissolved CO 2 in groundwater is frequently supersaturated relative to its equilibrium with atmospheric partial pressure and will degas when it is conveyed to the surface. Estimates of dissolved CO 2 concentrations can vary widely between different hydrochemical facies because they have different sources of error (e.g., rapid degassing, low alkalinity, non-carbonate alkalinity). We sampled 60 natural spring and mine waters using a beverage industry carbonation meter, which measures dissolved CO 2 based on temperature and pressure changes as the sample volume is expanded. Using a modified field protocol, the meter was found to be highly accurate in the range 0.2-35 mM CO 2 . The meter provided rapid, accurate and precise measurements of dissolved CO 2 in natural waters for a range of hydrochemical facies. Dissolved CO 2 concentrations measured in the field with the carbonation meter were similar to CO 2 determined using the pH-alkalinity approach, but provided immediate results and avoided errors from alkalinity and pH determination. The portability and ease of use of the carbonation meter in the field made it well-suited to sampling in difficult terrain. The carbonation meter has proven useful in the study of aquatic systems where CO 2 degassing drives geochemical changes that result in surficial mineral precipitation and deposition, such as tufa, travertine and mine drainage deposits.

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New methods for the direct determination of dissolved inorganic, organic and total carbon in natural waters by Reagent-Free™ Ion Chromatography and inductively coupled plasma atomic emission spectrometry

Cited by 110 publications

References 28 publications

Dynamics in leachate chemistry of Cu-Au tailings in response to biochar and woodchip amendments: a column leaching study

Dynamics in leachate chemistry of Cu-Au tailings in response to biochar and woodchip amendments: a column leaching study

Anthropocene environmental change in an internationally important oligotrophic catchment on the Atlantic seaboard of western Europe

Determination of free CO2 in emergent groundwaters using a commercial beverage carbonation meter

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