Arsenic reactions and brake fern (Pteris vittata L.) uptake in tropical soils
In Hawaii, past use of arsenical pesticides has left elevated levels of arsenic (As) in some soils. Sorption isotherms of an Andosol and an Acrisol showed that the former required 1100 mg/kg, and the latter 300 mg/kg of added As to maintain 0.20 mg As/L in solution, the maximum allowable As level in...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2017-02-01
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| Series: | Plant, Soil and Environment |
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| Online Access: | https://pse.agriculturejournals.cz/artkey/pse-201702-0002_arsenic-reactions-and-brake-fern-pteris-vittata-l-uptake-in-tropical-soils.php |
| _version_ | 1797898148586192896 |
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| author | Hue Van NGUYEN Amjad AHMAD |
| author_facet | Hue Van NGUYEN Amjad AHMAD |
| author_sort | Hue Van NGUYEN |
| collection | DOAJ |
| description | In Hawaii, past use of arsenical pesticides has left elevated levels of arsenic (As) in some soils. Sorption isotherms of an Andosol and an Acrisol showed that the former required 1100 mg/kg, and the latter 300 mg/kg of added As to maintain 0.20 mg As/L in solution, the maximum allowable As level in streams/rivers in Hawaii. Greenhouse experiments were conducted on an Andosol (315 mg/kg total As), which was amended with 0, 5 g/kg compost, 5 g Fe/kg as amorphous Fe(OH)3, or 250 mg P/kg as Ca(H2PO4)2, and on a low-As (15 mg/kg) Acrisol, which was spiked with 0, 150 or 300 mg As/kg as Na2HAsO4.7 H2O. Brake fern (Pteris vittata L.) was used as the test plant. Arsenic concentration in the fern fronds averaged 355 mg/kg in the Andosol, and 2610 and 1270 mg/kg (from consecutive plantings, 2 and 12 months after As addition, respectively) in the Acrisol spiked with 300 mg/kg of As. Chemical reactions, as suggested by sequential extractions, likely controlled the availability and uptake of soil As. Mehlich-3 extraction could be used to identify As-contaminated soils and potential phytoremediation as it correlated well with bioaccessible As and with As in fern fronds. |
| first_indexed | 2024-04-10T08:09:53Z |
| format | Article |
| id | doaj.art-85f1dd56553f4ee3a7fb04fc944f5934 |
| institution | Directory Open Access Journal |
| issn | 1214-1178 1805-9368 |
| language | English |
| last_indexed | 2024-04-10T08:09:53Z |
| publishDate | 2017-02-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Plant, Soil and Environment |
| spelling | doaj.art-85f1dd56553f4ee3a7fb04fc944f59342023-02-23T03:46:31ZengCzech Academy of Agricultural SciencesPlant, Soil and Environment1214-11781805-93682017-02-01632556110.17221/428/2016-PSEpse-201702-0002Arsenic reactions and brake fern (Pteris vittata L.) uptake in tropical soilsHue Van NGUYENAmjad AHMAD0Department of Tropical Plant and Soil Sciences, University of Hawaii at Manoa, Honolulu, USAIn Hawaii, past use of arsenical pesticides has left elevated levels of arsenic (As) in some soils. Sorption isotherms of an Andosol and an Acrisol showed that the former required 1100 mg/kg, and the latter 300 mg/kg of added As to maintain 0.20 mg As/L in solution, the maximum allowable As level in streams/rivers in Hawaii. Greenhouse experiments were conducted on an Andosol (315 mg/kg total As), which was amended with 0, 5 g/kg compost, 5 g Fe/kg as amorphous Fe(OH)3, or 250 mg P/kg as Ca(H2PO4)2, and on a low-As (15 mg/kg) Acrisol, which was spiked with 0, 150 or 300 mg As/kg as Na2HAsO4.7 H2O. Brake fern (Pteris vittata L.) was used as the test plant. Arsenic concentration in the fern fronds averaged 355 mg/kg in the Andosol, and 2610 and 1270 mg/kg (from consecutive plantings, 2 and 12 months after As addition, respectively) in the Acrisol spiked with 300 mg/kg of As. Chemical reactions, as suggested by sequential extractions, likely controlled the availability and uptake of soil As. Mehlich-3 extraction could be used to identify As-contaminated soils and potential phytoremediation as it correlated well with bioaccessible As and with As in fern fronds.https://pse.agriculturejournals.cz/artkey/pse-201702-0002_arsenic-reactions-and-brake-fern-pteris-vittata-l-uptake-in-tropical-soils.phpsoil arsenictoxicitysorption-desorptionamorphous iron-hydroxides |
| spellingShingle | Hue Van NGUYEN Amjad AHMAD Arsenic reactions and brake fern (Pteris vittata L.) uptake in tropical soils Plant, Soil and Environment soil arsenic toxicity sorption-desorption amorphous iron-hydroxides |
| title | Arsenic reactions and brake fern (Pteris vittata L.) uptake in tropical soils |
| title_full | Arsenic reactions and brake fern (Pteris vittata L.) uptake in tropical soils |
| title_fullStr | Arsenic reactions and brake fern (Pteris vittata L.) uptake in tropical soils |
| title_full_unstemmed | Arsenic reactions and brake fern (Pteris vittata L.) uptake in tropical soils |
| title_short | Arsenic reactions and brake fern (Pteris vittata L.) uptake in tropical soils |
| title_sort | arsenic reactions and brake fern pteris vittata l uptake in tropical soils |
| topic | soil arsenic toxicity sorption-desorption amorphous iron-hydroxides |
| url | https://pse.agriculturejournals.cz/artkey/pse-201702-0002_arsenic-reactions-and-brake-fern-pteris-vittata-l-uptake-in-tropical-soils.php |
| work_keys_str_mv | AT huevannguyen arsenicreactionsandbrakefernpterisvittataluptakeintropicalsoils AT amjadahmad arsenicreactionsandbrakefernpterisvittataluptakeintropicalsoils |