Items where NERC Author is "Humphrey, Olivier"

2024

Tye, Andrew M.; Jarvie, Helen P. ORCID: https://orcid.org/0000-0002-4984-1607; Spears, Bryan M. ORCID: https://orcid.org/0000-0002-0876-0405; Dise, Nancy B. ORCID: https://orcid.org/0000-0003-0463-6885; Williamson, Jennifer L. ORCID: https://orcid.org/0000-0001-8216-5885; Lapworth, Dan J. ORCID: https://orcid.org/0000-0001-7838-7960; Monteith, Don ORCID: https://orcid.org/0000-0003-3219-1772; Sanders, Richard ORCID: https://orcid.org/0000-0002-6884-7131; Mayor, Daniel J. ORCID: https://orcid.org/0000-0002-1295-0041; Bowes, Michael J. ORCID: https://orcid.org/0000-0002-0673-1934; Bowes, Michael; Burden, Annette ORCID: https://orcid.org/0000-0002-7694-1638; Callaghan, Nathan ORCID: https://orcid.org/0000-0003-0273-6161; Farr, Gareth; Felgate, Stacey ORCID: https://orcid.org/0000-0002-9955-4948; Gibb, Stuart; Gilbert, Pete; Hargreaves, Geoff ORCID: https://orcid.org/0000-0002-4361-6134; Humphrey, Olivier S.; Keenan, Patrick; Kitidis, Vassilis; Jürgens, Monika D. ORCID: https://orcid.org/0000-0002-6526-589X; Martin, Adrian ORCID: https://orcid.org/0000-0002-1202-8612; Pearson, Monty; Nightingale, Philip D.; Gloria Pereira, M. ORCID: https://orcid.org/0000-0003-3740-0019; Olszewska, Justyna ORCID: https://orcid.org/0000-0002-4910-2206; Pickard, Amy ORCID: https://orcid.org/0000-0003-1069-3720; Rees, Andrew P.; Stinchcombe, Mark; Worrall, Fred; Evans, Chris D. ORCID: https://orcid.org/0000-0002-7052-354X. 2024 Riverine concentrations and export of dissolved silicon, and potential controls on nutrient stoichiometry, across the land–ocean continuum in Great Britain. Journal of Hydrology, 640, 131738. 10.1016/j.jhydrol.2024.131738

Dowell, Sophia; Humphrey, Olivier; Isaboke, Job; Barlow, Thomas; Blake, William; Osano, Odipo; Watts, Michael. 2024 Plutonium isotopes can be used to model soil erosion in Kenya. Environmental Geochemistry and Health, 46 (9), 338. 10.1007/s10653-024-02084-2

Argyraki, A.; Watts, M.J.; Abdou, M.; Ahmad, W.; Ajayi, F.F.; An, T.; Barbieri, M.; Biswas, J.K.; Gaberšek, M.; Gibson, G.; Hashmi, M.Z.; Humphrey, O.S.; Hursthouse, A.S.; Kaninga, B.; Laniyan, T.A.; Monteiro, C.E.; Morton-Bermea, O.; Olajide-Kayode, J.; Olatunji, A.S.; Onyangore, F.; Osano, O.; Potgieter-Vermaak, S.; Prater, C.; Purchase, D.; Torrance, K.. 2024 Charting achievements: a two-year retrospective of the society for environmental geochemistry and health (SEGH) and the evolving strategies. Environmental Geochemistry and Health, 46 (7), 242. 10.1007/s10653-024-02015-1

Ondayo, Maureene Auma; Watts, Michael J.; Humphrey, Olivier S.; Osano, Odipo. 2024 Public health assessment of Kenyan ASGM communities using multi-element biomonitoring, dietary and environmental evaluation. Ecotoxicology and Environmental Safety, 277, 116323. 10.1016/j.ecoenv.2024.116323

Aura, C.M.; Humphrey, O.S.; Marriott, A.L.; Watts, M.J.; Ongore, C. O.; Mwamburi, J.M.; Osano, O.; Coffey, T.J.. 2024 Assessing the spatial distribution of elemental concentrations in surface sediments of Lake Victoria, Kenya: implications for ecological health and management. Environmental Geochemistry and Health, 46 (4), 137. 10.1007/s10653-024-01930-7

