Determination of acetone in seawater using derivatization solid-phase microextraction

Hudson, E. D.; Okuda, Kadek; Ariya, Parisa A.

doi:10.1007/s00216-007-1324-x

Cited by 43 publications

(28 citation statements)

References 31 publications

(67 reference statements)

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“…The data do not show evident seasonal or spatial patterns that would warrant a more detailed treatment. We also note that the two studies that report the lowest bulk seawater acetone concentrations, Zhou and Mopper [1997] and Hudson et al [2007], rely on the smallest number of samples. By setting a fixed seawater concentration we assume implicitly that acetone in the ocean is controlled by internal sources and sinks, rather than by exchange with the atmosphere.…”

Section: Methodsmentioning

confidence: 86%

The role of the ocean in the global atmospheric budget of acetone

Fischer

Jacob

Millet

et al. 2012

Geophysical Research Letters

123

206

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[1] Acetone is one of the most abundant carbonyl compounds in the atmosphere and it plays an important role in atmospheric chemistry. The role of the ocean in the global atmospheric acetone budget is highly uncertain, with past studies reaching opposite conclusions as to whether the ocean is a source or sink. Here we use a global 3-D chemical transport model (GEOS-Chem) simulation of atmospheric acetone to evaluate the role of air-sea exchange in the global budget. Inclusion of updated (slower) photolysis loss in the model means that a large net ocean source is not needed to explain observed acetone in marine air. We find that a simulation with a fixed seawater acetone concentration of 15 nM based on observations can reproduce the observed global patterns of atmospheric concentrations and air-sea fluxes. The Northern Hemisphere oceans are a net sink for acetone while the tropical oceans are a net source. On a global scale the ocean is in near-equilibrium with the atmosphere. Prescribing an ocean concentration of acetone as a boundary condition in the model assumes that ocean concentrations are controlled by internal production and loss, rather than by air-sea exchange. An implication is that the ocean plays a major role in controlling atmospheric acetone. This hypothesis needs to be tested by better quantification of oceanic acetone sources and sinks.

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Section: Methodsmentioning

confidence: 86%

The role of the ocean in the global atmospheric budget of acetone

Fischer

Jacob

Millet

et al. 2012

Geophysical Research Letters

123

206

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“…Lowmolecular-weight organic compounds (LMWOCs) including ketones, aldehydes, and low-molecular-weight organic acids, are important metabolites of micro-organisms (Musa-Veloso et al, 2006). LMWOCs (Atkinson and Arey, 2003) are widely present in surface water (Hudson et al, 2007), soil (Jones et al, 2003), and the atmosphere (Poschl et al, 2001) and are potential methyl donors for mercury methylation. In the present study, the aqueous phase alkylation of inorganic mercury, Hg 2+ , by ketones, aldehydes and low-molecular-weight organic acids under UV irradiation was investigated.…”

Section: Introductionmentioning

confidence: 99%

Possible alkylation of inorganic Hg(II) by photochemical processes in the environment

et al. 2012

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a b s t r a c tThe methylation of inorganic Hg by anaerobic bacteria in aquatic environments is considered to be the major pathway for methylmercury (MeHg) production. However, recent research has suggested that abiotic or chemical methylation by humic substances and other low-molecular-weight organic compounds in natural environments is also possible. Here, the aqueous photo-transformation of Hg 2+ to organomercurials was investigated in the presence of ketones, aldehydes and low molecular weight organic acids under UV irradiation. MeHg and/or ethylmercury (EtHg) were identified as the main organomercurial products by multiple analytical techniques, including chromatography-atomic spectrometry and molecular mass spectrometry and further confirmed by stable isotope tracer experiments. The yield of organomercurials was markedly influenced by pH, NaCl concentration, alkylation donor concentration and the presence of chelating ligands in the aqueous solution. Electron paramagnetic resonance spectrometry demonstrated that the radical reaction was not the predominating alkylation pathway, although methyl radicals were detected in the photo-alkylation procedure. A mechanism based on intra-molecular alkyl transfer in the Hg 2+-low-molecular-weight organic compound complex is proposed. The present work helps us better understand of MeHg and EtHg photo-generation in natural environments.

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“…Among the existing derivatizing agents, pentafluorobenzaldehyde (PFBAY) is widely used for short-chain aliphatic amines, and the derivatizing reaction can proceed rapidly in aqueous solution at room temperature and provides very good yield. After derivatization, the formed derivatives required further extraction and concentration prior to GC analysis [24,25,27,68,106,[111][112][113][114][115][116][117][118][119][120]. Aliphatic amines derivatization with PFBAY to corresponding pentafluorobenzylimines ( Fig.…”

Section: Fluorescence/ultraviolet Derivatizationmentioning

confidence: 99%

“…HS-SPME technique is widely used for extracting various kinds of chemicals. Among them, in-vial (in situ) derivatization is frequently used for haloacetic acids (HAAs) [21,23] and acetic acid [67], aldehyde compounds [25,124,165], phenoxy acid herbicides [68], phenolic pollutants [17,18,82,91,159], aliphatic amines [120,125], acaricide fenbutatin oxide (FBTO) [131], acetone [111], selective serotonin reuptake inhibitors (SSRIs) such as venlafaxine, fluvoxamine, fluoxetine, citalopram, and sertraline [97], and organometallic compounds such as organotin [29,31,86,87,127,128,138,139,160], organolead [31,86,89,160], and organomercury [31,128,129,140,160]. On-fiber in situ derivatization is used for analyzing chemicals such as aldehyde compounds [27,105,164], carbonyls compounds [28], and thiol compounds [171].…”

Section: Watermentioning

confidence: 99%

See 1 more Smart Citation

Application of Solid-Phase Microextraction Combined with Derivatization for Polar Compound Sampling in Environmental Analysis

Yang¹,

Luan²

2016

Solid Phase Microextraction

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Solid-phase microextraction (SPME) is a solvent-free sample preparation technique using a fused-silica fiber coated with an appropriate stationary phase. Derivatization is often necessary to determine substances with poor chromatographic behavior, high reactivity, and/or volatility or thermal instability. SPME derivatization technique can be operated under different combined modes and may be influenced by factors such as sample matrix, SPME, derivatization, and desorption condition. Combined with derivatization, HS-SPME, DI-SPME, membrane-protected SPME, and in-tube SPME have been applied to the analysis of a vast amount of chemicals, i.e., aldehydes and acetone, amines, organic acids, phenolic compounds, pesticide, metal and organic metal species, and pharmaceutical and personal care products (PPCPs) in a wide range of environmental matrices, including air, water, soil, and sediment samples. This chapter reviews the mode and method development of the derivatization technique, the derivatization reagents, and reaction mechanism, as well as its applications in environmental analysis.

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Determination of acetone in seawater using derivatization solid-phase microextraction

Cited by 43 publications

References 31 publications

The role of the ocean in the global atmospheric budget of acetone

The role of the ocean in the global atmospheric budget of acetone

Possible alkylation of inorganic Hg(II) by photochemical processes in the environment

Application of Solid-Phase Microextraction Combined with Derivatization for Polar Compound Sampling in Environmental Analysis

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