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Rapid determination of thorium in ores : Separation as iodate in presence of oxalic acid

โœ Scribed by Mahadeo M. Tillu; V.T. Athavale

Publisher
Elsevier Science
Year
1954
Tongue
English
Weight
398 KB
Volume
11
Category
Article
ISSN
0003-2670

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๐Ÿ“œ SIMILAR VOLUMES

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oxalic acid solution. 1-Jyclroycn pcroxidc: 10 ml of 3ov/" I.1202 tlilntctl to 100 trill with ctistillccl water, J\_,nntl~anum nitrate: To contain 1 xnl = 1 sng La203 in tlilntc l-IX0 :I. kfyciroftnoric acid wrstr solution: 5 ml of &IF diluted to 100 ml with ilistillcd water. Ikdssiiln~ iotlatc rcng

Spectrophotometric determination of oxal
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Glyoxyhc acid gives a yellow 1:l complex, [Fe-CHOC00]2+ with iron(II1). The dissociation constant, measured by two spectrophotometric methods, is K = 9.7 + 1 mol 1-l. Oxalic acid gives two complexes with iron(II1) which absorb in the same range around 400 nm. With appropriate precautions and correct