Prediction of Soil Cadmium Bioavailability to Cacao (Theobroma Cacao L.) Using Single-Step Extraction Procedures.
In this study, complexation extractants ammonium bicarbonate diethylene triamine pentaacetic acid (AB-DTPA), diethylene triamine pentaacetic Acid (DTPA), ethylene diamine tetraacetic acid (EDTA), and mild cation-exchange extractants calcium chloride (CaCl2) and ammonium nitrate (NH4NO3) were used to evaluate the bioavailability of cadmium (Cd) in soil to cacao in the field. Among the five extractants, the extractable Cd generally followed the order: EDTA>DTPA>AB-DTPA>CaCl2>NH4NO3. Correlation analysis was done between the extractable Cd in soil and total Cd content of cacao tissues (nibs, shells, leaves and pods). The Cd extracted by CaCl2 and NH4NO3 were significantly (p<0.05) correlated with some of the tissues but their Pearson correlation coefficients were weak. In contrast, extractants AB-DTPA, DTPA and EDTA showed stronger, significant correlations to the Cd concentration in all four tissues. Overall, regression analysis demonstrated that AB-DTPA, DTPA or EDTA can be used to predict bioavailable Cd in soils for cacao. Of these, AB-DTPA and DTPA both showed strongest correlations between soil Cd compared to EDTA. However, the ease of preparation and the superior shelf-life of DTPA over AB-DPTA makes it the preferred reagent for Cd bioavailability extractions from cacao soils and is currently being used to develop cost-effective soil treatments to reduce bioavailable Cd to cacao plants.
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Oxfordshire, United Kingdom Taylor & Francis
2015
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Subjects: | theobroma cacao, contamination, cadmium, |
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KOHA-OAI-BVE:1502062022-10-07T00:50:29ZPrediction of Soil Cadmium Bioavailability to Cacao (Theobroma Cacao L.) Using Single-Step Extraction Procedures. Ramtahal, Gideon Yen, Ivan Ahmad, Nazeer Bekele, Isaac Bekele, Frances Wilson, Lawrence Harrynanan, Lisa Maharaj, Kamaldeo textOxfordshire, United Kingdom Taylor & Francis2015 dIn this study, complexation extractants ammonium bicarbonate diethylene triamine pentaacetic acid (AB-DTPA), diethylene triamine pentaacetic Acid (DTPA), ethylene diamine tetraacetic acid (EDTA), and mild cation-exchange extractants calcium chloride (CaCl2) and ammonium nitrate (NH4NO3) were used to evaluate the bioavailability of cadmium (Cd) in soil to cacao in the field. Among the five extractants, the extractable Cd generally followed the order: EDTA>DTPA>AB-DTPA>CaCl2>NH4NO3. Correlation analysis was done between the extractable Cd in soil and total Cd content of cacao tissues (nibs, shells, leaves and pods). The Cd extracted by CaCl2 and NH4NO3 were significantly (p<0.05) correlated with some of the tissues but their Pearson correlation coefficients were weak. In contrast, extractants AB-DTPA, DTPA and EDTA showed stronger, significant correlations to the Cd concentration in all four tissues. Overall, regression analysis demonstrated that AB-DTPA, DTPA or EDTA can be used to predict bioavailable Cd in soils for cacao. Of these, AB-DTPA and DTPA both showed strongest correlations between soil Cd compared to EDTA. However, the ease of preparation and the superior shelf-life of DTPA over AB-DPTA makes it the preferred reagent for Cd bioavailability extractions from cacao soils and is currently being used to develop cost-effective soil treatments to reduce bioavailable Cd to cacao plants. In this study, complexation extractants ammonium bicarbonate diethylene triamine pentaacetic acid (AB-DTPA), diethylene triamine pentaacetic Acid (DTPA), ethylene diamine tetraacetic acid (EDTA), and mild cation-exchange extractants calcium chloride (CaCl2) and ammonium nitrate (NH4NO3) were used to evaluate the bioavailability of cadmium (Cd) in soil to cacao in the field. Among the five extractants, the extractable Cd generally followed the order: EDTA>DTPA>AB-DTPA>CaCl2>NH4NO3. Correlation analysis was done between the extractable Cd in soil and total Cd content of cacao tissues (nibs, shells, leaves