The bromide content of underground waters. Part II. Observations on the chlorination of water containing free ammonia and naturally occurring bromide

✍ Scribed by Houghton, G. U.

• Publisher: Wiley (John Wiley & Sons)
• Year: 1946
• Weight: 552 KB
• Volume: 65
• Category: Article
• ISSN: 0368-4075
• DOI: 10.1002/jctb.5000651010

✦ Synopsis

I25

experiment four chalk well-waters of considerable ammonia coutent ivere chlorinnted in the laboratory for 70-80 ininutes and the rate of colour development with acid o-tolidine solution then observed wing a B.D.H.-Lovibond Nesslcriser. All the waters were of very high organic purity but wliilc samples (a), ( 6) and (c) were of modcriite to high bromide content, sample (d) contained very littlc bromide. The usual slow production of colour wns apparent in ((2) whereas in (a), (b) nnd (c) the colour intensity reached its moxiinuin in about 30-60 seconds. Espcrimcnts were also mitle using distilled water which had been buffered to pH 8.1 with 303 p.p.m. of sodium bicarbonate : these results (Tublc 11) iudicatcd that with 1.0 p p i .

TAULE II

Effect OJ bromide on a p e d of

colour dewlopinen1 is led Jor I' m,iduil chlorine *' by elaidarc1 o4olidine tnrllioi : okerualion, with ciiufilkd toiler ai pII 84 1 : chlorinctloa 0.5Op.p.tu. Aininouin dose0.30p.p.m Conladperiod 00 inintiles : leiiiperalarc 17' Addad broinido (ur) 1q.m. Nil 0.1 0.5 1.0 I5 BOC8.