Stéphane Roy, , Philippe Négrel
A Pb isotope and trace element study of rainwater from the Massif Central (France)
Science of The Total Environment, Volume 277, Issues 1–3, 28 September 2001, Pages 225–239
ISSN: 0048-9697
http://www.worldcat.org/oclc/321079391


Stéphane Roy

BRGM. 3, Avenue C. Guillemin, BP 6009.45060, Orleans Cedex 01, France

Corresponding author.

s.roy@brgm.fr


Philippe Négrel

BRGM. 3, Avenue C. Guillemin, BP 6009.45060, Orleans Cedex 01, France

p.negrel@brgm.fr





"Abstract
Lead isotope ratios and Zn, Pb, Cu, Cd, Sb and Rb contents were measured in samples of rainwater collected over a period of 15 months from the Massif Central (France). Each sample, collected automatically at monthly intervals, represents a series of rainfall events. Rainwater chemistry was interpreted in terms of the chemical contributions from wet deposition and from different source regions for dust in the centre of France. Trace element concentrations in rainwater samples showed a wide range, particularly for Pb (1.30–465 µg/l), with variations decreasing for Cd (0.07–1.70 µg/l), Zn (1.00–54.00 µg/l), Cu (0.20–25.00 µg/l), Sb (~0–0.33 µg/l) and Ni (~0–15.00 µg/l). Trace element contents do not correlate with rainfall amount and no inter-element correlations are evident in the data. Lead is the most common trace metal found in the rainwater (mean value=996 µg/m2/y) while Sb is the least common element measured (mean value=1.12 µg/m2 /y). The composition of rainwater collected from the Massif Central shows a range in Pb isotope ratios from 17.935 to 19.22 (206Pb/204Pb), 15.578 to 15.73 (207Pb/204Pb) and 37.559 to 38.606 (208Pb/204Pb). A five-component mixing model involving contributions from the natural background, gasoline inputs from industrial and agricultural activity and a source resulting from mining waste may be used to explain both the Pb isotope signature and the fluctuations in trace metal contents of Massif Central rainwater.

Keywords
Lead isotope ratios; Heavy metals; Rainwater; Massif Central; France"
http://www.sciencedirect.com/science/article/pii/S0048969700008834

In comparison with stated normal amounts of aluminum found in the air.

(Quote) “…..Levels of aluminum in the air generally range from 0.005 to 0.18 micrograms (1 microgram, ?g, equals a millionth of a gram, 1 gram equals 0.0022 pound) of aluminum per cubic meter of air (0.005–0.18 ?g/m3 or 0.00018 mg/L) , depending on location, weather conditions, and level of industrial activity in the area. Most of the aluminum in the air is in the form of small suspended particles of soil (dust). Aluminum levels in urban and industrial areas may be higher and can range from 0.4 to 8.0 ?g/m3 ….”
http://www.eoearth.org/view/article/155461/

or (0.008 mg/l) [ 740.00 mg/L Alu content recorded in Rain water analysis from London- in studies from Wrights Patterson Airforce Laboratory just 5.0 mg/l caused harm to cellular function in the lungs]
http://www.dtic.mil/get-tr-doc/pdf?AD=ADA445568
https://mrmaxbliss.wordpress.com/2013/08...hemtrail-files/

http://www.worldcat.org/oclc/144877