Metallurgical Slags as Traces of a 15th century Copper Smelter

Studies of morbidity near a copper smelter.

Children living near a copper smelter in Tacoma, Washington, have been shown to have increased levels of urinary and hair arsenic. Studies of hearing, blood status and school attendance in exposed and nonexposed children failed to detect any differences in these parameters.

Extraction of Traces of Copper as Tetra-Butylammonium Tetrathiocyanato Copper (II) and Its Spectrophotometric Determination Using Eriochrome Black T

An extraction-spectrophotometric method for the determination of traces of copper (II) is described. The method is based on the quantitative extraction of copper as tetrabutylammonium tetrathiocyanato copper (II) into methyl isobutyl ketone, followed by spectrophotometric determination, using eriochrome black T as a metallochromic indicator. The red-violet mixed complex of copper absorbs at...

Potential causes of 15th century Arctic warming

Potential causes of 15th century Arctic warming using coupled model simulations with data assimilation E. Crespin, H. Goosse, T. Fichefet, and M. E. Mann Université catholique de Louvain, Institut d’Astronomie et de Géophysique Georges Lemaı̂tre, Chemin du Cyclotron, 2, 1348 Louvain la Neuve, Belgium Department of Meteorology, Department of Geosciences, and Earth and Environmental Systems Instit...

Transfusion of Blood in 15th Century

Mortality from Copper Smelter Emissions Circa 1967

Pope et al. (2007) found lowered monthly mortality rates during a 1967–1968 copper smelter strike, coincident with and attributed to widespread reduced airborne sulfate levels. The authors cited three “intervention” studies associating particulate emissions reductions with mortality reductions as supportive. Evidence below suggests that mortality reductions in the study by Pope et al. and “inte...