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char = e;code = 101
char = c;code = 99
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = s;code = 115
char = .;code = 46
result sql = Simultaneous determination of bromide and nitrate in contaminated waters by ion chromatography using amperometry and absorbance detectors.
Simultaneous determination of bromide and nitrate in contaminated waters by ion chromatography using amperometry and absorbance detectors.
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char = i;code = 105
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result sql = This study describes a new ion chromatography method using a low-capacity anion exchange column with amperometric and absorbance detection for rapid and simultaneous determination of Br(-) and NO(3)(-) in contaminated waters where one of these ions is present in excess compared to other. The use of two detectors overcomes the problem of baseline separation for Br(-) and NO(3)(-) for accurate quantification, which was commonly encountered when using a low-capacity anion exchange column and suppressed conductivity detection mode. The method achieved accurate quantification of these two ions without requirement of baseline separation. The accuracy of 2.8% for NO(3)(-) was determined using a quality control sample obtained from UN GEMS/Water PE Study No. 6. The detection limits for Br(-) and NO(3)(-) were 20 and 6 microg l(-1) (25 microl sample), respectively. Linearity of these two ions was over three orders of magnitude with a correlation coefficient >0.998. The influence of potential interfering ions was also studied followed by the determination of Br(-) and NO(3)(-) in seawater, unsaturated zone water, soil extract and groundwater.

Publication: Talanta 2008 Feb 15 ;74(5)::1428-34. :doi: 10.1016/j.talanta.2007.09.021.
Publication Date: 2008 Feb 15
Study Author(s): Tirumalesh, K;
Institution: Isotope Applications Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
Shortcut link to this study:
This study describes a new ion chromatography method using a low-capacity anion exchange column with amperometric and absorbance detection for rapid and simultaneous determination of Br(-) and NO(3)(-) in contaminated waters where one of these ions is present in excess compared to other. The use of two detectors overcomes the problem of baseline separation for Br(-) and NO(3)(-) for accurate quantification, which was commonly encountered when using a low-capacity anion exchange column and suppressed conductivity detection mode. The method achieved accurate quantification of these two ions without requirement of baseline separation. The accuracy of 2.8% for NO(3)(-) was determined using a quality control sample obtained from UN GEMS/Water PE Study No. 6. The detection limits for Br(-) and NO(3)(-) were 20 and 6 microg l(-1) (25 microl sample), respectively. Linearity of these two ions was over three orders of magnitude with a correlation coefficient >0.998. The influence of potential interfering ions was also studied followed by the determination of Br(-) and NO(3)(-) in seawater, unsaturated zone water, soil extract and groundwater.
PMID: 18371800

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