Dowell, Sophia M.; Humphrey, Olivier S.; Gowing, Charles J.B.; Barlow, Thomas S.; Chenery, Simon R.; Isaboke, Job; Blake, William H.; Osano, Odipo; Watts, Michael J.. 2024 Suitability of 210Pbex, 137Cs and 239+240Pu as soil erosion tracers in western Kenya. Journal of Environmental Radioactivity, 271, 107327. 10.1016/j.jenvrad.2023.107327

Humphrey, O.S.; Aura, C.; Ongore, C.; Isaboke, J.; Osano, O.; Watts, M.J.. 2024 Dynamics of land to lake transfers in the Winam Gulf : stakeholder engagement meeting, June 2024. Nottingham, UK, British Geological Survey, 43pp. (OR/24/035) (Unpublished)

2023

Humphrey, Olivier S.; Cave, Mark; Hamilton, Elliott M.; Osano, Odipo; Menya, Diana; Watts, Michael J.. 2023 Predictive geochemical mapping using machine learning in western Kenya. Geoderma Regional, 35, e00731. 10.1016/j.geodrs.2023.e00731

Dowell, Sophia M.; Humphrey, Olivier S.; Blake, William H.; Osano, Odipo; Chenery, Simon; Watts, Michael J.. 2023 Ultra-trace analysis of fallout plutonium isotopes in soil: emerging trends and future perspectives. Chemistry Africa, 6. 2429-2444. 10.1007/s42250-023-00659-7

Dowell, Sophia M.; Barlow, Thomas S.; Chenery, Simon R.; Humphrey, Olivier S.; Isaboke, Job; Blake, William H.; Osano, Odipo; Watts, Michael J.. 2023 Optimisation of plutonium separations using TEVA cartridges and ICP-MS/MS analysis for applicability to large-scale studies in tropical soils. Analytical Methods, 15 (34). 4226-4235. 10.1039/D3AY01030A

Marriott, A.L.; Osano, O.F.; Coffey, T. .; Humphrey, O.S.; Ongore, C.O.; Watts, M.J.; Aura, C.M.. 2023 Considerations for environmental biogeochemistry and food security for aquaculture around Lake Victoria, Kenya. Environmental Geochemistry and Health, 45. 6137-6162. 10.1007/s10653-023-01585-w

Humphrey, Olivier; Osano, Odipo; Njoroge, Ruth; Watts, Michael. 2023 Assessing geospatial controls on the soil-crop-health nexus in western Kenya. [Lecture] In: SEGH 2023. 38th International Conference on Geochemisrty and Health, University of Athens, Greece, 02-06 Jul 2023. (Unpublished)

Job, Isaboke; Osano, Odipo; Humphrey, Olivier; Dowell, Sophia; Watts, Michael. 2023 Changing the nutritional status of forage grass due to changing soil chemistry resulting from different land-use management in the Oroba valley, Kenya. [Poster] In: SEGH 2023. 38th International Conference on Geochemistry and Health, University of Athens, Greece, 02-06 Jul 2023. (Unpublished)

Watts, Michael; Humphrey, Olivier; Hamilton, Elliott; Marriott, Andy; Dowell, Sophia; Blake, William; Isaboke, Job; Osano, Odipo; Mwamburi, Job; Aura, Christopher M.. 2023 Novel geochemistry to determine the dynamics of land to lake transfers in the Lake Victoria basin to inform coordinated land-lake management strategies. [Poster] In: SEGH 2023. 38th International Conference on Geoghemistry and Health, University of Athens, Greece, 02-06 Jul 2023. (Unpublished)

Dowell, Sophia; Humphrey, Olivier; Barlow, Thomas; Chenery, Simon; Blake, William; Osano, Odipo; Job, Isaboke; Watts, Michael. 2023 Plutonium: A novel soil erosion tracer in Eastern Africa. [Lecture] In: SEGH 2023 38th International Conference on Geochemistry and Health, University of Athens, Greece, 02-06 Jul 2023. (Unpublished)

Onyangore, Faith; Mibei, Erick; Humphrey, Olivier; Hamilton, Elliott; Watts, Michael. 2023 Urinary hydration correction for trace elements influencing child and maternal health status in western Kenya. [Poster] In: SEGH 2023. 38th International Conference on Geochemistry and Health, University of Athens, Greece, 02-06 Jul 2023. (Unpublished)

