Organochlorine pesticide residues in farmed fish in Machakos and Kiambu counties, Kenya

Omwenga, Isaac; Kanja, Laetitia Wakonyu; Nguta, Joseph Mwanzia; Mbaria, James Mucunu; Irungu, Patrick

doi:10.1080/23311843.2016.1153215

Cited by 17 publications

(15 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ecological monitoring of organochlorine pesticide residues is one of the most essential aspects in assessing negative environmental impacts, potential hazards to human health and guide of pesticides legal use confirming public health provisions (Hrouzková et al, 2013;Omwenga et al, 2016). The maximum possible limits are 0.1 g/l for each pesticide and 0.5 g/l for total concentration of all pesticides (UNEP, 2011) based on toxicological considerations (WHO, 2004;MHR, 2008;EC, 2015a,b).…”

Section: Introductionmentioning

confidence: 99%

Validation method of organochlorine pesticides residues in water using gas chromatography–quadruple mass

El-Gawad¹

2016

Water Science

View full text Add to dashboard Cite

In analytical chemistry laboratories, it is critical to have a sensitive method to provide applicable qualitative and quantitative data. This research aimed to determine validated optimized method and acceptable Profession Test (PT) results of 18 organochlorine pesticides (OCPs) using gas chromatography operating with quadruple mass spectrophotometer (GC-QMS) and liquid-liquid extraction (LLE) technique. This will be used for acquiring accreditation and checking alternative instruments such as gas chromatography operational with flame ionization detector (GC-FID). Ismailia canal were selected to investigate organochlorine pesticides content in freshwater used for irrigation and drinking purposes. The obtained data for limit of quantification (LOQ) varied from 0.159 to 0.254 with Relative Standard Deviation (RSD%) below 20% (4.18-6.12). method detection limit (MDL) ranged from 0.04 to 0.08 g/ml and squared correlation coefficient (R 2) ranged from 0.9992 to 0.9999. The study concluded that application to real samples has been successfully assessed by optimized method.

show abstract

Section: Introductionmentioning

confidence: 99%

Validation method of organochlorine pesticides residues in water using gas chromatography–quadruple mass

El-Gawad¹

2016

Water Science

View full text Add to dashboard Cite

show abstract

“…However, results in this study carried out by Paired t-test statistical analysis method indicated a highly statistical significant difference between -HCH isomer and all the other isomers during the dry period. DDT residue levels uptake and presence in this study could be attributed to previous time of use for pest control and public health reasons locally [20,32]. Due to lipophilic effects of some organochlorine compounds, they are likely to be carried far and wide from its epicenter after undergoing bioaccumulation in biota such as fish [27].…”

Section: Discussionmentioning

confidence: 71%

“…Several studies including Refs. [29][30][31] and [32] have reported potential human health risk from the consumption of contaminated food [28]. The 1st order catchment area of Kuja River is a highland zone with high potential agricultural production and is densely populated (2,862 persons per km 2 ) [33].…”

Section: Introduction mentioning

confidence: 99%

Organochlorine Contaminants in Nile Tilapia, Oreochromis niloticus (Linnaeus 1758) in Densely Populated Areas of South-Western Kenya

Nyaundi¹,

Getabu²,

Mwamburi³

et al. 2020

JESE-B

View full text Add to dashboard Cite

Concentrations of OCP (Organochlorine Pesticide) residues were determined in cultured Nile tilapia (Oreochromis niloticus) fish in target stations within 1st order wetland of River Kuja, Kenya, between February-November, 2017. The aim was to assess the residue levels in wild and pond cultured fish within a heavily populated agricultural area of South Western Kenya. Biota samples were analysed for selected HCHs (Hexachlorocyclohexane) isomers, DDT (Dichlorodiphenyltrichloroethane) and metabolites and cyclodienes pesticide residues using GC-ECD (Gas Chromatography Equipped with Electron Capture Detector). Most of OCPs observed were BDL (Below Detection Limit) to detectable levels. Larger percentages (> 50%) of DDTs and HCHs were BDL and exhibited consistency, with significant (p < 0.05) differences in mean contamination levels in fish within the wetland, with average muscle tissue pesticides concentrate ranging between 0.229-2.541 g/kg for Nile tilapia. Most dominant isomer in target species was Lindane (-HCH) (3.417 ± 0.983 g/kg) and Endosulfans. Mean Endosulfan sulfate was 2.499 ± 0.071 g/kg d.w. and most frequently detected, and Methoxychlor (2.235 ± 1.459 g/kg), respectively. Mean Aldrin and Dieldrin was 2.028 and 0.574 g/kg d.w. Concentration for DDT and its metabolites was 0.27-3.71 g/kg for p, p'-DDE (DichlorodiphenylDichloroEthene), BDL-1.098 for p, p'-DDD (DichloroDiphenylDichloroEthane), and 0.105-3.518 g/kg for p, p'-DDT with significant differences in mean values and ranges whose levels were below the WHO (World Health Organization) maximum acceptable thresholds of 0.2, 2, 20 and 5.0 g/kg in fish and sea food. Interventions and monitoring need up-scaling in minimizing public health risks posed by consumption and exposure.

show abstract

“…Data collection was undertaken by the use of a semi-structured questionnaire administered through informed adult consent with the household as the basic sampling unit. The standard questionnaire was structured in accordance with the Likert Scale whereby the respondents were offered a choice of five precoded responses with the neutral point being neither agree nor disagree [20]. The questionnaire was structured to enable the assessment of the level of public acceptance and public views on maize related biotechnology including GM maize in relation to biodiversity conservation and biosafety, public health and religious ethics.…”

Section: Study Sitementioning

confidence: 99%

Biotechnology and Food Security in Kenya - An Assessment of Public Concerns on Biosafety, Public Health and Religious Ethics

Mbugua-Gitonga¹,

Mwaura²,

Thenya³

2016

JABB

View full text Add to dashboard Cite

Aim:To determine the perceived public concerns on the introduction of maize related agrobiotechnology including genetically modified (GM) maize in Kenya specifically with regard to biosafety, public health and religious ethics. Study Design: Household survey. Place and Duration of Study: A small scale maize growing area in Githunguri Ward (Kiambu County), a large maize growing area in Moiben Ward (Uasin Gishu County) and a maize consuming area in Umoja 1 urban residential area in the City of Nairobi, from September to October 2015. Results: Most of the respondents were concerned about:-a) the likely contamination of conventional crops through cross pollination b) the likely harmful effects of biotechnology on valuable insects, c) the fear of unclear health implications including human sickness and death, and d) the inevitable interference with God's creation of ordinary crops thus undermining God. Conclusion: There is significant public fear and concern on the introduction of GM crops in Kenya hence the need for increased public education and awareness. Mbugua-Gitonga et al.; JABB, 9(3): 1-13, 2016; Article no.JABB.28794 2 Original Research Article

show abstract

Organochlorine pesticide residues in farmed fish in Machakos and Kiambu counties, Kenya

Cited by 17 publications

References 13 publications

Validation method of organochlorine pesticides residues in water using gas chromatography–quadruple mass

Validation method of organochlorine pesticides residues in water using gas chromatography–quadruple mass

Organochlorine Contaminants in Nile Tilapia, Oreochromis niloticus (Linnaeus 1758) in Densely Populated Areas of South-Western Kenya

Biotechnology and Food Security in Kenya - An Assessment of Public Concerns on Biosafety, Public Health and Religious Ethics

Contact Info

Product

Resources

About