Direct compleximetric titration of indium, thallium and thorium with EDTA using iron-N-benzoyl-N-phenylhydroxylamine as indicator

✍ Scribed by H.R. Das; S.C. Shome

• Publisher: Elsevier Science
• Year: 1968
• Tongue: English
• Weight: 245 KB
• Volume: 43
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(00)89191-6

✦ Synopsis

P~ecisiorr. An estimate of the precision of this method was ascertained from the results of II samples, each containing 2.17 p.p.m. of vanadium. These samples gave a mean absorbance value of 0.468 at 323 nm. The standard deviation was 0.003 absorbance unit, or a relative standard deviation of 0.64(%,. In a series of determinations, about rg min is rcquircd for each determination. I 15. 13. SANDRLI,, Cotoriwrclric Ihde!rnlirrcrtiou c~j~l'racescljIl;lelrrls, 3rd Edn., Intcrscicncc, h'cw York, 1959, 1'. 920-934. 1 f-1. 1-I. \'lI,I.AR~ AND 1'. YOIJSC, f,ld. E71&?. ChWl., ./l,lU!. Ed.. 20 (1928) 764. :) 15. I<. WHICIIIT hrc'n 31. C;. Mr:x.~_oN. Ilrd. EPIC. Chew., 21 rutl. Ed., 5, (1937) 25 1. '1 I'. SLI\vlIc, Clrmrihr %tg., 3.1 (x910) 648. 5 If. I<. WIIIGIIT ANI) 31. c;. hIl:I.LON, Ilad. fitl&'. ~:hC7ll., .'t Ud. 1:d.I 3 (1937) 375. (i G. 'htl~l~ AND 1). 1'. ISOLTZ. .dtZfll. ~/l~~iZ., 23 (1352) 901. 7 %. GImGOI~WIC%, %. /I 7rul. C/lC7U., 175 (1gGo) 168. 8 C. L~ot~c,~wr AND C. V,\ND~EI,, I'rhl. .4ssoc. I ~rgvs. f"Nc. rolyfcck. Mo,rs, 3 (195s) 23. !, 1;. 13. SANDI~LL, Id. fhg. Cker71., .4 ILUI. Ed.. 8 (193(J) 336. IO M. D. COOPER AND 1'. I<. WINTER, .47rrrl. Clwtr., 21 (15),15)) Clog. I I c. c. kiOPPS AND pi. r. l%mK, .*f?lUf.