The acidity of bread containing calcium carbonate

✍ Scribed by Halton, P.

• Publisher: Wiley (John Wiley & Sons)
• Year: 1942
• Weight: 395 KB
• Volume: 61
• Category: Article
• ISSN: 0368-4075
• DOI: 10.1002/jctb.5000610503

✦ Synopsis

spectral lines used in this work liiivo been chosen because ( 0 ) tlicy nre of suitnlile density, (t) tlicy nrc not ntnskctl by or cottfnsed wit11 lines tlite to trnces of otlier nietnls (for csnmple h'cotioitt ic tispce/.s In coinparison with the usunl colorimetric nicthotls, tlte spcctrographic mcthod offers corisidcrnblc cconotnies, both in cost of rengents nnd in ninn po~ver. It is estitnntcd thnt whett npplicd on '' ninss production littes " tlie orernll cost per sninple is npprosiinntcly om fifth of that of tltc coloriinetric method, so thnt tlie initinl cnpititl cost of the instruiiient can soon 1)c rccovcrctl. Of inore importnnce in present circinnstnnces is the fnct thnt only one quarter to one tl.irtl of tlie ninti power is regnired.

\'e desire to express our tlinnks to Iniperinl Cheitiicnl Itidustries Ltd. for pcrmicsiowto piildidt this coniinnnicntion.

Rcst~nrclt Ihpnrtmetit, Annlyticnl Section, 1.V.I. (Dyestuffs) Lttl., 13lnckley, Jlnnciicst er TI1 replying to points riiised in the tlisccissiort, n r . Hiirper pointed out thnt foodstuff colours niid niediciniils iirc usuidly fiircly clivitled powders which do not give rise to snniplin~ errors on rlte I-g. scnle.

The method lint1 iieen apccificnlly tlcsigiiect for " ii1:t.w prorluctioii " TABLE I1 Ita11aUlt8 bg apcclroyraplic and colorimclric tfrcflofld. Direct sprctrographic fed 011 aidphitirajrois 1 g. o j s t ~~~~p l c Spcctrogrnphic riictlioil Colorimctric method rlrscnio Lend (:oppcr Arscnic' Lend Co!pr As,O, p.p.lu. I'b, p.p.ni. cu, ~I . 1 l . m .