Determination of organophosphorus pesticides using rambutan peel-based activated carbon as sorbent
Rambutan peel-based activated carbon (RPAC) was prepared and applied as sorbent for dispersive solid phase extraction (DSPE). In this study, the developed sorbent was successfully characterized by using Scanning Electron Microscopy (SEM). Two selected organophosphorus pesticides (OPPs) namely chlorp...
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my.umk.eprints.65872022-05-23T08:48:07Z http://discol.umk.edu.my/id/eprint/6587/ Determination of organophosphorus pesticides using rambutan peel-based activated carbon as sorbent Nur Amirah Syahirah Ibrahim Rambutan peel-based activated carbon (RPAC) was prepared and applied as sorbent for dispersive solid phase extraction (DSPE). In this study, the developed sorbent was successfully characterized by using Scanning Electron Microscopy (SEM). Two selected organophosphorus pesticides (OPPs) namely chlorpyrifos and profenofos were employed as model compounds to evaluate the extraction performance of the synthesized rambutan peel-based activated carbon. Analysis was performed using UV-Vis Spectrophotometry. Several vital DSPE parameters were optimized. Under the optimum extraction conditions, the DSPE-RPAC method showed coefficient of determination of r²=O.9674 and r²=O.8844 for chlorpyrifos and profenofos respectively. The limit of detection (LOD) obtained were 5.74 for chlorpyrifos and 6.04 mg kg⁻¹ for profenofos. On the other hand, the limit of quantification (LOQ) was 17.39 and 18.29 mg kg⁻¹ for chlorpyrifos and profenofos respectively. The developed RPAC dSPE method was successfully applied to real sample analysis of the selected OPPs for lettuce. Excellent RSDs were obtained from the lettuce sample. The RSDs obtained for chlorpyrifos was 0.48% (intra-day) and 3.3% (inter-day) while for profenofos, the RSDs obtained was 1.17% (intra-day) and 2.84% (inter-day). The RPAC sorbent demonstrate the potential as an alternative inexpensive extraction sorbent for OPPs. 2016 Undergraduate Final Project Report NonPeerReviewed Nur Amirah Syahirah Ibrahim (2016) Determination of organophosphorus pesticides using rambutan peel-based activated carbon as sorbent. Undergraduate Final Project Report thesis, Faculty of Agro - Based Industry. (Submitted) |
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Rambutan peel-based activated carbon (RPAC) was prepared and applied as sorbent for dispersive solid phase extraction (DSPE). In this study, the developed sorbent was successfully characterized by using Scanning Electron Microscopy (SEM). Two selected organophosphorus pesticides (OPPs) namely chlorpyrifos and profenofos were employed as model compounds to evaluate the extraction
performance of the synthesized rambutan peel-based activated carbon. Analysis was performed using UV-Vis Spectrophotometry. Several vital DSPE parameters were
optimized. Under the optimum extraction conditions, the DSPE-RPAC method showed coefficient of determination of r²=O.9674 and r²=O.8844 for chlorpyrifos and profenofos respectively. The limit of detection (LOD) obtained were 5.74 for chlorpyrifos and 6.04 mg kg⁻¹ for profenofos. On the other hand, the limit of quantification (LOQ) was 17.39 and 18.29 mg kg⁻¹ for chlorpyrifos and profenofos
respectively. The developed RPAC dSPE method was successfully applied to real sample analysis of the selected OPPs for lettuce. Excellent RSDs were obtained from the lettuce sample. The RSDs obtained for chlorpyrifos was 0.48% (intra-day) and 3.3% (inter-day) while for profenofos, the RSDs obtained was 1.17% (intra-day) and 2.84% (inter-day). The RPAC sorbent demonstrate the potential as an alternative inexpensive extraction sorbent for OPPs. |
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Undergraduate Final Project Report |
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Nur Amirah Syahirah Ibrahim |
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Nur Amirah Syahirah Ibrahim Determination of organophosphorus pesticides using rambutan peel-based activated carbon as sorbent |
author_facet |
Nur Amirah Syahirah Ibrahim |
author_sort |
Nur Amirah Syahirah Ibrahim |
title |
Determination of organophosphorus pesticides using rambutan peel-based activated carbon as sorbent |
title_short |
Determination of organophosphorus pesticides using rambutan peel-based activated carbon as sorbent |
title_full |
Determination of organophosphorus pesticides using rambutan peel-based activated carbon as sorbent |
title_fullStr |
Determination of organophosphorus pesticides using rambutan peel-based activated carbon as sorbent |
title_full_unstemmed |
Determination of organophosphorus pesticides using rambutan peel-based activated carbon as sorbent |
title_sort |
determination of organophosphorus pesticides using rambutan peel-based activated carbon as sorbent |
publishDate |
2016 |
url |
http://discol.umk.edu.my/id/eprint/6587/ |
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1763303718423363584 |
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13.18916 |