Watts, M.J.; Argyraki, A.; Barbieri, M.; Brown, A.; Button, M.; Finkelman, R.; Gibson, G.; Humphrey, O.; Huo, X.; Hursthouse, A. S.; Kaninga, B.; Marinho Reis, P.; Middleton, D. R. S.; Morton-Bermea, O.; Nazarpour, A.; Olatunji, A. S.; Osano, O.; Potgieter-Vermaak, S.; Prater, C.; Torrance, K.; Wong, M. H.; Zhang, C.; Zia, M.. 2023 Editorial: the society for environmental geochemistry and health (SEGH): 50 years and beyond. Environmental Geochemistry and Health, 45. 1165-1171. 10.1007/s10653-021-01192-7

Humphrey, O.S.; Marriott, A.L.; Dowell, S.M.; King, D.; Watts, M.J.. 2023 Dynamics of environmental geochemistry and health in a lake-wide basin : stakeholder engagement meeting. Nottingham, UK, British Geological Survey, 20pp. (OR/23/010) (Unpublished)

Humphrey, O.S.; Aura, C.; Ongore, C.; Osano, O.; Watts, M.J.. 2023 Workshop on dynamics of land to lake transfers in the Winam Gulf. Nottingham, UK, British Geological Survey, 25pp. (OR/23/056) (Unpublished)

2022

Watts, Michael J.; Humphrey, Olivier; Menya, Diana; Osano, Odipo. 2022 Geochemistry and health data to inform public health outcomes in western Kenya. [Lecture] In: 37th International SEGH conference, Eldoret, Kenya, 10-14 Oct 2022. SEGH, 41.

Dowell, Sophia M.; Humphrey, Olivier S.; Blake, William H.; Osano, Odipo; Isaboke, Job; Marriott, Andrew L.; Watts, Michael J.. 2022 Plutonium as a soil erosion tracer in east Africa. [Lecture] In: 37th International SEGH conference, Eldoret, Kenya, 10-14 Oct 2022. SEGH. (Unpublished)

Isaboke, Job; Humphrey, Olivier S.; Dowell, Sophia M.; Osano, Odipo; Watts, Michael J.. 2022 Spatial distribution and loss of micronutrients in soils from two different land use management. [Lecture] In: 37th International SEGH conference, Eldoret, Kenya, 10-14 Oct 2022. Society for Geochemistry and Health, 35.

Gul, Ammara; Muhammad, Sayyar; Nawaz, Saleem; Munir, Sidra; Rehman, Khushnood Ur; Ahmad, Saeed; Humphrey, Olivier S.. 2022 Ficus religiosa bark an efficient adsorbent for Alizarin Red S dye: Equilibrium and kinetic analysis. Journal of the Iranian Chemical Society, 19 (5). 1737-1746. 10.1007/s13738-021-02413-7

Humphrey, Olivier S.; Osano, Odipo; Aura, Christopher M.; Marriott, Andrew L.; Dowell, Sophia M.; Blake, William H.; Watts, Michael J.. 2022 Evaluating spatio-temporal soil erosion dynamics in the Winam Gulf catchment, Kenya for enhanced decision making in the land-lake interface. Science of The Total Environment, 815, 151975. 10.1016/j.scitotenv.2021.151975

Humphrey, O.S.; Osano, O.; Menya, D.; Watts, M.J.. 2022 Geochemistry and health Kenyan stakeholder workshops 2022. Nottingham, UK, British Geological Survey, 22pp. (OR/22/054) (Unpublished)

2021

Watts, Michael J.; Menya, Diana; Humphrey, Olivier S.; Middleton, DanielR.S.; Hamilton, Elliott; Marriott, Andrew; McCormack, Valerie; Osano, Odipo. 2021 Human urinary biomonitoring in Western Kenya for micronutrients and potentially harmful elements. International Journal of Hygiene and Environmental Health, 238, 113854. 10.1016/j.ijheh.2021.113854

Rahman, Zia ur; Ahmad, Saeed; Fidel, Rivka; Khalid, Salma; Ahmad, Iqbal; Humphrey, Olivier S.; Khan, Hizbullah; Khan, Bushra. 2021 Faecal and nitrate contamination in the groundwater of Mardan district, Pakistan. Environmental Geochemistry and Health, 43. 3615-3624. 10.1007/s10653-021-00848-8

