NDLI: A capillary electrophoresis method for the simultaneous analysis of ammonium and metals in animal wastes used in biogas production

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Analytical Methods Vol - 4 Issue - 7

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A capillary electrophoresis method for the simultaneous analysis of ammonium and metals in animal wastes used in biogas production

Content Provider	Royal Society of Chemistry (RSC)
Author	Virtanen, Vesa Lipponen, Maija Kallio, Johanna Jaakkola, Mari
Copyright Year	2012
Abstract	Capillary electrophoresis (CE) was studied for the simultaneous analysis of ammonium and metals from animal wastes used in biogas production. The feedstock materials for fermentation consisted of dairy manure and a mixture of dairy manure and fish offal waste. An imidazole background electrolyte containing 18-crown-6-ether and 30% methanol was capable of the efficient separation of ammonium, sodium, potassium, magnesium and calcium in the samples. CE results for the analysis of metals (K+, Ca2+, and Mg2+) in animal wastes were comparable to the results obtained with ICP-MS/OES analysis. Furthermore, the CE results of the analysis of ammonium in dairy manure samples were well comparable with the titrimetric/distillation method. Interestingly, the analysis of ammonium in fish waste samples by the titrimetric/distillation or the spectrophotometric method used was not reliable, likely due to matrix interferences. In contrast, the CE analysis of all analytes and matrices was reproducible and matrix interferences were not found. The reproducibility of the CE method calculated as the relative standard deviation was ≤10% both for the intra-day (n ≥ 7) analysis and during a three month inter-day (n = 45) study. The only sample pre-treatment needed was the dilution of water extract prior to the CE analysis. In addition, the separation time in CE analysis was only six minutes. Therefore, capillary electrophoresis can be considered to be a very competitive alternative method for rapid and reliable simultaneous analysis of ammonium and metals in fermentation samples containing animal wastes.
Starting Page	2278
Ending Page	2282
Page Count	5
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	4
Issue Number	8
Journal	Analytical Methods
DOI	10.1039/c2ay25307k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Distillation Ammonium 18-Crown-6 Ether Calcium Capillary electrophoresis Fermentation Coefficient of variation Anaerobic digestion Offal Electrolyte Sodium Imidazole Magnesium Spectrophotometry Potassium Methanol
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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