title: Method to detect minimal amounts of calcium dissolved in acidic solutions.
abstract: The study describes the application of the Arsenazo III method for detection of minimal amounts of calcium 12.4-49.4 micromol/l in different acidic solutions (hydrochloric acid, oxalic acid, maleic acid, phosphoric acid, tartaric acid, citric acid, lactic acid and acetic acid) adjusted to pH 2.0, 2.3 and 3.0. A mixture of the respective calcium concentrations with distilled water served as control. The experiments were run with ten repeats in series. Assessment of intra- and interassay coefficient of variation, and lower limit of quantification revealed that depending on the acid used, the Arsenazo III method is a reliable tool to quantify minimal calcium contents in acidic solutions.
authors.affiliation: Department of Operative Dentistry, Preventive Dentistry and Periodontology, Georg August University Göttingen, Göttingen, Germany. thomas.attin@med.uni-goettingen.de
authors.forename: T
authors.initials: T
authors.lastname: Attin
authors.forename: K
authors.initials: K
authors.lastname: Becker
authors.forename: C
authors.initials: C
authors.lastname: Hannig
authors.forename: W
authors.initials: W
authors.lastname: Buchalla
authors.forename: R
authors.initials: R
authors.lastname: Hilgers
mesh_terms: D001150:Arsenazo III; D002118:Calcium / Q000032:analysis*; D015203:Reproducibility of Results; D012996:Solutions
chemical_list: D012996:Solutions; D001150:Arsenazo III; D002118:Calcium