Accumulations and temporal trends of polychlorinated biphenyls (PCBs) in olive tree components

EKER ŞANLI G., TAŞDEMİR Y.

ENVIRONMENTAL GEOCHEMISTRY AND HEALTH, vol.44, no.8, pp.2577-2594, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 44 Issue: 8
  • Publication Date: 2022
  • Doi Number: 10.1007/s10653-021-01046-2
  • Journal Name: ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Chemical Abstracts Core, EMBASE, Environment Index, Geobase, INSPEC, MEDLINE, Pollution Abstracts, Veterinary Science Database
  • Page Numbers: pp.2577-2594
  • Keywords: Biomonitoring, Bioindicator, POPs, Leaf, Branch, Suburban, PERSISTENT ORGANIC POLLUTANTS, POLYCYCLIC AROMATIC-HYDROCARBONS, PASSIVE AIR SAMPLERS, ORGANOCHLORINE PESTICIDES, SPATIAL CHARACTER, DRY DEPOSITION, SUBURBAN SITE, SOIL EXCHANGE, PINE NEEDLES, AMBIENT AIR
  • Bursa Uludag University Affiliated: Yes

Abstract

In this study, ambient air samples, olive tree branches (1- and 2-year-old) and their leaves (particulate and dissolved phase) were collected simultaneously between January and December months at a suburban site of Bursa-Turkey. Total polychlorinated biphenyl (PCB) concentrations, sampled by employing passive air samplers, ranged from 0.03 to 0.08 ng/m(3) in the atmosphere. The average annual total PCB concentrations belonging to the tree components were 1.14 +/- 0.32 ng/g DM in dissolved phase in leaves, 0.71 +/- 0.32 ng/g DM in particle phase on leaves, 1.06 +/- 0.25 ng/g DM in 1-year-old branches, and 0.93 +/- 0.23 ng/g DM in 2-year-old branches. It was determined that the correlation between PCB concentrations in olive tree components and the air was low. This result indicated that besides the tree-air exchange, other possible factors (such as soil-to-tree transitions, wind effect, etc.) affect the levels of PCB concentrations in the tree components. Total PCB concentrations decreased from summer to winter in all samples. The percentage ratio of PCB in the dissolved phase in the leaves was generally higher than other tree components in seasons. PCB homologous distributions indicated 5-CBs were dominant in the tree components and 3-CBs were dominant in the air samples. Highly chlorinated PCB congeners (8-CBs and 9-CBs) were found at low concentrations in both air and tree components samples. The samples indicated that the ratio of PCBs in tree components to the total (tree component+ambient air) PCBs slightly increased with increasing the chlorine number.