and pods). The Cd extracted by CaCl2 and NH4NO3 were significantly (p<0.05) correlated with some of the tissues but their Pearson correlation coefficients were weak. In contrast, extractants AB-DTPA, DTPA and EDTA showed stronger, significant correlations to the Cd concentration in all four tissues. Overall, regression analysis demonstrated that AB-DTPA, DTPA or EDTA can be used to predict bioavailable Cd in soils for cacao. Of these, AB-DTPA and DTPA both showed strongest correlations between soil Cd compared to EDTA. However, the ease of preparation and the superior shelf-life of DTPA over AB-DPTA makes it the preferred reagent for Cd bioavailability extractions from cacao soils and is currently being used to develop cost-effective soil treatments to reduce bioavailable Cd to cacao plants. theobroma cacao contamination cadmiumhttps://drive.google.com/drive/folders/1eJzYQK7OknOiKolkHhfQqM55r0uEtZ93?usp=sharing |
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theobroma cacao contamination cadmium theobroma cacao contamination cadmium Ramtahal, Gideon Yen, Ivan Ahmad, Nazeer Bekele, Isaac Bekele, Frances Wilson, Lawrence Harrynanan, Lisa Maharaj, Kamaldeo Prediction of Soil Cadmium Bioavailability to Cacao (Theobroma Cacao L.) Using Single-Step Extraction Procedures. |
description |
In this study, complexation extractants ammonium bicarbonate diethylene triamine pentaacetic
acid (AB-DTPA), diethylene triamine pentaacetic Acid (DTPA), ethylene diamine tetraacetic
acid (EDTA), and mild cation-exchange extractants calcium chloride (CaCl2) and ammonium
nitrate (NH4NO3) were used to evaluate the bioavailability of cadmium (Cd) in soil to cacao in
the field. Among the five extractants, the extractable Cd generally followed the order:
EDTA>DTPA>AB-DTPA>CaCl2>NH4NO3. Correlation analysis was done between the
extractable Cd in soil and total Cd content of cacao tissues (nibs, shells, leaves and pods). The
Cd extracted by CaCl2 and NH4NO3 were significantly (p<0.05) correlated with some of the
tissues but their Pearson correlation coefficients were weak. In contrast, extractants AB-DTPA,
DTPA and EDTA showed stronger, significant correlations to the Cd concentration in all four
tissues. Overall, regression analysis demonstrated that AB-DTPA, DTPA or EDTA can be used to predict bioavailable Cd in soils for cacao. Of these, AB-DTPA and DTPA both showed
strongest correlations between soil Cd compared to EDTA. However, the ease of preparation and
the superior shelf-life of DTPA over AB-DPTA makes it the preferred reagent for Cd
bioavailability extractions from cacao soils and is currently being used to develop cost-effective
soil treatments to reduce bioavailable Cd to cacao plants.
|
format |
Texto |
topic_facet |
theobroma cacao contamination cadmium |
author |
Ramtahal, Gideon Yen, Ivan Ahmad, Nazeer Bekele, Isaac Bekele, Frances Wilson, Lawrence Harrynanan, Lisa Maharaj, Kamaldeo |
author_facet |
Ramtahal, Gideon Yen, Ivan Ahmad, Nazeer Bekele, Isaac Bekele, Frances Wilson, Lawrence Harrynanan, Lisa Maharaj, Kamaldeo |
author_sort |
Ramtahal, Gideon |
title |
Prediction of Soil Cadmium Bioavailability to Cacao (Theobroma Cacao L.) Using Single-Step Extraction Procedures. |
title_short |
Prediction of Soil Cadmium Bioavailability to Cacao (Theobroma Cacao L.) Using Single-Step Extraction Procedures. |
title_full |
Prediction of Soil Cadmium Bioavailability to Cacao (Theobroma Cacao L.) Using Single-Step Extraction Procedures. |
title_fullStr |
Prediction of Soil Cadmium Bioavailability to Cacao (Theobroma Cacao L.) Using Single-Step Extraction Procedures. |
title_full_unstemmed |
Prediction of Soil Cadmium Bioavailability to Cacao (Theobroma Cacao L.) Using Single-Step Extraction Procedures. |
title_sort |
prediction of soil cadmium bioavailability to cacao (theobroma cacao l.) using single-step extraction procedures. |
publisher |
Oxfordshire, United Kingdom Taylor & Francis |
publishDate |
2015 |
url |
https://drive.google.com/drive/folders/1eJzYQK7OknOiKolkHhfQqM55r0uEtZ93?usp=sharing |
work_keys_str_mv |
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