Literature study on sample preparation and storage for speciation analysis of arsenic in aqueous solutions.
Independent thesis Advanced level (degree of Master (Two Years)), 10 credits / 15 HE creditsStudent thesis
The purpose of this literature review is to make a compilation of which kind of general procedures and preservatives have been used in previous studies to stabilize arsenic species As(III) and As(V) especially inorganic in aqueous samples for a certain known period.
The role of various preservatives like different mineral acids, EDTA, EDTA-HAc, selection of their concentration according to sample matrix especially considering Fe, Mn, Ca and microorganisms to get maximum desirable stability results are studied. pH is also an important factor which is responsible for oxidation and reduction of As species. Important general procedures like filtration, selection of container (to reduce photochemical reactions and adsorption), refrigeration and microbiological activities are important factors that can alter As(III)/As(V) distribution. The importance of filter and acids to minimize microbiological activities responsible for speciation change has also been studied in this literature review.
Place, publisher, year, edition, pages
2012. , 34 p.
IdentifiersURN: urn:nbn:se:umu:diva-55723OAI: oai:DiVA.org:umu-55723DiVA: diva2:528958
Tesfalidet, Solomon, univ lektor
Hedlund, Tomas, univ lektor