POZO, Karla Andrea, G. PERRA, V. GOMEZ, R. BARRA and R. URRUTIA. TEMPORAL TRENDS OF POLYCYCLIC AROMATIC HYDROCARBONS (PAHs) IN A DATED SEDIMENT CORE OF A HIGH ATITUDE MOUNTAIN LAKE: CHUNGARA LAKE-NORTHERN CHILE (18 degrees S). JOURNAL OF THE CHILEAN CHEMICAL SOCIETY. CONCEPCION: SOC CHILENA QUIMICA, 2014, vol. 59, No 3, p. 2564-2567. ISSN 0717-9707.
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Basic information
Original name TEMPORAL TRENDS OF POLYCYCLIC AROMATIC HYDROCARBONS (PAHs) IN A DATED SEDIMENT CORE OF A HIGH ATITUDE MOUNTAIN LAKE: CHUNGARA LAKE-NORTHERN CHILE (18 degrees S)
Authors POZO, Karla Andrea (380 Italy, belonging to the institution), G. PERRA (152 Chile), V. GOMEZ (152 Chile), R. BARRA (152 Chile) and R. URRUTIA (152 Chile).
Edition JOURNAL OF THE CHILEAN CHEMICAL SOCIETY, CONCEPCION, SOC CHILENA QUIMICA, 2014, 0717-9707.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10406 Analytical chemistry
Country of publisher Chile
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 0.353
RIV identification code RIV/00216224:14310/14:00080242
Organization unit Faculty of Science
UT WoS 000347833800008
Keywords in English HIGH-ALTITUDE LAKE; POLYCHLORINATED-BIPHENYLS; FLUXES; PCBS
Tags AKR, rivok
Changed by Changed by: Ing. Andrea Mikešková, učo 137293. Changed: 20/5/2015 14:04.
Abstract
In this study levels, fluxes and temporal trend of PAHs are reported in a sediment core from Chungara Lake (18 degrees S) in Northern Chile. The sediments were obtained by Kayac corer and freeze dried. PAHs were extracted in SOXHLET system and measured by HPLC with diode array detector and fluorescence detection. Sedimentary record chronology was determined using Pb-210 isotopes and organic carbon (%) was also measured in sediments. Concentrations (ng g(-1) d.w.) of PAHs were low ranging from similar to 1 to 50. PAHs fingerprint was dominated by 3-ring (21%) and 4-ring. Organic carbon (%) ranged from similar to 17 to 24 (21 +/- 3) and no statistical significant correlation (p<0.05) was detected between OC (%) and PAHs along the sediment core. PAHs fluxes (mu g m(-2)yr(-1)) fluctuated from similar to 0.3 (cm 1) to 35 (cm 5) in 1978. LPAHs/HPAHs ratios (0.04 to 3) indicate petrogenic and pyrolytic origin of PAHs. This results contributes with new information of PAHs deposition at high altitudinal lake in Southern Hemisphere.
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