Environmental assessment of heavy metals and organotin compounds in Cape Town harbour, monitoring geochemistry and toxicity

Analytical methods for speciation of targeted organotin compounds (TBT and TPT) in water samples using SPE cartridge and liquid-liquid extraction has been carried out. Also, sediment analysis using methanol - acid digestion and acid- sonication extraction methods were also developed. Different...

Full description

Bibliographic Details
Main Author: Okoro, Hussein Kehinde
Other Authors: Fakoti, Olalekan S., Prof
Language:en
Published: Cape Peninsula University of Technology 2015
Online Access:http://hdl.handle.net/20.500.11838/763
id ndltd-netd.ac.za-oai-union.ndltd.org-cput-oai-localhost-20.500.11838-763
record_format oai_dc
spelling ndltd-netd.ac.za-oai-union.ndltd.org-cput-oai-localhost-20.500.11838-7632020-10-08T05:10:52Z Environmental assessment of heavy metals and organotin compounds in Cape Town harbour, monitoring geochemistry and toxicity Okoro, Hussein Kehinde Fakoti, Olalekan S., Prof Snyman R.G Adekola, F.A Analytical methods for speciation of targeted organotin compounds (TBT and TPT) in water samples using SPE cartridge and liquid-liquid extraction has been carried out. Also, sediment analysis using methanol - acid digestion and acid- sonication extraction methods were also developed. Different parameters affecting extraction and peak resolution were optimised. Also, three derivatisation procedures were optimised. The accuracy of the extraction procedure was also verified on certified reference material (BCR - 462) certified for TBT (54 ± 15 µg/kg) and DBT (68 ± 12 µg/kg). Freeze - dried mussel tissue (ERM - CE 477) certified for TBT (2.20 ± 0.19 mg/kg), DBT (1.54 ± 0.12 mg/kg) and MBT (1.50 ± 0.28 mg/kg). Good recoveries were obtained with methanol - acid digestion. The results were validated by analysing the real water and sediment samples collected from Cape Town harbour and the compounds were detected in both water and sediment samples, respectively. 2015-02-24T08:23:29Z 2016-01-27T08:01:05Z 2015-02-24T08:23:29Z 2016-01-27T08:01:05Z 2013 Thesis http://hdl.handle.net/20.500.11838/763 en Cape Peninsula University of Technology
collection NDLTD
language en
sources NDLTD
description Analytical methods for speciation of targeted organotin compounds (TBT and TPT) in water samples using SPE cartridge and liquid-liquid extraction has been carried out. Also, sediment analysis using methanol - acid digestion and acid- sonication extraction methods were also developed. Different parameters affecting extraction and peak resolution were optimised. Also, three derivatisation procedures were optimised. The accuracy of the extraction procedure was also verified on certified reference material (BCR - 462) certified for TBT (54 ± 15 µg/kg) and DBT (68 ± 12 µg/kg). Freeze - dried mussel tissue (ERM - CE 477) certified for TBT (2.20 ± 0.19 mg/kg), DBT (1.54 ± 0.12 mg/kg) and MBT (1.50 ± 0.28 mg/kg). Good recoveries were obtained with methanol - acid digestion. The results were validated by analysing the real water and sediment samples collected from Cape Town harbour and the compounds were detected in both water and sediment samples, respectively.
author2 Fakoti, Olalekan S., Prof
author_facet Fakoti, Olalekan S., Prof
Okoro, Hussein Kehinde
author Okoro, Hussein Kehinde
spellingShingle Okoro, Hussein Kehinde
Environmental assessment of heavy metals and organotin compounds in Cape Town harbour, monitoring geochemistry and toxicity
author_sort Okoro, Hussein Kehinde
title Environmental assessment of heavy metals and organotin compounds in Cape Town harbour, monitoring geochemistry and toxicity
title_short Environmental assessment of heavy metals and organotin compounds in Cape Town harbour, monitoring geochemistry and toxicity
title_full Environmental assessment of heavy metals and organotin compounds in Cape Town harbour, monitoring geochemistry and toxicity
title_fullStr Environmental assessment of heavy metals and organotin compounds in Cape Town harbour, monitoring geochemistry and toxicity
title_full_unstemmed Environmental assessment of heavy metals and organotin compounds in Cape Town harbour, monitoring geochemistry and toxicity
title_sort environmental assessment of heavy metals and organotin compounds in cape town harbour, monitoring geochemistry and toxicity
publisher Cape Peninsula University of Technology
publishDate 2015
url http://hdl.handle.net/20.500.11838/763
work_keys_str_mv AT okorohusseinkehinde environmentalassessmentofheavymetalsandorganotincompoundsincapetownharbourmonitoringgeochemistryandtoxicity
_version_ 1719351442769182720