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Improved spectrophotometric method for the determination of low levels of bromide

✍ Scribed by David R. Jones

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
616 KB
Volume
271
Category
Article
ISSN
0003-2670

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✦ Synopsis

The addltlon of an excess of NH: has been found totally to suppress the competmg chlormatlon reactlons that ha{e caused problems in all prewously pubhshed applications of the chloramme-T-Phenol Red method for trace bromide analysis As a result of this, the dynamic range of the method has been extended four-fold (from 35 to 150 PM, 2 8 to 12 pg ml-' bronude) wthout sacrificing sensltwlty or precwon By addmg an lornc strength buffer (1 M NaNO,) and NH: (15 mM) to both cahbratlon and test samples the concentration of bromide can be accurately measured m solutions contammg up to 2 M chlonde

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