Comprehensive Analytical Method for Semi-volatile Organic Compounds in Water Samples by Combination of Disk-type Solid-phase Extraction and Gas Chromatography-Mass Spectrometry Database System

Jinya, Daisuke; Iwamura, Tomomi; Kadokami, Kiwao

doi:10.2116/analsci.29.483

Cited by 13 publications

(7 citation statements)

References 13 publications

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“…For instance, the 22 chemicals sampled by the C18FF disk appeared more lipophilic than those sampled by the SXB-XC disk, although the variation in the data is such that there is no statistical difference between the two disks (C18FF average logK ow of retained chemicals 4.0, range 1.4-9.7; SDB-XC average logK ow 2.7, range −0.07-6.1). The detection of a wide range of chemicals with radically different polarities using the two different receiving phases is consistent with Jinya et al (2013), who reported that the number and concentrations of chemicals observed after extraction of water samples using an Empore™ SDB-XD disk were almost identical to those obtained from the same samples using a cartridge-type SPE method and a liquid-liquid extraction method; in that case, the log Kow values of the detected pollutants ranged from −0.07 (caffeine) to 14.6 (squalene).…”

Section: Resultssupporting

confidence: 73%

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Combining Passive Sampling with a GC-MS-Database Screening Tool to Assess Trace Organic Contamination of Rivers: a Pilot Study in Melbourne, Australia

Allinson

Kadokami

2015

Water Air Soil Pollut

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This study assessed the suitability of passive sampler extracts for use with a GC-MS-database rapid screening technique for around 940 organic chemicals. Chemcatcher™ passive sampler systems containing either Empore™ SDB-XC or C18FF disks were deployed at 21 riverine sites in and near Melbourne, Victoria, Australia, for a period of 28 days during SeptemberOctober 2008. Methanolic elution of the SDB-XC and C18FF disks produced an extract that, after evaporation and inversion into hexane, was compatible with the GC-MS-database method enabling over 30 chemicals to be observed. The sources of the non-agricultural chemicals are still unclear, but this study was conducted in a relatively dry season where total rainfall was approximately 40 % lower than the long-term mean for the catchment during the study period.

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Section: Resultssupporting

confidence: 73%

“…Identification and quantification of the 940 or so semi-volatile compounds were finally performed by AIQS-DB. For full details of the extraction method and chemical determination, see Kadokami et al (2005Kadokami et al ( , 2009) and Jinya et al (2013).…”

Section: Passive Samplingmentioning

confidence: 99%

Combining Passive Sampling with a GC-MS-Database Screening Tool to Assess Trace Organic Contamination of Rivers: a Pilot Study in Melbourne, Australia

Allinson

Kadokami

2015

Water Air Soil Pollut

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“…Such performance characteristics will be very useful for finding substances posing high risk to human and aquatic organisms, finding causes of environmental incidents, and confirming environmental safety after disasters and accidents. In addition, the combination with two comprehensive methods using LC-QTOF-MS and GC-MS we can obtain a more complete pollution picture of the environment …”

Section: Discussionmentioning

confidence: 99%

“…We developed highly efficient simultaneous analytical methods for ca. 1000 semivolatile organic chemicals (SVOCs) by gas chromatography-mass spectrometry (GC-MS) . Many OMPs, however, have limited volatility and are thermally decomposable substances and so are difficult to measure by GC-MS.…”

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confidence: 99%

Comprehensive Target Analysis for 484 Organic Micropollutants in Environmental Waters by the Combination of Tandem Solid-Phase Extraction and Quadrupole Time-of-Flight Mass Spectrometry with Sequential Window Acquisition of All Theoretical Fragment-Ion Spectra Acquisition

Kadokami

Ueno

2019

Anal. Chem.

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There are many thousands of chemicals in use for a wide range of purposes, and highly efficient analytical methods are required to monitor them for protection of the environment. In order to cope with this difficult task we developed a novel, comprehensive method for 484 substances in water samples. In this method target chemicals were extracted by tandem SPE and then determined by LC-QTOF-MS-SWATH. Targets were unambiguously identified using retention times, accurate masses of a precursor and two product ions, their ion ratios, and accurate MS/MS spectrum. Quantitation was achieved by the internal standard method using a precursor ion. Results of recovery tests at two concentrations (50 and 500 ng L–1) showed average recoveries of 87.5% and 87.0% (RSD, 9.1% and 9.4%), respectively. Limits of detection of one-half of the targets were below 1.0 ng L–1. The method was applied to the influent and effluent of a sewage treatment plant, and around 100 chemicals were detected. Results of examination on matrix effects using their extracts spiked with 209 pesticides showed that the ratios of detected amounts between the extracts and the standard solution were 89.8% (influent) and 91.7% (effluent), respectively. In addition, investigation on the stability of calibration curves by injecting the same standards for 1 year showed that their quantitative results did not change; average accuracy was 103.3% (RSD, 10.0%), indicating that the calibration curves can be used for an extended period of time without calibration, and quantitative retrospective analysis can be done after creating calibration curves for new targets.

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“…Its application covers micropollutants, illicit drugs, etc. [1][2][3]7,8) e precision, or rather the uncertainty of measurements, is the major unifying principle of the quality of data. [9][10][11] e procedure to judge the quality such as suitability and capability of analysis is known as validation.…”

Section: Introductionmentioning

confidence: 99%

Determination of Detection Limits and Quantitation Limits for Compounds in a Database of GC/MS by FUMI Theory

Nakashima

Hayashi

2016

Mass Spectrometry

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e aim of this paper is to propose a stochastic method for estimating the detection limits (DLs) and quantitation limits (QLs) of compounds registered in a database of a GC/MS system and prove its validity with experiments. e approach described in ISO 11843 Part 7 is adopted here as an estimation means of DL and QL, and the deca uorotriphenylphosphine (DFTPP) tuning and retention time locking are carried out for adjusting the system. Coupled with the data obtained from the system adjustment experiments, the information (noise and signal of chromatograms and calibration curves) stored in the database is used for the stochastic estimation, dispensing with the repetition measurements. Of sixty-six pesticides, the DL values obtained by the ISO method were compared with those from the statistical approach and the correlation between them was observed to be excellent with the correlation coe cient of 0.865. e accuracy of the method proposed was also examined and concluded to be satisfactory as well. e samples used are commercial products of pesticides mixtures and the uncertainty from sample preparation processes is not taken into account.

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Comprehensive Analytical Method for Semi-volatile Organic Compounds in Water Samples by Combination of Disk-type Solid-phase Extraction and Gas Chromatography-Mass Spectrometry Database System

Cited by 13 publications

References 13 publications

Combining Passive Sampling with a GC-MS-Database Screening Tool to Assess Trace Organic Contamination of Rivers: a Pilot Study in Melbourne, Australia

Combining Passive Sampling with a GC-MS-Database Screening Tool to Assess Trace Organic Contamination of Rivers: a Pilot Study in Melbourne, Australia

Comprehensive Target Analysis for 484 Organic Micropollutants in Environmental Waters by the Combination of Tandem Solid-Phase Extraction and Quadrupole Time-of-Flight Mass Spectrometry with Sequential Window Acquisition of All Theoretical Fragment-Ion Spectra Acquisition

Determination of Detection Limits and Quantitation Limits for Compounds in a Database of GC/MS by FUMI Theory

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