Determination of brominated alkylbenzenes in nickel industry sludge by capillary gas chromatography

TY - JOUR

T1 - Determination of brominated alkylbenzenes in nickel industry sludge by capillary gas chromatography

AU - Asp, T. N.

AU - Pedersen-Bjergaard, S.

AU - Greibrokk, T.

PY - 1997/10/18

Y1 - 1997/10/18

N2 - Capillary gas chromatography coupled to both mass spectrometry (GCMS) and atomic emission spectroscopy (GC-AED) was studied for the analysis of bromine-containing alkylbenzenes present in sludge from a nickel refinery. Owing to the high abundance of chlorinated compounds, location of the brominated species was difficult based on GC-MS with electron ionization. In contrast, GC-MS with negative chemical ionization (GC-NCIMS) and GC-AED enabled bromine-selective detection and were utilized for an effective location of the brominated compounds. Bromine-selective detection by GC-NCIMS relied on the monitoring of Br- (m/z 79/81) with CH4 as ionization gas, while atomic emission (827.2 nm) from a helium plasma was utilized in the case of GC-AED. While GC-NCIMS was 30-500 times more sensitive than GC-AED, the latter technique was superior for quantitative purposes. Because the bromine response of the AED was independent of molecular structure, quantification was possible without reference material.

AB - Capillary gas chromatography coupled to both mass spectrometry (GCMS) and atomic emission spectroscopy (GC-AED) was studied for the analysis of bromine-containing alkylbenzenes present in sludge from a nickel refinery. Owing to the high abundance of chlorinated compounds, location of the brominated species was difficult based on GC-MS with electron ionization. In contrast, GC-MS with negative chemical ionization (GC-NCIMS) and GC-AED enabled bromine-selective detection and were utilized for an effective location of the brominated compounds. Bromine-selective detection by GC-NCIMS relied on the monitoring of Br- (m/z 79/81) with CH4 as ionization gas, while atomic emission (827.2 nm) from a helium plasma was utilized in the case of GC-AED. While GC-NCIMS was 30-500 times more sensitive than GC-AED, the latter technique was superior for quantitative purposes. Because the bromine response of the AED was independent of molecular structure, quantification was possible without reference material.

KW - Atomic emission spectroscopy

KW - Brominated alkylbenzenes

KW - Gas chromatography

KW - Negative chemical ionization mass spectrometry

UR - http://www.scopus.com/inward/record.url?scp=0030850421&partnerID=8YFLogxK

U2 - 10.1007/BF02490879

DO - 10.1007/BF02490879

M3 - Journal article

AN - SCOPUS:0030850421

SN - 0009-5893

VL - 46

SP - 411

EP - 418

JO - Chromatographia

JF - Chromatographia

IS - 7-8

ER -