Particle‐specific sorption/desorption properties determine test compound fate and bioavailability in toxicity tests with Chironomus riparius—high‐resolution studies with lindane
Open Access
- 5 April 2010
- journal article
- research article
- Published by Wiley in Environmental Toxicology and Chemistry
- Vol. 29 (7), 1520-1528
- https://doi.org/10.1002/etc.194
Abstract
We studied the sorption (batch equilibrium experiments) and desorption (consecutively harsher supercritical fluid extractions) of lindane to different types of sediment and food particles, as well as larval uptake in standardized peat-based artificial sediment toxicity tests with the midge Chironomus riparius. Lindane sorption to organic particles was fast and efficient, reaching 98 ± 0.1 and 97 ± 0.1% of added compound in 48 h for peat and Tetraphyll®, respectively, and 77 ± 0.2% in whole sediment. Sorption to inorganic particles, that is, sand and kaolin clay, was much lower, 9.6 ± 1.3% and 8.3 ± 0.8%, respectively. Supercritical fluid extractions showed that most of the lindane sorbed to organic particles and sediment was loosely bound, as only 9 to 14% remained associated with particles after weak and intermediate extractions strengths. Larval uptake of dissolved lindane was 4.9 ± 0.71 and 10.8 ± 1.2 µg/g wet weight in 22 and 68 µg/L treatments, respectively, and four to five times higher than that of particle-associated lindane, ranging 1.0 ± 0.15 to 2.7 ± 0.21 µg/g in the above treatments. Surprisingly, larval uptake of lindane was similar from refractory peat and the more labile Tetraphyll particles. Despite an efficient larval uptake of dissolved lindane, sorption/desorption of lindane to/from Tetraphyll particles will facilitate digestive uptake in toxicity tests, particularly in spiked-water scenarios where food particles may act as vectors. Our results show that the exposure scenario is an important determinant for the behavior and bioavailability of test compounds in standardized toxicity tests. Environ. Toxicol. Chem. 2010;29:1520–1528. © 2010 SETACKeywords
This publication has 30 references indexed in Scilit:
- Selective supercritical fluid extraction to identify aged sediment-bound PCBs available for uptake by eelEnvironmental Pollution, 2006
- Stable isotopes and fatty acids reveal that Chironomus riparius feeds selectively on added food in standardized toxicity testsEnvironmental Toxicology and Chemistry, 2003
- The fate, distribution, and toxicity of lindane in tests with Chironomus riparius: Effects of bioturbation and sediment organic matter contentEnvironmental Toxicology and Chemistry, 2003
- Effects of exposure source, worm density, and sex on DDT bioaccumulation and toxicity in the marine polychaete Neanthes arenaceodentataEnvironmental Toxicology and Chemistry, 2000
- Bioavailability of particle‐associated silver, cadmium, and zinc to the estuarine amphipod Leptocheirus plumulosus through dietary ingestionLimnology and Oceanography, 2000
- Influence of sediment‐organic matter quality on growth and polychlorobiphenyl bioavailability in Echinodermata (Amphiura filiformis)Environmental Toxicology and Chemistry, 1999
- Effects of chronic metal exposure and sediment organic matter on digestive absorption efficiency of cadmium by the deposit‐feeding polychaete Capitella species IEnvironmental Toxicology and Chemistry, 1999
- Toxicity of permethrin toChironomus ripariusin artificial and natural sedimentsEnvironmental Toxicology and Chemistry, 1998
- Aquatic organisms and pyrethroidsPesticide Science, 1989
- Soil Properties Influencing Sorption and Desorption of LindaneSoil Science Society of America Journal, 1971