Humphrey, O.S.; Middleton, D. R. S.; Ahmad, S.; Cocerva, T.; Dowell, S.M.; Garza-Galndo, R.; Hamilton, E.M.; Kafwamfwa, N.; Kaninga, B.; Kourgia, P.; Ligowe, I. S.; MacLeod, H. A.; Mafulul, S. G.; Marriott, A.L.; McLellan, I. S.; Meso, D. N.; Munthali, K.; Niepsch, D.; Rodgers, K. J.; Song, N.; Tait, A. J.; Woods, C.. 2021 The Society for Environmental Geochemistry and Health (SEGH): building for the future of early career researchers. Environmental Geochemistry and Health, 43. 2455-2458. 10.1007/s10653-020-00620-4

Hamilton, Elliott M.; Young, Scott D.; Bailey, Elizabeth H.; Humphrey, Olivier S.; Watts, Michael J.. 2021 Online Microdialysis-High-Performance Liquid Chromatography-Inductively Coupled Plasma Mass Spectrometry (MD-HPLC-ICP-MS) as a Novel Tool for Sampling Hexavalent Chromium in Soil Solution. Environmental Science & Technology, 55 (4). 2422-2429. 10.1021/acs.est.0c08140

2020

Hamilton, Elliott .; Young, Scott D.; Bailey, Elizabeth H.; Humphrey, Olivier S.; Watts, Michael J.. 2020 Assessment of chromium species dynamics in root solutions using isotope tracers. Journal of Trace Elements in Medicine and Biology, 61, 126514. 10.1016/j.jtemb.2020.126514

Watts, Michael J.; Middleton, Daniel R.S.; Marriott, Andrew; Humphrey, Olivier S.; Hamilton, Elliott; McCormack, Valerie; Menya, Diana; Farebrother, Jessica; Osano, Odipo. 2020 Iodine status in western Kenya: a community-based cross-sectional survey of urinary and drinking water iodine concentrations. Environmental Geochemistry and Health, 42. 1141-1151. 10.1007/s10653-019-00352-0

Humphrey, Olivier S.; Young, Scott D.; Crout, Neil M.J.; Bailey, Elizabeth H.; Ander, E. Louise; Watts, Michael J.. 2020 Short-term iodine dynamics in soil solution. Environmental Science & Technology, 54 (3). 1443-1450. 10.1021/acs.est.9b02296

Watts, Michael J.; An, Taicheng; Argyraki, Ariadne; Arhin, Emmanuel; Brown, Anthea; Button, Mark; Entwistle, Jane A.; Finkelman, Robert; Gibson, Gillian; Humphrey, Olivier S.; Huo, Xia; Hursthouse, Andrew S.; Marinho-Reis, A. Paula; Maseka, Kakoma; Middleton, Daniel R.S.; Morton-Bermea, Ofelia; Nazarpour, Ahad; Olatunji, Akinade Shadrach; Osano, Odipo; Potgieter-Vermaak, Sanja; Saini, Sherestha; Stewart, Alex; Tarek, Moataz; Torrance, Keith; Wong, Ming Hung; Yamaguchi, Kosei E.; Zhang, Chaosheng; Zia, Munir. 2020 The Society for Environmental Geochemistry and Health (SEGH): building for the future. Environmental Geochemistry and Health, 42. 343-347. 10.1007/s10653-019-00381-9

2019

Watts, Michael J.; Middleton, Daniel R.S.; Marriott, Andrew L.; Humphrey, Olivier S.; Hamilton, Elliott M.; Gardner, Amanda; Smith, Martin; McCormack, Valerie A.; Menya, Diana; Munishi, Michael O.; Mmbaga, Blandina T.; Osano, Odipo. 2019 Source apportionment of micronutrients in the diets of Kilimanjaro,Tanzania and Counties of Western Kenya. Scientific Reports, 9 (1), 14447. 10.1038/s41598-019-51075-2

Humphrey, O.S.; Young, S.D.; Bailey, E.H.; Crout, N.M.J.; Ander, E.L.; Hamilton, E.M.; Watts, M.J.. 2019 Iodine uptake, storage and translocation mechanisms in spinach (Spinacia oleracea L.). Environmental Geochemistry and Health, 41 (5). 2145-2156. 10.1007/s10653-019-00272-z

2018

Humphrey, O.S.; Young, S.D.; Bailey, E.H.; Crout, N.M.J.; Ander, E.L.; Watts, M.J.. 2018 Iodine soil dynamics and methods of measurement: a review. Environmental Science: Processes & Impacts, 20 (2). 288-310. 10.1039/C7EM00491E