Validating potential toxicity assays to assess petroleum hydrocarbon toxicity in polar soil
Abstract Potential microbial activities are commonly used to assess soil toxicity of petroleum hydrocarbons (PHC) and are assumed to be a surrogate for microbial activity within the soil ecosystem. However, this assumption needs to be evaluated for frozen soil, in which microbial activity is limited...
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crwiley:10.1002/etc.744 2024-06-02T07:57:20+00:00 Validating potential toxicity assays to assess petroleum hydrocarbon toxicity in polar soil Harvey, Alexis Nadine Snape, Ian Siciliano, Steven Douglas 2011 http://dx.doi.org/10.1002/etc.744 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fetc.744 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.744 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Toxicology and Chemistry volume 31, issue 2, page 402-407 ISSN 0730-7268 1552-8618 journal-article 2011 crwiley https://doi.org/10.1002/etc.744 2024-05-03T10:40:15Z Abstract Potential microbial activities are commonly used to assess soil toxicity of petroleum hydrocarbons (PHC) and are assumed to be a surrogate for microbial activity within the soil ecosystem. However, this assumption needs to be evaluated for frozen soil, in which microbial activity is limited by liquid water (θ liquid ). Influence of θ liquid on in situ toxicity was evaluated and compared to the toxicity endpoints of potential microbial activities using soil from an aged diesel fuel spill at Casey Station, East Antarctica. To determine in situ toxicity, gross mineralization and nitrification rates were determined by the stable isotope dilution technique. Petroleum hydrocarbon‐contaminated soil (0–8,000 mg kg −1 ), packed at bulk densities of 1.4, 1.7, and 2.0 g cm −3 to manipulate liquid water content, was incubated at −5°C for one, two, and three months. Although θ liquid did not have a significant effect on gross mineralization or nitrification, gross nitrification was sensitive to PHC contamination, with toxicity decreasing over time. In contrast, gross mineralization was not sensitive to PHC contamination. Toxic response of gross nitrification was comparable to potential nitrification activity (PNA) with similar EC25 (effective concentration causing a 25% effect in the test population) values determined by both measurement endpoints (400 mg kg −1 for gross nitrification compared to 200 mg kg −1 for PNA), indicating that potential microbial activity assays are good surrogates for in situ toxicity of PHC contamination in polar regions. Environ. Toxicol. Chem. 2012;31:402–407. © 2011 SETAC Article in Journal/Newspaper Antarc* Antarctica East Antarctica Wiley Online Library Casey Station ENVELOPE(110.528,110.528,-66.282,-66.282) East Antarctica Environmental Toxicology and Chemistry 31 2 402 407 |
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Open Polar |
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English |
description |
Abstract Potential microbial activities are commonly used to assess soil toxicity of petroleum hydrocarbons (PHC) and are assumed to be a surrogate for microbial activity within the soil ecosystem. However, this assumption needs to be evaluated for frozen soil, in which microbial activity is limited by liquid water (θ liquid ). Influence of θ liquid on in situ toxicity was evaluated and compared to the toxicity endpoints of potential microbial activities using soil from an aged diesel fuel spill at Casey Station, East Antarctica. To determine in situ toxicity, gross mineralization and nitrification rates were determined by the stable isotope dilution technique. Petroleum hydrocarbon‐contaminated soil (0–8,000 mg kg −1 ), packed at bulk densities of 1.4, 1.7, and 2.0 g cm −3 to manipulate liquid water content, was incubated at −5°C for one, two, and three months. Although θ liquid did not have a significant effect on gross mineralization or nitrification, gross nitrification was sensitive to PHC contamination, with toxicity decreasing over time. In contrast, gross mineralization was not sensitive to PHC contamination. Toxic response of gross nitrification was comparable to potential nitrification activity (PNA) with similar EC25 (effective concentration causing a 25% effect in the test population) values determined by both measurement endpoints (400 mg kg −1 for gross nitrification compared to 200 mg kg −1 for PNA), indicating that potential microbial activity assays are good surrogates for in situ toxicity of PHC contamination in polar regions. Environ. Toxicol. Chem. 2012;31:402–407. © 2011 SETAC |
format |
Article in Journal/Newspaper |
author |
Harvey, Alexis Nadine Snape, Ian Siciliano, Steven Douglas |
spellingShingle |
Harvey, Alexis Nadine Snape, Ian Siciliano, Steven Douglas Validating potential toxicity assays to assess petroleum hydrocarbon toxicity in polar soil |
author_facet |
Harvey, Alexis Nadine Snape, Ian Siciliano, Steven Douglas |
author_sort |
Harvey, Alexis Nadine |
title |
Validating potential toxicity assays to assess petroleum hydrocarbon toxicity in polar soil |
title_short |
Validating potential toxicity assays to assess petroleum hydrocarbon toxicity in polar soil |
title_full |
Validating potential toxicity assays to assess petroleum hydrocarbon toxicity in polar soil |
title_fullStr |
Validating potential toxicity assays to assess petroleum hydrocarbon toxicity in polar soil |
title_full_unstemmed |
Validating potential toxicity assays to assess petroleum hydrocarbon toxicity in polar soil |
title_sort |
validating potential toxicity assays to assess petroleum hydrocarbon toxicity in polar soil |
publisher |
Wiley |
publishDate |
2011 |
url |
http://dx.doi.org/10.1002/etc.744 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fetc.744 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.744 |
long_lat |
ENVELOPE(110.528,110.528,-66.282,-66.282) |
geographic |
Casey Station East Antarctica |
geographic_facet |
Casey Station East Antarctica |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_source |
Environmental Toxicology and Chemistry volume 31, issue 2, page 402-407 ISSN 0730-7268 1552-8618 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/etc.744 |
container_title |
Environmental Toxicology and Chemistry |
container_volume |
31 |
container_issue |
2 |
container_start_page |
402 |
op_container_end_page |
407 |
_version_ |
1800740486596526080 |