R. A. Ngwenyama

Quality control in the neutron activation analysis of biological markers for selenium in epidemiological investigations

J. D. Robertson, J. S. Morris, J. Brockman, 2008 .

Determinants of selenium in the toenail biomonitor

J. S. Morris, V. Spate, R. A. Ngwenyama, 2006 .

Fast and reliable method for As speciation in urine samples containing low levels of As by LC-ICP-MS: Focus on epidemiological studies.

J. McElroy, J. Brockman, R. A. Ngwenyama, 2017, Talanta.

Total Fluorine Measurements in Food Packaging: How Do Current Methods Perform?

Graham F. Peaslee, John D. Brockman, Jonathan P. Benskin, 2019, Environmental Science & Technology Letters.

A case–control study of selenium in nails and prostate cancer risk in British men

T. Key, J. S. Morris, N. Allen, 2004, British Journal of Cancer.

Determination of selenium status using the nail biologic monitor in a canine model

J. S. Morris, D. J. Waters, V. Spate, 2012, Journal of Radioanalytical and Nuclear Chemistry.

The concentration and variability of selenium and mercury measured in vacuum-packed tuna fish

J. Brockman, N. Sharp, R. A. Ngwenyama, 2009 .