Does Soil Drying in a Lab Affect Arsenic Speciation in Strongly Contaminated Soils?
This study examined the changes in extractability and fractionation of arsenic (As) that can be caused by the drying of strongly polluted anoxic soil samples. Two untreated and manure-amended soils were incubated for 7 and 21 days in flooded conditions. Thereafter, As water- and 1 M NH<sub>4&l...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/12/2/223 |
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| author | Anna Karczewska Agnieszka Dradrach Bernard Gałka Katarzyna Szopka |
| author_facet | Anna Karczewska Agnieszka Dradrach Bernard Gałka Katarzyna Szopka |
| author_sort | Anna Karczewska |
| collection | DOAJ |
| description | This study examined the changes in extractability and fractionation of arsenic (As) that can be caused by the drying of strongly polluted anoxic soil samples. Two untreated and manure-amended soils were incubated for 7 and 21 days in flooded conditions. Thereafter, As water- and 1 M NH<sub>4</sub>NO<sub>3</sub>-extractability and As fractionation in a 5-step sequential extraction according to Wenzel were examined in fresh, oven-dried and air-dried samples. Soil treatment with manure considerably affected the results of the sequential extraction. Air-drying caused a significant decrease in As extractability with 1 M NH<sub>4</sub>NO<sub>3</sub> and in As concentrations in the F1 fraction. The highest reduction of extractability (30–41%) was found in manure-treated soils. Oven-drying resulted in a smaller reduction (5–34%) of As extractability. These effects were explained by opposing processes of As mobilization and immobilization. Sequential extraction did not allow for balancing As redistribution due to drying, as As loss from the F1 fraction was smaller than the confidence intervals in the other fractions. The results showed that for the precise determination of As extractability in anoxic soils, fresh samples should be analyzed. However, oven-dried samples may be used for a rough assessment of environmental risk, As the order of magnitude of easily soluble As did not change due to drying. |
| first_indexed | 2024-03-09T21:21:55Z |
| format | Article |
| id | doaj.art-9bb5107777e24b759973fbd295f99629 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-09T21:21:55Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-9bb5107777e24b759973fbd295f996292023-11-23T21:18:47ZengMDPI AGMinerals2075-163X2022-02-0112222310.3390/min12020223Does Soil Drying in a Lab Affect Arsenic Speciation in Strongly Contaminated Soils?Anna Karczewska0Agnieszka Dradrach1Bernard Gałka2Katarzyna Szopka3Institute of Soil Science, Plant Nutrition and Environmental Protection, Wrocław University of Environmental and Life Sciences, 50-375 Wroclaw, PolandInstitute of Agroecology and Plant Production, Wrocław University of Environmental and Life Sciences, 50-375 Wroclaw, PolandInstitute of Soil Science, Plant Nutrition and Environmental Protection, Wrocław University of Environmental and Life Sciences, 50-375 Wroclaw, PolandInstitute of Soil Science, Plant Nutrition and Environmental Protection, Wrocław University of Environmental and Life Sciences, 50-375 Wroclaw, PolandThis study examined the changes in extractability and fractionation of arsenic (As) that can be caused by the drying of strongly polluted anoxic soil samples. Two untreated and manure-amended soils were incubated for 7 and 21 days in flooded conditions. Thereafter, As water- and 1 M NH<sub>4</sub>NO<sub>3</sub>-extractability and As fractionation in a 5-step sequential extraction according to Wenzel were examined in fresh, oven-dried and air-dried samples. Soil treatment with manure considerably affected the results of the sequential extraction. Air-drying caused a significant decrease in As extractability with 1 M NH<sub>4</sub>NO<sub>3</sub> and in As concentrations in the F1 fraction. The highest reduction of extractability (30–41%) was found in manure-treated soils. Oven-drying resulted in a smaller reduction (5–34%) of As extractability. These effects were explained by opposing processes of As mobilization and immobilization. Sequential extraction did not allow for balancing As redistribution due to drying, as As loss from the F1 fraction was smaller than the confidence intervals in the other fractions. The results showed that for the precise determination of As extractability in anoxic soils, fresh samples should be analyzed. However, oven-dried samples may be used for a rough assessment of environmental risk, As the order of magnitude of easily soluble As did not change due to drying.https://www.mdpi.com/2075-163X/12/2/223arsenicsoilextractabilityfractionationtailingsZłoty Stok |
| spellingShingle | Anna Karczewska Agnieszka Dradrach Bernard Gałka Katarzyna Szopka Does Soil Drying in a Lab Affect Arsenic Speciation in Strongly Contaminated Soils? Minerals arsenic soil extractability fractionation tailings Złoty Stok |
| title | Does Soil Drying in a Lab Affect Arsenic Speciation in Strongly Contaminated Soils? |
| title_full | Does Soil Drying in a Lab Affect Arsenic Speciation in Strongly Contaminated Soils? |
| title_fullStr | Does Soil Drying in a Lab Affect Arsenic Speciation in Strongly Contaminated Soils? |
| title_full_unstemmed | Does Soil Drying in a Lab Affect Arsenic Speciation in Strongly Contaminated Soils? |
| title_short | Does Soil Drying in a Lab Affect Arsenic Speciation in Strongly Contaminated Soils? |
| title_sort | does soil drying in a lab affect arsenic speciation in strongly contaminated soils |
| topic | arsenic soil extractability fractionation tailings Złoty Stok |
| url | https://www.mdpi.com/2075-163X/12/2/223 |
| work_keys_str_mv | AT annakarczewska doessoildryinginalabaffectarsenicspeciationinstronglycontaminatedsoils AT agnieszkadradrach doessoildryinginalabaffectarsenicspeciationinstronglycontaminatedsoils AT bernardgałka doessoildryinginalabaffectarsenicspeciationinstronglycontaminatedsoils AT katarzynaszopka doessoildryinginalabaffectarsenicspeciationinstronglycontaminatedsoils |