Determination of inorganic anions in oilfield water using capillary electrophoresis with indirect fluorescence detection

被引：0
作者：
Pei, Lei [1 ]
Schmidt, Kenneth J. [2 ]
Crabtree, H. John [3 ]
Lucy, Charles A. [1 ]
机构：
[1] Univ Alberta, Dept Chem, Gunning Lemieux Chem Ctr, Edmonton, AB T6G 2G2, Canada
[2] Wilson Analyt, Sherwood Pk, AB T8H 2C1, Canada
[3] HJC Consulting Inc, Edmonton, AB T6H 1B3, Canada
来源：
ANALYTICAL METHODS | 2015年 / 7卷 / 20期
关键词：
LASER-INDUCED FLUORESCENCE; CONTACTLESS CONDUCTIVITY DETECTION; LIGHT-EMITTING-DIODES; INDIRECT PHOTOMETRIC DETECTION; IMPROVISED EXPLOSIVE DEVICES; ZONE-ELECTROPHORESIS; ION CHROMATOGRAPHY; TRACE ANIONS; CE; SULFATE;
D O I：
10.1039/c5ay01394a
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Analysis of high salinity oilfield water for anions presents challenges. Here we develop a capillary electrophoresis method using indirect fluorescence detection for simultaneous separation and determination of bromide, chloride, nitrate and sulfate. 8-Hydroxypyrene-1,3,6-trisulfonic acid (HPTS) is used as the fluorescent probe in the background electrolyte. High resolution (8.5) between chloride and sulfate is achieved using an acidic BGE (pH 2.0) under reversed polarity. This method is capable of detecting trace anions in high chloride samples (5 ppm Br- in 30 ppm Cl-, 1 ppm NO3- in 400 ppm Cl-, 1.5 ppm SO42- in 1500 ppm CELL Linear calibration (R-2 > 0.99) was achieved for sulfate over the range 1-20 ppm in 500 ppm chloride. Limits of detection (LOD) were 0.4 ppm for sulfate and 1.4 ppm for chloride. This method was applied to the determination of chloride and sulfate in high salinity oilfield water samples, with 9% RSD for chloride and 84% spike recovery for sulfate.
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收藏
页码：8689 / 8696
页数：8
相关论文
共 90 条
  • [1] Agilent, 2013, EV SYST SUIT CE GC L
  • [2] Overview of the status and applications of capillary electrophoresis to the analysis of small molecules
    Altria, KD
    Elder, D
    [J]. JOURNAL OF CHROMATOGRAPHY A, 2004, 1023 (01) : 1 - 14
  • [3] [Anonymous], 1979, INTRO OILFIELD WATER
  • [4] Identification of Inorganic Improvised Explosive Devices Using Sequential Injection Capillary Electrophoresis and Contactless Conductivity Detection
    Blanco, Gustavo A.
    Nai, Yi H.
    Hilder, Emily F.
    Shellie, Robert A.
    Dicinoski, Greg W.
    Haddad, Paul R.
    Breadmore, Michael C.
    [J]. ANALYTICAL CHEMISTRY, 2011, 83 (23) : 9068 - 9075
  • [5] Analytical devices based on light-emitting diodes - a review of the state-of-the-art
    Bui, Duy Anh
    Hauser, Peter C.
    [J]. ANALYTICA CHIMICA ACTA, 2015, 853 : 46 - 58
  • [6] EFFECTS OF MAJOR IONS ON THE DETERMINATION OF TRACE IONS BY ION CHROMATOGRAPHY
    BYNUM, MAO
    TYREE, SY
    WEISER, WE
    [J]. ANALYTICAL CHEMISTRY, 1981, 53 (12) : 1935 - 1936
  • [7] Crompton T. R., 2006, ANAL OF SEAWATER, P39, DOI [10.1007/3-540-26763-8_2., DOI 10.1007/3-540-26763-8_2]
  • [8] ION CHROMATOGRAPHY - THE STATE-OF-THE-ART
    DASGUPTA, PK
    [J]. ANALYTICAL CHEMISTRY, 1992, 64 (15) : A775 - A783
  • [9] Sulfur speciation by capillary zone electrophoresis determination of dithionite and its decomposition products sulfite, sulfate and thiosulfate in commercial bleaching agents
    de Carvalho, LM
    Schwedt, G
    [J]. JOURNAL OF CHROMATOGRAPHY A, 2005, 1099 (1-2) : 185 - 190
  • [10] Spectral filtering of light-emitting diodes for fluorescence detection
    de Jong, EP
    Lucy, CA
    [J]. ANALYTICA CHIMICA ACTA, 2005, 546 (01) : 37 - 45
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