J 2014

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)

POZO, Karla Andrea, G. PERRA, V. GOMEZ, R. BARRA, R. URRUTIA et. al.

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

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10406 Analytical chemistry

Country of publisher

Chile

Confidentiality degree

není předmětem státního či obchodního tajemství

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

Změněno: 20/5/2015 14:04, Ing. Andrea Mikešková

Abstract

V originále

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.