Determination of bromide ions in seawater by capillary zone electrophoresis using diluted artificial seawater as the buffer solution

Fukushi, Keiichi; Watanabe, Keisuke; Takeda, Sahori; Wakida, Shin‐ichi; Yamane, Masataka; Higashi, Kunishige; Hiiro, Kazuo

doi:10.1016/s0021-9673(97)01218-1

Cited by 44 publications

(25 citation statements)

References 11 publications

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“…These include, snow samples [126], river water [127], mineral water and beer [86], bore water [75], digested concrete [117], seawater [118], toothpaste [39], and vegetable extracts [87]. In many cases (using hydrodynamic injection), comparison of external and internal calibrations showed no significant matrix effects [39,87,118], although for high ionic strength samples it is recommended that peak areas be used rather than peak heights for calibration due to the destacking effect caused by the difference between the field strength of the sample and running buffer [118]. A good example of how unexplained matrix effects can occur is given by Harakuwe et al [117] who showed how in the analysis of concrete digests, the slope for internal (standard addition) calibration of chloride was greater than that obtained for external calibration, indicating a greater unit response for chloride in the real sample compared to standard solutions, meaning external calibration was not suitable for this particular sample.…”

Section: Standard Addition and Recoverymentioning

confidence: 99%

Quantitative capillary zone electrophoresis of inorganic anions

Paull

King

2003

Electrophoresis

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Despite the availability of commercial capillary electrophoresis systems for over ten years, where quantitative analysis is required, capillary zone electrophoresis (CZE) has often failed to replace ion chromatography as the method of choice for a large number of analytes, not least inorganic anions. To investigate the reasons for this apparent failing, a review is presented of work that has been carried out to-date involving the quantitative application of CZE to the determination of inorganic anions in industrial and environmental samples. This review summarizes work both investigating and improving the quantitative aspects of the CZE of inorganic anions. A complete survey of how CZE has been applied to the determination of inorganic anions in real samples is given, including what, if any, analytical performance parameters were investigated and quoted, and if quality assurance data and validation methods were briefly considered, thoroughly investigated or simply ignored.

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Section: Standard Addition and Recoverymentioning

confidence: 99%

Quantitative capillary zone electrophoresis of inorganic anions

Paull

King

2003

Electrophoresis

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“…The preparation of artificial seawater (pH 7.9) was based on a Japanese Standard [9] minus the bromide ion. The preparation procedure and the composition of the artificial seawater are described in our previous paper [7]. All solutions used in the present study were filtered through a 0.45 mm membrane filter before use.…”

Section: Reagentsmentioning

confidence: 99%

“…In a previous paper by our group [7], we used tenfolddiluted artificial seawater in which bromide ion was not contained as the carrier solution for the determination of bromide ion in seawater. The method was improved for the determination of nitrite and nitrate ions in seawater using nondiluted artificial seawater containing bromide ion [8].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of bromide, nitrite and nitrate ions in seawater by capillary zone electrophoresis using artificial seawater as the carrier solution

et al. 2000

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“…The sodium hypochlorite concentration is adjusted to 0.1 -0.3 mg/L as available chlorine at sewage treatment plant outlets. The treated water is often discharged to coastal seas, which contain high concentrations of bromide (39 -56 mg/L [4]). Consequently, there is the possibility of bromate formation in seawater.…”

Section: Introductionmentioning

confidence: 99%

Determination of bromate in highly saline samples using CZE with on‐line transient ITP

Fukushi

Yamazaki

Yamane

2009

J of Separation Science

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We developed CZE with direct UV detection for the determination of bromate in highly saline samples such as seawater and salts using transient ITP as an on-line concentration procedure. The following optimum conditions were established: BGE, artificial seawater containing no bromide adjusted to pH 3.0; detection wavelength, 210 nm; vacuum injection period of sample, 18 s (378 nL); terminating ion solution, 600 mM sodium acetate; vacuum injection period of the terminating ion solution, 7 s (147 nL) for seawater and 12 s (252 nL) for salts; applied voltage, 7 kV with the sample inlet side as the cathode. The LOD for bromate was 30 microg/L (BrO(3) (-)-Br) with S/N of 3. The respective values of the RSD of the peak area, peak height, and migration time for bromate were 6.4, 1.5, and 0.51%. Seawater and salt samples, with bromate added, were analyzed using this method. The recovery of bromate in seawater samples was 85-105%. Linear regression equations relating area and height responses to concentration for bromate were obtained using the salt samples.

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Determination of bromide ions in seawater by capillary zone electrophoresis using diluted artificial seawater as the buffer solution

Cited by 44 publications

References 11 publications

Quantitative capillary zone electrophoresis of inorganic anions

Quantitative capillary zone electrophoresis of inorganic anions

Simultaneous determination of bromide, nitrite and nitrate ions in seawater by capillary zone electrophoresis using artificial seawater as the carrier solution

Determination of bromate in highly saline samples using CZE with on‐line transient ITP

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