Validation of a Sulfuric Acid Digestion Method for Inductively Coupled Plasma Mass Spectrometry Quantification of TiO2 Nanoparticles.
A consistent analytical method incorporating sulfuric acid (H2SO4) digestion and ICP-MS quantification has been developed for TiO2 quantification in biotic and abiotic environmentally relevant matrices. Sample digestion in H2SO4 at 110°C provided consistent results without using hydrofluoric acid or microwave digestion. Analysis of seven replicate samples for four matrices on each of 3 days produced Ti recoveries of 97% ± 2.5%, 91 % ± 4.0%, 94% ± 1.8%, and 73 % ± 2.6% (mean ± standard deviation) from water, fish tissue, periphyton, and sediment, respectively. The method demonstrated consistent performance in analysis of water collected over a 1 month.
['Watkins|Preston S|PS|', 'Castellon|Benjamin T|BT|', 'Tseng|Chiyen|C|', 'Wright|Moncie V|MV|', 'Matson|Cole W|CW|', 'Cobb|George P|GP|http://orcid.org/0000-0001-8675-1283']
D000818:Animals D005399:Fishes D013058:Mass Spectrometry D008872:Microwaves D053758:Nanoparticles D013464:Sulfuric Acids D014025:Titanium
Nanoparticle ICP-MS Analysis Water Tissue Sediment Titanium dioxide