"Use of Sodium Diethyldithiocarbamate in the Determination of Minute Amounts of Copper"

Moseley, Hal W.; Rohwer, Arthur G.; Moore, Margaret C.

doi:10.1126/science.79.2057.507.b

Cited by 3 publications

(2 citation statements)

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“…Concentrations containing 0.002 to 0.014 mg. of copper per ml. of carbon tetrachloride produced a greenish-yellow solution suitable for estimation in the photoelectric colorimeter (15), These concentrations agree with the results of Mosely, Rohwer, and Moore (14), who reported 0.005 to 0.040 mg. per ml. as the most accurate range of concentration for determining copper.…”

Section: Reagentssupporting

confidence: 90%

Colorimetric Determination of Copper in Aluminum Alloys

Patridge¹

1945

Ind. Eng. Chem. Anal. Ed.

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tion to a ground-glass stoppered bottle of soft glass (boron-free glassware is preferable, if available).After one hour, the solution may be compared visually to a series of sealed standards which can remain stable indefinitely. The photoelectric colorimeter may be employed as an alternate means of estimation. The instrument is adjusted to zero with concentrated sulfuric acid in the cell and readings are taken on all solutions, including a blank determination on boron-free steel which is run simultaneously. A No. 60 filter is used. The blank reading obtained is subtracted from the sample reading. The per cent of boron is then determined by referring to a curve previously drawn from a series of standards of increasing boron content.The standards are prepared from samples of boron-free steel, to which increments of standard boric acid solution equivalent to 0.001% boron are added. (Steel samples must be used in preparing the standards, as there is a proportionate retention of boron in the hydroxide precipitate.) A blank is carried along and deducted in the usual xvay.

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Section: Reagentssupporting

confidence: 90%

Colorimetric Determination of Copper in Aluminum Alloys

Patridge¹

1945

Ind. Eng. Chem. Anal. Ed.

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“…Adsorption experiments have been performed on the ' following cellulosic substances: commercial adsorbent cotton; Cross and Bevan cellulose prepared from white birch, probably Betula papyrifera, Marshall; commercial viscose rayon and commercial nitrate rayon, both supplied by the Rayon Works at Tomaszów, Poland; and commercial cuprammonium rayon, supplied by the Bemberg Aktien Gesellschaft at Barmen, Germany. The chemical composition of these cellulose products is described in detail in a recent paper by Wiertelak (8).…”

Section: Methodsmentioning

confidence: 99%