Distribution, sources, and stability of haloacetic acids in Tokyo Bay, Japan

Hashimoto, Shinichi; Azuma, Tadashi; Otsuki, Akira

doi:10.1002/etc.5620170506

Cited by 41 publications

(11 citation statements)

References 34 publications

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“…The estrogenic activity of river water samples collected on the Chiba Prefecture side of Tokyo Bay (<1.76 ng/L, Yoro and Obitsu rivers; Figure 3) was lower than that of the river water collected on the Tokyo and Kanagawa Prefecture sides of the Bay (about 1.48-4.01 ng/L in the crowded Edogawa, Arakawa, Sumida, and Tamagawa river areas; Figure 3). Low estrogenic activities were observed at some stations with little input of sewage water (stations 52-55; Hashimoto et al 1998a). The E 2 equivalents of seawater samples were higher on the Tokyo and Kanagawa Prefecture side of the Bay than on the Chiba Prefecture side (p < 0.05, ANOVA, Figure 3).…”

Section: Estrogenic Activity Of Water Samplesmentioning

confidence: 94%

Horizontal and Vertical Distribution of Estrogenic Activities in Sediments and Waters from Tokyo Bay, Japan

Hashimoto

Horiuchi²,

Yoshimoto

et al. 2005

Arch Environ Contam Toxicol

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Abstract. Endocrine-disrupting chemicals with estrogenic activity (e.g., alkylphenols) have been detected in coastal Japan. We aimed to determine estrogenic activity in extracts of river water, seawater, sediments, and sediment cores from Tokyo Bay by in vitro gene expression assay. Fifty-one of 57 extracts had some estrogenic activity. E 2 equivalents (ng E 2 equivalents per gram dry weight or per liter above the limit of detection) in river water samples ranged from 0.70 to 4.01 ng/ L; in seawater samples from 0.34 to 2.52 ng/L; and in surface sediments from 2.07 to 12

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Section: Estrogenic Activity Of Water Samplesmentioning

confidence: 94%

Horizontal and Vertical Distribution of Estrogenic Activities in Sediments and Waters from Tokyo Bay, Japan

Hashimoto

Horiuchi²,

Yoshimoto

et al. 2005

Arch Environ Contam Toxicol

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“…The pollutant has been found in rainwater (Reimann et al 1996;Ro¨mpp et al 2001), surface waters (Hashimoto et al 1998;Scott et al 2000Scott et al , 2002, drinking water (Pervova et al 2002) and in snow (von Sydow et al 1999). Typical concentrations of MCA in the aquatic systems have not exceeded lg/liter but in treated wastewaters levels of mg/l have been found (McRae et al 2004).…”

Section: Introductionmentioning

confidence: 95%

“…Chloroacetic acid has relatively long lifetime in natural environment (Ellis et al 2001) which may result from its resistance to photodegradation (Lifongo et al 2004). On the other hand, spontaneous microbial dehalogenation of MCA in surface waters has been reported (Hashimoto et al 1998;Ellis et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of monochloroacetic acid used as a sole carbon and energy source by Xanthobacter autotrophicus GJ10 strain in batch and continuous culture

Torz

Beschkov

2005

Biodegradation

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Batch and continuous mode degradation of monochloroacetic acid used as a sole carbon and energy source in the concentration range of 0.9-48.4 mM by pure culture of Xanthobacter autotrophicus GJ10 was investigated. The substrate was completely degraded in each flask in batch system. Partial substrate inhibition occurred at the concentrations exceeding 25.4 mM. Temporary accumulation of glycolic acid in the medium indicated that dehalogenation was undergoing faster than further utilization of glycolate. Three different carbon substrates were used for inoculum preparation--1,2-dichloroethane, tri-sodium citrate and a nutrient broth. The fastest growth on monochloroacetate occurred for 1,2-dichloroethane-grown inoculum. The assays of haloacid dehalogenase in crude extract indicated that the bacteria grown on 1,2-dichloroethane possessed higher level of the enzyme. The response of the GJ10 culture towards spikes of 20 mM monochloroacetate was tested in 2.5-1 continuously stirred tank fermentor. The substrate was readily utilized within 7-8 h. Continuous degradation of monochloroacetate in the fermentor was demonstrated for monochloroacetate concentration of 20 mM and dilution rate 0.016 h(-1). Quantitative agreement between the amount of monochloroacetate introduced and chloride released was found. The results demonstrated that the strain X. autotrophicus GJ10 might be suitable for biodegradation of monochloroacetate contaminated media.

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“…High TCA values, up to 7600 µg L − , have been found in bleaching plant wastewater (Yu and Welander, 1994). Data on TCA concentrations in surface waters, however, showed a wide span between <0.03 µg L −1 and 4.1 µg L −1 (Hashimoto et al, 1998).…”

Section: Introductionmentioning

confidence: 96%

Geochemical Transformation of Trichloroacetic Acid to Chloroform in Fresh Waters – The Results Based Upon Laboratory Experiments

Xiang

Jing

Zhang

et al. 2005

Water Air Soil Pollut

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In order to explore the geochemical transformation of trichloroacetic acid to chloroform in fresh waters, an experimental study by using laboratory microcosms was performed. The study confirmed the abiotic transformation of TCA to chloroform with various rate constants, ranging from approx. 3.29×10 −4 day −1 to 4.41×10 −4 day −1 , in different fresh waters at 25±1 • C. Also, an induction period (5-6 days) was observed before apparent degradation of TCA. Of the four geochemical factors including pH, oxygen, humic substances and ferric ion, the influence of lake HA, extracted from East Lake, on the transformation has been proven to be more substantial. Several model substances of HA, such as acetic acid, citric acid and β-Resorcylic acid etc., were also found to promote chloroform formation. Whilst, the results of pH effect experiments showed that higher yields of chloroform released from TCA solution occurred in the intensified alkaline media (pH = 10), an unusual condition in environment, indicating the limited effect of pH on the transformation under prevailing conditions in natural waters. According to our study, a mathematic model was built and successfully used to simulate TCA transformation to chloroform in fresh waters. Mathematic simulation demonstrates that the rates of decay for chloroform formation, after induction time, are mainly owing to rapid TCA degradation. In addition, biotic experiments indicated that fresh water algae affect TCA transformation to chloroform in varying degrees. The blue alga Anabaena cylindrica remarkably promoted chloroform formation, in weak acid media (pH = 6.5). While, the green alga Chlorella vulgari seems to indistinctively affect chloroform formation, whether in alkaline or weak acidic media. Enzyme or other byproducts of alga, such as citric acid, might play roles in the TCA transformation.

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Distribution, sources, and stability of haloacetic acids in Tokyo Bay, Japan

Cited by 41 publications

References 34 publications

Horizontal and Vertical Distribution of Estrogenic Activities in Sediments and Waters from Tokyo Bay, Japan

Horizontal and Vertical Distribution of Estrogenic Activities in Sediments and Waters from Tokyo Bay, Japan

Biodegradation of monochloroacetic acid used as a sole carbon and energy source by Xanthobacter autotrophicus GJ10 strain in batch and continuous culture

Geochemical Transformation of Trichloroacetic Acid to Chloroform in Fresh Waters – The Results Based Upon Laboratory Experiments

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