Development of Sampling Method for Dioxins and Related Compounds in Water by Coagulant.

Seike, Nobuyasu; Yamashita, Masazumi; Ohuchi, Muneki; Miyamoto, Iori; Honda, Katsuya

doi:10.5985/jec.10.841

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…[1][2][3] Major extraction techniques currently used for the analysis of PCDD/F in aqueous samples, in particular, drinking water samples, are solid-phase extraction (SPE), liquid-liquid extraction (LLE), glass fiber filter (GFF) extraction and large volume filtration using polyurethane foam (PUF) plugs. [4][5][6][7][8][9][10] In terms of extraction time and solvent waste generated, conventional LLE is applicable only to small sample volume, often in the range of <1 to 10 L. 11 Thus, the use of LLE is suitable for wastewater matrices or cooling water from waste incinerators, which contain high concentrations of pollutants. The LLE has other disadvantages, such as formation of emulsions, which often decreases the accuracy and precision of analysis.…”

Section: Introductionmentioning

confidence: 99%

Simplification and validation of a large volume polyurethane foam sampler for the analysis of persistent hydrophobic compounds in drinking water

Choi¹,

Lee

Moon³

2008

J. Environ. Monit.

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The use of a large volume polyurethane foam (PUF) sampler was validated for rapid extraction of persistent organic pollutants (POPs), such as polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), in raw water and treated water from drinking water plants. To validate the recovery of target compounds in the sampling process, a (37)Cl-labeled standard was spiked into the 1st PUF plug prior to filtration. An accelerated solvent extraction method, as a pressurized liquid extractor (PLE), was optimized to extract the PUF plug. For sample preparation, tandem column chromatography (TCC) clean-up was used for rapid analysis. The recoveries of labeled compounds in the analytical method were 80-110% (n = 9). The optimized PUF-PLE-TCC method was applied in the analysis of raw water and treated potable water from seven drinking water plants in South Korea. The sample volume used was between 18 and 102 L for raw water at a flow rate of 0.4-2 L min(-1), 95 and 107 L for treated water at a flow rate of 1.5-2.2 L min(-1). Limit of quantitation (LOQ) was a function of sample volume and it decreased with increasing sample volume. The LOQ of PCDD/Fs in raw waters analyzed by this method was 3-11 times lower than that described using large-size disk-type solid phase extraction (SPE) method. The LOQ of PCDD/F congeners in raw water and treated water were 0.022-3.9 ng L(-1) and 0.018-0.74 ng L(-1), respectively. Octachlorinated dibenzo-p-dioxin (OCDD) was found in some raw water samples, while their concentrations were well below the tentative criterion set by the Japanese Environmental Ministry for drinking water. OCDD was below the LOQ in the treated drinking water.

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Section: Introductionmentioning

confidence: 99%

Simplification and validation of a large volume polyurethane foam sampler for the analysis of persistent hydrophobic compounds in drinking water

Choi¹,

Lee

Moon³

2008

J. Environ. Monit.

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Water-quality monitoring technique for dioxins during dredging using on-site solid phase extraction with graphitic carbon and analysis with DR-CALUX

Sato

Takigami

Hayakawa

et al. 2010

Journal of Environmental Science and Health, Part A

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In Japan, water-quality monitoring with the environmental dioxin standard of 1 pg-TEQ/L at basic monitoring points set in a border between operation-area water and normal water is necessary for removal operations for bottom sediments containing dioxins. This paper presents a technique for combining on-site graphitic carbon (GrC) solid-phase extraction and bioassay method for the simplification and facilitation of water-quality monitoring. Using this method, we conducted experiments at an actual sediment removal site. Comparative analyses using high-resolution GC/MS (HRGC-HRMS) between the dioxin concentrations detected using a GrC solid-phase extraction kit and the official analytical method yielded similar concentrations and distributions of isomers for detected PCDD/Fs and DL-PCBs. The GrC solid-phase extraction method is inferred to have capacity equal to official analytical method extraction. Toxicity equivalent concentrations estimated using DR-CALUX correlate with equivalent concentrations with HRGC/HRMS. No false positive or false negative result was obtained for the standard value 1 pg-TEQ/L.

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Development of Sampling Method for Dioxins and Related Compounds in Water by Coagulant.

Cited by 2 publications

References 3 publications

Simplification and validation of a large volume polyurethane foam sampler for the analysis of persistent hydrophobic compounds in drinking water

Simplification and validation of a large volume polyurethane foam sampler for the analysis of persistent hydrophobic compounds in drinking water

Water-quality monitoring technique for dioxins during dredging using on-site solid phase extraction with graphitic carbon and analysis with DR-CALUX

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