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Sulphur grain test

Recently it has been shown that low sulphur grain sociked in glutaraldehyde solution turns a deep brown or purplish brown, while high sulphur grain retains normal straw colour. The difference in colour obtained has been proposed as the basis for a simple test for sulphur deficiency. ... [Pg.394]

For minute quantities of arsenic, it is convenient to use the apparatus depicted in Fig. 11.56. Mix a drop of the test solution with a few grains of zinc and a few drops of dilute sulphuric acid in the micro test-tube. Insert the funnel with a flat rim, and place a small piece of drop-reaction paper moistened with 20 per cent silver nitrate solution on the flat surface. A grey stain will be obtained. [Pg.231]

Place a drop of the test solution (or a grain of the solid test sample) in the tube of Fig. 11.53 and coat the knob of the glass stopper with a thin layer of the zinc nitroprusside paste. Add a drop of 2m hydrochloric or sulphuric acid and close the apparatus. After the sulphur dioxide has been evolved, hold the stopper for a short time in ammonia vapour. The paste is coloured more or less deep red. [Pg.305]

Solution of Kitrate of Baryta. Dissolve 4 graius nitrate of baryta iu 80 grains water. This is nsed iu the same manner as chloride of barium (see A<>. 4774) for testing sulphuric acid, with tho same results. [Pg.293]

AES depth profiles of the test specimens after the grinding with the alumina grains. The values for sulphur and chlorine is multiplied by 5. [Pg.677]


See other pages where Sulphur grain test is mentioned: [Pg.721]    [Pg.327]    [Pg.397]    [Pg.400]    [Pg.401]    [Pg.411]    [Pg.445]    [Pg.581]    [Pg.730]    [Pg.736]    [Pg.740]    [Pg.891]    [Pg.947]    [Pg.948]    [Pg.1117]    [Pg.325]    [Pg.193]    [Pg.233]    [Pg.234]    [Pg.240]    [Pg.257]    [Pg.883]    [Pg.194]    [Pg.197]    [Pg.198]    [Pg.203]    [Pg.60]    [Pg.648]    [Pg.754]    [Pg.316]    [Pg.452]    [Pg.419]    [Pg.152]   
See also in sourсe #XX -- [ Pg.394 ]




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