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Pesticide and Nutrient Loads of Lake Bosomtwe in the Ashanti Region of Ghana

Journal of Water Resource and Protection 2021年第10期13卷 794-806页

作者： Collins kuffour David Kofi Essumang Hugh Komla Akotoye richard amankwah kuffour Janice Dwomoh Abraham Department of Environmental Health and Sanitation Education Akenten Appiah-Menka University of Skills Training and Entrepreneurial Development Mampong Ashanti Region Ghana School of Physical Sciences University of Cape Coast Cape Coast Central Region Ghana Department of Environmental Science University of Cape Coast Cape Coast Central Region Ghana Department of Biological Sciences Education Akenten Appiah-Menka University of Skills Training and Entrepreneurial Development Mampong Ashanti Region Ghana

Pollution of Lake Bosomtwe is a major concern in Ghana due to its derived socio-economic benefits such as employment, ecotourism and major protein source to the people in the basin. Besides these benefits, the lake water is used for domestic purposes and has since served as the drinking water source to the people. However, the use of agrochemicals within the basin has intensified within the last decade. The problems associated with fertilizer and pesticide use in the Bosomtwe basin seem to carry with it a higher price, which, if not identified and checked, will overshadow the desired benefits of the lake. This study assesses pesticide and nutrient loads of Lake Bosomtwe in the Ashanti Region of Ghana. Fifty-four (54) lake water samples were collected from September 2016 to February 2017. Pesticide samples were extracted using the solid phase extraction method and GCMS to identify the pesticides present in the water samples and determine their loads. The data obtained were analyzed using Statistical Product Service Solutions (SPSS version 20) for descriptive statistics. The concentration of dichlorvos was a bit lower when compared with the WHO/USEPA guidelines of 5 ppb for surface water. Diazinon had a mean concentration of 0.28 ± 0.03 ppb which was higher than the WHO 0.05 ppb and USEPA 0.04 ppb for surface water bodies. The detection of diazinon confirms the findings from the field survey, which revealed that diazinon, is an active ingredient of a pesticide with a trade name “Akate suro”, which was extensively used by cocoa farmers along the banks of the lake. The mean concentration recorded for nitrate and phosphate were 0.15 ± 0.05 mg/L and 0.40 ± 0.12 mg/L respectively. The pesticides application inventory and implications of pesticide and nutrient loads on the lake are discussed in the paper.

关键词： Organochlorine Organophosphorus Pesticide Fertilizer Bosomtwe

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Contribution of the Advanced Research Laboratories at the Noguchi Memorial Institute for Medical Research (NMIMR) to SARS-CoV-2 Testing in Ghana

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Health 2022年第1期14卷 125-136页

作者： Darius N. K. Quansah Ivy A. Asante Evelyn Y. Bonney Evangeline Obodai Mildred A. Adusei-Poku James Aboagye Susan Adu-amankwah Samuel Adjei richard Akuffo Helena Lamptey George B. Kyei John K. Odoom William K. Ampofo Joseph H. K. Bonney Department of Virology Noguchi Memorial Institute for Medical Research University of Ghana Legon Accra Ghana West African Centre for Cell Biology of Infectious Pathogens College of Basic and Applied Sciences University of Ghana Legon Accra Ghana Department of Medical Microbiology University of Ghana Medical School Accra Ghana Medical and Scientific Research Directorate University of Ghana Medical Centre Legon Accra Ghana Department of Epidemiology Noguchi Memorial Institute for Medical Research University of Ghana Legon Accra Ghana Department of Animal Experimentation Noguchi Memorial Institute for Medical Research University of Ghana Legon Accra Ghana Department of Immunology Noguchi Memorial Institute for Medical Research University of Ghana Legon Accra Ghana

In March 2020, the first cases of SARS-CoV-2 were reported in Accra, Ghana. These initial cases were diagnosed at the Advanced Research Laboratories (ARL) of the Noguchi Memorial Institute for Medical Research (NMIMR), University of Ghana. The ARL which hitherto was used for routine clinical research in viral, bacteria and immunological studies has since been the facility of choice for testing for all suspected cases of COVID-19 submitted from across Ghana and beyond. The success of testing at the ARL hinged on the availability of several laboratory spaces furnished with state-of-the-art diagnostic equipment and working aids. During the “peak season” where overwhelming numbers of clinical specimens were received, the ARL processed and got results for close to four thousand samples daily. After general disinfection and re-bagging into smaller numbers, at the entrance of the ARL, the samples are taken to a central receiving laboratory, where they are received and entered in a database with accompanying case investigation forms. All samples that are successfully sorted and matched are sent to general laboratories for nucleic acid extraction and then referred to the Instrumentation laboratory for real time reverse-transcription polymerase chain reaction (RT-PCR). When the RT-PCRs were completed, results were analysed and transmitted via email and/or local network to the data reporting office. The data managers then reported results to the investigators and the Ghana Health Service (GHS). Additionally, the ARL provided a next-generation Genome Sequencing platform in partnership with the West African Centre for Cell Biology of Infectious Pathogens at the University of Ghana, which was essential in reporting the genome data of the circulating variants of SARS-CoV-2 in Ghana. Conclusively, it is worth noting, that the NMIMR fulfilled its mandate of supporting the country with specialized diagnostics through the judicious use of the ARL for SARS-CoV-2 testing, from sample re

关键词： Advanced Research Laboratories Polymerase Chain Reaction Severe Acute Respiratory Syndrome—Corona Virus 2 Corona Virus Disease 2019

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