Premium
Study of the radial and axial distribution of heavy metals in oak growth rings by stripping voltammetry
Author(s) -
Queirolo F.,
Valenta P.,
Stegen S.,
Sanchez A. M.
Publication year - 1991
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140030413
Subject(s) - anodic stripping voltammetry , cadmium , copper , zinc , heavy metals , metal , chemistry , stripping (fiber) , analytical chemistry (journal) , cyclic voltammetry , environmental chemistry , materials science , electrochemistry , electrode , organic chemistry , composite material
The concentrations of the heavy metals (Cd, Pb, Cu, and Zn) have been determined in oak growth rings from the polluted region of Königstein, Germany, by differential pulse anodic stripping voltammetry and compared to those in soil. The radial distribution was found to be the same for all four metals studied and features a distinct increase in the recent growth rings and a marginal increase in the transition zone between sapwood and heartwood. The toxic metals cadmium and lead are preferentially bound to lower parts of the tree, whereas for essential metals copper and zinc, monotonous axial distribution has been found in the range 0–5 m. This points to different degrees of mobility of heavy metal complexes in wood material.