title: Chemical fingerprinting of naphthenic acids and oil sands process waters-A review of analytical methods for environmental samples.
abstract: This article provides a review of the routine methods currently utilized for total naphthenic acid analyses. There is a growing need to develop chemical methods that can selectively distinguish compounds found within industrially derived oil sands process affected waters (OSPW) from those derived from the natural weathering of oil sands deposits. Attention is thus given to the characterization of other OSPW components such as oil sands polar organic compounds, PAHs, and heavy metals along with characterization of chemical additives such as polyacrylamide polymers and trace levels of boron species. Environmental samples discussed cover the following matrices: OSPW containments, on-lease interceptor well systems, on- and off-lease groundwater, and river and lake surface waters. There are diverse ranges of methods available for analyses of total naphthenic acids. However, there is a need for inter-laboratory studies to compare their accuracy and precision for routine analyses. Recent advances in high- and medium-resolution mass spectrometry, concomitant with comprehensive mass spectrometry techniques following multi-dimensional chromatography or ion-mobility separations, have allowed for the speciation of monocarboxylic naphthenic acids along with a wide range of other species including humics. The distributions of oil sands polar organic compounds, particularly the sulphur containing species (i.e., OxS and OxS2) may allow for distinguishing sources of OSPW. The ratios of oxygen- (i.e., Ox) and nitrogen-containing species (i.e., NOx, and N2Ox) are useful for differentiating organic components derived from OSPW from natural components found within receiving waters. Synchronous fluorescence spectroscopy also provides a powerful screening technique capable of quickly detecting the presence of aromatic organic acids contained within oil sands naphthenic acid mixtures. Synchronous fluorescence spectroscopy provides diagnostic profiles for OSPW and potentially impacted groundwater that can be compared against reference groundwater and surface water samples. Novel applications of X-ray absorption near edge spectroscopy (XANES) are emerging for speciation of sulphur-containing species (both organic and inorganic components) as well as industrially derived boron-containing species. There is strong potential for an environmental forensics application of XANES for chemical fingerprinting of weathered sulphur-containing species and industrial additives in OSPW.
authors: Water Science & Technology Directorate, Environment Canada, Saskatoon, Saskatchewan, Canada. John.Headley@ec.gc.ca
authors: J V
authors: JV
authors: Headley
authors: K M
authors: KM
authors: Peru
authors: M H
authors: MH
authors: Mohamed
authors: R A
authors: RA
authors: Frank
authors: J W
authors: JW
authors: Martin
authors: R R O
authors: RR
authors: Hazewinkel
authors: D
authors: D
authors: Humphries
authors: N P
authors: NP
authors: Gurprasad
authors: L M
authors: LM
authors: Hewitt
authors: D C G
authors: DC
authors: Muir
authors: D
authors: D
authors: Lindeman
authors: R
authors: R
authors: Strub
authors: R F
authors: RF
authors: Young
authors: D M
authors: DM
authors: Grewer
authors: R M
authors: RM
authors: Whittal
authors: P M
authors: PM
authors: Fedorak
authors: D A
authors: DA
authors: Birkholz
authors: R
authors: R
authors: Hindle
authors: R
authors: R
authors: Reisdorph
authors: X
authors: X
authors: Wang
authors: K L
authors: KL
authors: Kasperski
authors: C
authors: C
authors: Hamilton
authors: M
authors: M
authors: Woudneh
authors: G
authors: G
authors: Wang
authors: B
authors: B
authors: Loescher
authors: A
authors: A
authors: Farwell
authors: D G
authors: DG
authors: Dixon
authors: M
authors: M
authors: Ross
authors: A Dos Santos
authors: Ados S
authors: Pereira
authors: E
authors: E
authors: King
authors: M P
authors: MP
authors: Barrow
authors: B
authors: B
authors: Fahlman
authors: J
authors: J
authors: Bailey
authors: D W
authors: DW
authors: McMartin
authors: C H
authors: CH
authors: Borchers
authors: C H
authors: CH
authors: Ryan
authors: N S
authors: NS
authors: Toor
authors: H M
authors: HM
authors: Gillis
authors: L
authors: L
authors: Zuin
authors: G
authors: G
authors: Bickerton
authors: M
authors: M
authors: Mcmaster
authors: E
authors: E
authors: Sverko
authors: D
authors: D
authors: Shang
authors: L D
authors: LD
authors: Wilson
authors: F J
authors: FJ
authors: Wrona
mesh_terms: D002264:Carboxylic Acids / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D013058:Mass Spectrometry; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D002264:Carboxylic Acids; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; C046170:naphthenic acid