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L. P. Gough, L. L. Jackson and J. A. Sacklin, “Determining Baseline Element Composition of Lichens. II. Hypogymnia Entermorpha and Usnea spp. at Redwood National Park, California,” Water Air and Soil Pollution, Vol. 38, 1988, pp. 169-180.

has been cited by the following article:

• TITLE: Metals, Metalloids and Toxicity in Date Palms: Potential Environmental Impact

  AUTHORS: John R. Williams, Avin E. Pillay

  KEYWORDS: Date Palm, Metalloids, Metals, Toxicity

  JOURNAL NAME: Journal of Environmental Protection, Vol.2 No.5, July 13, 2011

  ABSTRACT: This paper summarizes our studies on metal and metalloid uptake by the date palm, Phoenix dactylifera L., a tree of considerable importance in arid regions. The typical concentrations of 17 elements in the date palm are summarized and compared with existing data in the scientific literature. The role and toxicity of these elements are considered. Issues encountered by us during sample collection, pre-treatment and chemical analysis are described. Future studies are suggested.