title: Testing the resistance of fullerenes to chemothermal oxidation used to isolate soots from environmental samples.
abstract: We tested the resistance of five different fullerenes (C(60), C(70), C(76/78) mix, and C(84)) to chemothermal oxidation at 375 °C (CTO-375), a method that has been used and tested for quantifying black carbon (BC) and CNTs in soils and sediments. C(60) survived CTO-375 the most (50%), while C(70) was the fullerene with the lowest survival rate (<1%). Standard additions of C(60) to soil and sediment reference materials yielded recoveries between 18 and 36%. Although lower than recoveries previously observed for soot and CNTs, these results demonstrate the capability of CTO-375 to partially isolate C(60) from solid environmental matrices. Standard additions of C(70), C(76/78), and C(84) yielded slightly higher survival rates when added to soil and sediment than in their pure form. These results indicate that the mineral matrices of these samples probably had a catalytic effect towards C(60) and a protective effect towards C(70), C(76/78), and C(84) during CTO-375.
authors.affiliation: Agroscope Reckenholz-Tänikon Research Station ART, Reckenholzstrasse 191, 8046 Zürich, Switzerland. deborah.flores-cervantes@art.admin.ch
authors.forename: D Xanat
authors.initials: DX
authors.lastname: Flores-Cervantes
authors.forename: Thomas D
authors.initials: TD
authors.lastname: Bucheli
mesh_terms: D004784:Environmental Monitoring / Q000379:methods*; D004785:Environmental Pollutants / Q000737:chemistry*; D037741:Fullerenes / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry; D010084:Oxidation-Reduction; D053260:Soot / Q000737:chemistry*
chemical_list: D004785:Environmental Pollutants; D037741:Fullerenes; D053260:Soot