title: Arsenic uptake in orchard trees: implications for dendroanalysis.
abstract: The distribution of arsenic in the stems of fruit trees grown in soils exposed to arsenical pesticides has been studied using neutron activation analysis. The results show arsenic to be confined mainly to heartwood near the pith and active xylem tissue in the most recent annual growth rings. These results suggest that dendroanalysis for arsenic in fruit trees will not yield a reliable chronology of arsenic exposure.
authors.affiliation: Department of Chemistry, University of Western Ontario, London, Canada. rrhm@julian.uwo.ca
authors.forename: R R
authors.initials: RR
authors.lastname: Martin
authors.forename: A
authors.initials: A
authors.lastname: Tomlin
authors.forename: B
authors.initials: B
authors.lastname: Marsello
mesh_terms: D001149:Arsenates / Q000494:pharmacology; D001151:Arsenic / Q000032:analysis* / Q000493:pharmacokinetics*; D005638:Fruit; D007854:Lead / Q000494:pharmacology; D010575:Pesticides / Q000494:pharmacology; D018547:Plant Stems / Q000737:chemistry / Q000254:growth & development / Q000378:metabolism; D012989:Soil Pollutants / Q000032:analysis; D014197:Trees / Q000737:chemistry / Q000254:growth & development* / Q000378:metabolism*
chemical_list: D001149:Arsenates; D010575:Pesticides; D012989:Soil Pollutants; D007854:Lead; C045846:lead arsenate; D001151:Arsenic