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Volume 3, Issue 2 (Suppl)
Trends in Green chem
ISSN: 2471-9889
Environmental & Green Chemistry 2017
July 24-26, 2017
Page 110
5
th
International Conference on
6
th
International Conference on
July 24-26, 2017 Rome, Italy
Environmental Chemistry and Engineering
Green Chemistry and Technology
&
Lithium tetrathiafulvalene carboxylate assisted inductively coupled plasma mass spectrometry
determination of total mercury in air particulate matter supported by electrochemical study of
preservation effects
Maja Budanovic
Nanyang Technology University, Singapore
T
hemulti-elemental analysis ofmercury via inductively coupled plasma-mass spectrometry (ICP-MS) in airborne particulate
matter (PM
2.5
) is still challenging due to the lack of accuracy for the low level mercury concentrations as a result of mercury
instability. Therefore, this study investigated the effect of old and new preservation agents such as gold, methionine and lithium
tetrathiafulvalene carboxylate (LiCTTF) to improve the determination of mercury for trace analysis of PM
2.5
samples. Statistical
analysis revealed that a concentration of 10 µg mL
-1
of LiCTTF was sufficient to obtain highly accurate results with t values of
0.1044 to 1.1239 and apparent recovery of 85% to 100%. An evaluation of the method revealed mercury spiked recovery of
91% and a detection limit of 0.0562 ng mL
-1
. The method was tested for determination of trace metals in PM
2.5
, demonstrating
rather low element concentrations for the stated location. The stated outcomes were examined by conducting electrochemical
studies of
in situ
interactions of mercury with LiCTTF and Tetrathiafulvalene (TTF). Cyclic voltammetry and square-wave
voltammetry analyses of mercury, and mercury in presence of LiCTTF and TTF revealed complexation between the metal and
sulphur-containing compounds.
Biography
Maja Budanovic is a Post-graduate Researcher at Nanyang Technological University in Singapore and has been serving as an SINGA (Singapore International
Graduate Award) Ambassador for A*STAR Agency for Science, Technology and Research. She has completed her Master’s degree in Analytical and Physical
Chemistry and Bachelor’s degree in Chemistry from the University of Zagreb.
maja001@e.ntu.edu.sgMaja Budanovic, Trends in Green chem, 3:2
DOI: 10.21767/2471-9889-C1-003