Phytotoxkit/Phytotestkit and Microtox® as tools for toxicity assessment of sediments

Agnieszka Baran , Marek Tarnawski

Abstract

The aim of the study was to use bioassays to evaluate the toxicity of pore water, sediments and sediments elutriates. Furthermore, a possible relationship between observed toxicity and results of chemical analysis was examined. Sediment (0-10 cm) samples were collected from 21 locations in Zeslawice reservoir, Southern Poland using an Ekman sampler. Toxicity assessment of the sediment and pore water samples was performed using direct-contact tests Phytotoxkit/Phytotestkit and Microtox®. Inhibition of seed germination in the test plants was from -25 to 38 percent for sediment and from 0 to 50 percent for pore water, whereas inhibition of root growth was within a range from -42 to 37 percent for sediment and from -49 to 37 percent for pore water. Depending on the sediments, Vibrio fischeri luminescence inhibition was from -18 to 40 percent for sediments elutriates and from -12 to 28 percent for pore water. The toxicity tests showed a positive correlation between metals and the root growth inhibition in Lepidium sativum and Sinapis alba as well as the luminescence inhibition in V. fischeri. No significant correlations were found between the inhibition of luminescence and the phytotoxicity assays, so these analyses do not show a similar sensitivity to toxicants in the sediments. While estimating the sensitivity of the performed biotests, the highest number of toxic responses was recorded in the Microtox® test towards V. fischeri. Among the plant species, Sorghum saccharatum appears to be the most sensitive plant species. Most of the examined sediment samples (67 percent) were classified as class II (low-toxic samples, low acute hazard) and 33 percent of the examined samples were class I (no essential toxic effect, non-toxic sample, no acute hazard) in terms of toxicity. Most of the pore water samples (71 percent) were also classified as class II.
Author Agnieszka Baran (FoAE / DoAaECh)
Agnieszka Baran,,
- Department of Agricultural and Environmental Chemistry
, Marek Tarnawski (FoEEaLS / DoHEaG)
Marek Tarnawski,,
- Department of Hydraulic Engineering and Geotechnics
Journal seriesEcotoxicology and Environmental Safety, ISSN 0147-6513, (A 30 pkt)
Issue year2013
Vol98
Pages19-27
Publication size in sheets0.5
Keywords in Englishsediment, pore water, toxicity, Phytotoxkit, Microtox®
ASJC Classification2307 Health, Toxicology and Mutagenesis; 2739 Public Health, Environmental and Occupational Health; 2310 Pollution; 2700 General Medicine
DOIDOI:10.1016/j.ecoenv.2013.10.010
URL http://www.sciencedirect.com/science/article/pii/S0147651313004351
Internal identifierWRE/2013/49
Languageen angielski
Score (nominal)30
Score sourcejournalList
Publication indicators WoS Citations = 36; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.317; WoS Impact Factor: 2013 = 2.482 (2) - 2013=2.715 (5)
Citation count*7 (2015-12-12)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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