Pesticides lead isotopic compositions

Table 12.1 Lead isotopic compositions of pesticides, herbicides, and feed additives... 

Although the predominant source of arsenic and metals to most soils and sediments in New England is sulfide-rich rock, the extensive application of arsenical pesticides and herbicides (lead arsenate, calcium arsenate, and sodium arsenate, and others) on apple, blueberry, and potato fields may have been a possible anthropogenic source of arsenic and lead. The main objective of this study was to determine the lead isotopic compositions of commonly used pesticides, such as lead arsenate, sodium metarsenite, and calcium arsenate, in order to assist in future isotopic comparisons and to better characterize this anthropogenic source of Pb. The pesticides plot along a linear trend in isotope diagrams, for example, in values of... 

Ayuso, R., Foley, N., Robinson, G., Jr., Wandless, G., and Dillingham, J. (2004b). Lead isotopic compositions of common arsenical pesticides used in New England. United States Geological Survey. Open-file report 2004-1342, 14. [URL http //pubs.usgs.gov/of/2004/1342/]. 

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