000			02116 am a22002293u 4500
042			_adc
100	1	0	_aShields, William R. _eauthor _9327
700	1	0	_aGarner, Ernest L. _eauthor _9328
700	1	0	_aDibeler, Vernon H. _eauthor _9329
245	0	0	_aAbsolute Isotopic Abundance of Terrestrial Silver
260			_b[Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology, _c1962.
500			_a/pmc/articles/PMC5327739/
520			_aIsotopic abundance ratios are reported for a commercial silver nitrate, 13 samples of native silver, and 11 silver minerals of various compositions and from widely distributed deposits. Collateral measurements of known mixtures of nearly pure silver isotopes permit the determination of absolute abundance ratios. Native silver from Cobalt, Ontario, previously reported as exhibiting statistically significant variation, is re-examined. Additional measurements are reported for samples from the same nugget and from the same region. Except for the original observation, no significant variation from normal abundance is observed for any of the samples. The Ag(107)/Ag(109) ratio obtained from pooling the data is 1.07597 with a 95 percent confidence limit of ±0.00055 for the effect of random errors and a total uncertainty of ±0.00135 when an allowance for the possible effects of known sources of systematic error is included.
540			_a
540			_ahttps://creativecommons.org/publicdomain/zero/1.0/
540			_aThe Journal of Research of the National Bureau of Standards Section A is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
546			_aen
690			_aArticle _9330
655	7		_aText _2local _9331
786	0		_nJ Res Natl Bur Stand A Phys Chem
856	4	1	_uhttp://dx.doi.org/10.6028/jres.066A.001 _zConnect to this object online.
999			_c112 _d112