The Assessment of Bioaccumulation

Beek, Bernd; Böhling, Stella; Bruckmann, Ursula; Franke, Christian; Jöhncke, Ulrich; Studinger, Gabriele

doi:10.1007/10503050_4

Cited by 20 publications

(26 citation statements)

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“…The xenobiotics may have bioaccumulating properties when applied to crops through irrigation (Korte et al, 2000;Marty, 1999) or exert toxic effects on the same plants, bacteria and algae (Levine and Asano, 2004;Singh et al, 2004;Dizer et al, 2002;Ono et al, 1996) and may end up in humans through food ingestion (Beek et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Photodegradation of naproxen and its photoproducts in aqueous solution at 254 nm: A kinetic investigation

et al. 2013

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Section: Introductionmentioning

confidence: 99%

Photodegradation of naproxen and its photoproducts in aqueous solution at 254 nm: A kinetic investigation

et al. 2013

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“…The uptake of the congeners BDE 153 and BDE 154, and congeners BDE 197 to BDE 209 did not reach a steady-state plateau within the exposure period of 28 days. As the absence of a steady state apparently leads to an underestimation of the bioaccumulation potential of the substances, 29 the kinetic bioaccumulation factor (BAF K ) was calculated.…”

Section: Resultsmentioning

confidence: 99%

Bioaccumulation of Polybrominated Diphenyl Ethers by Tubifex Tubifex

Kolar¹,

Arnuš²,

Križanec³

et al. 2016

ACSi

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The selective uptake of polybrominated diphenyl ethers (PBDEs) by oligochaetes makes it possible to assess the bioaccumulation of individual congeners in commercial mixtures. Twenty-one congeners from three BDE commercial mixtures (TBDE-71, TBDE-79 and TBDE-83R) and as individual congeners were tested on Tubifex tubifex in accordance with the OECD TG 315 "Bioaccumulation in Sediment-Dwelling Benthic Oligochaetes". All the congeners that were spiked in the sediment were detected at the end of the uptake phase and at the end of the experiment. The bioaccumulation factor (BAF), the kinetic bioaccumulation factor (BAF K ) and the biotasediment accumulation factor (BSAF) were calculated, and indicate a high bioaccumulation potential for tri-to hexaBDEs and a lower bioaccumulation potential for hepta-to deca-BDEs. The penta-homologues BDE-99 and BDE-100 showed the highest BSAFs of 4.84 and 5.85 (BAFs of 7.34 and 9.01), while the nona-and deca-BDEs exhibit bioaccumulation in up to one-order-lower concentrations. The change in the bioaccumulation potential between the group of trito hexa-BDEs and hepta-to deca-BDEs correlated with the generally accepted molecular-mass threshold for the molecular transition through biological membranes (700 g/mol).

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“…In addition, around 50% of the planted forest area uses spot weed control which would substantially reduce the load of active ingredient applied to the site (Rolando et al, 2013). Power and McCarthy (1997) and others (Beek et al, 2000;Shepard et al, 2004) have highlighted the issue of extrapolating laboratory results to the field. Of concern is the limited number of aquatic organisms and indigenous organisms used in laboratory testing.…”

Section: Biological Significancementioning

confidence: 99%

“…When using the octanol/water partition co-efficient (log Kow) to assess bioaccumulative risk, a (log Kow), of ≥ 3 is a common international trigger point for concern and terbuthylazine exceeds this limit (Table 1). In contrast, when using the bioaccumu-119 lation factor (BCF: the ratio of the concentration of a chemical in an organism compared with that in water), a BCF of < 100 is considered a low risk (Beek et al, 2000) and terbuthylazine is below this limit (Table 1). These guidelines, give contradictory assessments on the potential risk of terbuthylazine bioaccumulating in freshwater environments (Table 1).…”

Section: Introductionmentioning

confidence: 99%

Aquatic Fate of Aerially Applied Hexazinone and Terbuthylazine in a New Zealand Planted Forest

Baillie¹,

Neary²,

Gous³

et al. 2017

JSWSM

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Herbicides are used to control competing vegetation during tree establishment, and are often critical to the productivity and economic viability of a planted forest crop. Despite increasing public concern over herbicide use in planted forests and potential impact on the environment, there is limited information on the aquatic fate of many of these herbicides when applied in forests according to standard operational procedures. Two herbicides commonly used in New Zealand’s planted forests, terbuthylazine and hexazinone, were aerially applied during two consecutive years at 7.4 kg and 1.1 kg ha-1 respectively, to a 12.5 ha catchment of newly planted Pinus radiata (Radiata pine) in the Bay of Plenty region of New Zealand. One hundred percent of the area was sprayed during Year 1 while 85% of the area was sprayed during Year 2. The highest concentrations of both herbicides were measured in stream water, sediment and algal samples on the day of herbicide application during Year 1 (September 2012 to June 2013), mainly as a result of spray drift, and in stream water during Year 2 (September 2013 to April 2014) at the time of a rainfall event seven days after herbicide application. Terbuthylazine concentrations exceeded New Zealand and World Health Organisation drinking water standards for <24 hours on both occasions. For the remainder of the trial period, concentrations of both herbicides were below safe drinking water standards. Herbicide concentrations in stream flow declined immediately below the trial site and were close to or below detection limits at the bottom of the catchment. The concentrations of terbuthylazine and hexazinone in stream flow during this trial, posed a short-term and low risk to algae. Peak concentrations of both herbicides were several orders of magnitude lower than Lethal Concentration (LC)50 concentrations for Daphnia and rainbow trout (Oncorhynchus mykiss). These results highlight the need to include data from both field and laboratory based trials when assessing the aquatic risk of these two herbicides when applied under operational conditions in planted forests.

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The Assessment of Bioaccumulation

Cited by 20 publications

References 0 publications

Photodegradation of naproxen and its photoproducts in aqueous solution at 254 nm: A kinetic investigation

Photodegradation of naproxen and its photoproducts in aqueous solution at 254 nm: A kinetic investigation

Bioaccumulation of Polybrominated Diphenyl Ethers by Tubifex Tubifex

Aquatic Fate of Aerially Applied Hexazinone and Terbuthylazine in a New Zealand Planted Forest

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