A Study of the Pearce-Low Method for the Determination of Tin in Ores
A Study of the Pearce-Low Method for the Determination of Tin in Ores
Botkin, Calyton Winfield
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Acid concentration 50 cc concentrated HCl in a total volume of 200 cc. (a) Reductions with iron for 30, 45 and 60 minutes. 50 min. Tin found. Error. .1956 gram -.0044 .1948 " -.0052 ,1961 " -.0039 ,1942 " -,0058 ,0007 B lank ,1952 " -,0048 45 min. Tin found. Error, .1958 gram -.0042 .1976 " -.0024 .1958 " -,0042 .1978 " -,0022 .0007 Blank ,1968 " 60 min. Tin found. Error, .1985 gram -.0015 ,1980 " -,0020 ,1993 " -.0007 .1951 " -.0049 ,0007 Blank ,1977 " -,0023 -,0032 ( The niunbers below the li...nes are averages,) Digitized by VjOOQIC Digitized by Google 11 ( Table lY oontlnued.) (Id) Beductions with nickel for 30, 45 and 60 minutes. 30 min. 45 mln. Tin foimd. Error. Tin found. Error. .1916 gram -.0084 .1968 gram -,003£ .1361 tf -.0639 .1927 n -.0073 .1682 n -.0318 .1956 n -.0044 .1822 It -.0178 .1951 n -.0049 .0005 Blank .0006 Blank .1695 n -.0305 .1951 n -.0049 60 min. Tin fotmd. Error. ,1979 gram -.0021 .1972 " -.0028 .1960 " -.0040 .1949 " -.0051 .1947 " -.0053 .0009 Blank .1961 " -.0039 ( Kumbers belov/ the lines are averages.) (o) Reductions with antimony for 10 minutes.
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