Optimising the determination of nitrate and phosphate in sea water with ion chromatography using experimental design
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2023, TrAC - Trends in Analytical ChemistryCitation Excerpt :Therefore, the rapid and in-situ monitoring of phosphate is of great significance for marine environmental monitoring and pollution prediction. Traditional phosphate detection technologies include electrochemical [184,185] and chromatographic [186] methods based on chemical reaction processes and some methods based on different physical or optical characteristic processes, such as colorimetric [187], fluorescence [188] and CL [189]. However, the traditional methods are mostly employed in laboratory condition with tedious process and high cost.
New method for electrochemical ion separation (ElONS) for chloride/nitrate separation using Ag/AgCl electrodes with a cation exchange membrane
2021, Journal of Environmental Chemical EngineeringCitation Excerpt :It is especially important as a pretreatment step for high-sensitivity analysis of trace amount of specific ions in saline water, and its importance is greater as the concentration of Cl- is higher [3–5]. For example, in ion chromatography (IC), the most widely used method of seawater anion analysis, Cl- must be diluted 100 times or more to avoid overloading IC Columns [6,7]. IC pretreatment involves separation methods based on ion exchange columns [8,9], chelating resins [10], and crystallization for selective removal of high concentrations of Cl- from seawater.
Detection methods of nitrate in water: A review
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Bio-remediation of acephate–Pb(II) compound contaminants by Bacillus subtilis FZUL-33
2015, Journal of Environmental Sciences (China)Citation Excerpt :Samples were collected by filtering with a 0.45 μm microporous membrane and stored at 4°C. Phosphate residues were detected by ion chromatography with a Metrosep A SUPP 5-250 column (Dahllöf et al., 1997). Chromatographic conditions were as follows: eluent: 3.6 mmol/L Na2CO3 with 2% acetone; column temperature: 40°C; flow velocity: 0.7 mL/min; and pretreated samples mixed with eluent at volume ratio of 1:99 (pretreated samples: eluent) before use (Shotyk et al., 1995; Fein et al., 1997).