| Natural occurrence of hexavalent chromium in the Aromas Red Sands Aquifer, California AR Gonzalez, K Ndung'u, AR Flegal Environmental science & technology 39 (15), 5505-5511, 2005 | 188 | 2005 |
| Organic complexation and total dissolved trace metal analysis in estuarine waters: comparison of solvent-extraction graphite furnace atomic absorption spectrometric and … K Ndung’u, RP Franks, KW Bruland, AR Flegal Analytica Chimica Acta 481 (1), 127-138, 2003 | 140 | 2003 |
| Determination of lead in vinegar by ICP-MS and GFAAS: evaluation of different sample preparation procedures K Ndung’u, S Hibdon, AR Flegal Talanta 64 (1), 258-263, 2004 | 121 | 2004 |
| On-line determination of silver in natural waters by inductively-coupled plasma mass spectrometry: influence of organic matter K Ndung'u, MA Ranville, RP Franks, AR Flegal Marine chemistry 98 (2-4), 109-120, 2006 | 113 | 2006 |
| ASPIRE: the Amundsen Sea Polynya international research expedition PL Yager, RM Sherrell, SE Stammerjohn, AC Alderkamp, O Schofield, ... Oceanography 25 (3), 40-53, 2012 | 108 | 2012 |
| Chromium speciation in natural waters using serially connected supported liquid membranes NK Djane, K Ndung’u, C Johnsson, H Sartz, T Tornstrom, L Mathiasson Talanta 48 (5), 1121-1132, 1999 | 101 | 1999 |
| Supported liquid membrane enrichment using an organophosphorus extractant for analytical trace metal determinations in river waters NK Djane, K Ndung’u, F Malcus, G Johansson, L Mathiasson Fresenius' journal of analytical chemistry 358, 822-827, 1997 | 89 | 1997 |
| Trace enrichment of metals using a supported liquid membrane technique M Papantoni, NK Djane, K Ndung'u, JÅ Jönsson, L Mathiasson Analyst 120 (5), 1471-1477, 1995 | 88 | 1995 |
| Ultrasonic extraction of hexavalent chromium in solid samples followed by automated analysis using a combination of supported liquid membrane extraction and UV detection in a … K Ndung’u, NK Djane, F Malcus, L Mathiasson Analyst 124 (9), 1367-1372, 1999 | 74 | 1999 |
| Supported liquid membrane enrichment combined with atomic absorption spectrometry for the determination of lead in urine NK Djane, K Ndung’u, G Johansson, IA Bergdahl, A Schütz, L Mathiasson Analyst 122 (10), 1073-1077, 1997 | 62 | 1997 |
| Silver in western equatorial and South Atlantic Ocean Ndung'u, K, Thomas. MA & Flegal, AR Deep Sea Research Part II: Topical Studies in Oceanography 48 (13), 2933-2945, 2001 | 56 | 2001 |
| Silver in the western equatorial and South Atlantic Ocean K Ndung’u, MA Thomas, AR Flegal Deep Sea Research Part II: Topical Studies in Oceanography 48 (13), 2933-2945, 2001 | 56 | 2001 |
| Microporous membrane liquid–liquid extraction technique combined with gas chromatography mass spectrometry for the determination of organotin compounds K Ndungu, L Mathiasson Analytica chimica acta 404 (2), 319-328, 2000 | 53 | 2000 |
| Determination of trace metal ions by ion-pair chromatography after enrichment using supported liquid membrane K Ndungù, NK Djane, L Mathiasson Journal of Chromatography A 826 (1), 103-108, 1998 | 51 | 1998 |
| Pharmaceuticals and their metabolites in the marine environment: sources, analytical methods and occurrence LM Madikizela, S Ncube, H Tutu, H Richards, B Newman, K Ndungu, ... Trends in environmental analytical chemistry 28, e00104, 2020 | 47 | 2020 |
| Ecotoxicological effects of transformed silver and titanium dioxide nanoparticles in the effluent from a lab-scale wastewater treatment system A Georgantzopoulou, P Almeida Carvalho, C Vogelsang, M Tilahun, ... Environmental science & technology 52 (16), 9431-9441, 2018 | 45 | 2018 |
| Comparison of copper speciation in estuarine water measured using analytical voltammetry and supported liquid membrane techniques K Ndungu, MP Hurst, KW Bruland Environmental science & technology 39 (9), 3166-3175, 2005 | 40 | 2005 |
| Supported liquid membrane coupled on-line to potentiometric stripping analysis at a mercury-coated reticulated vitreous carbon electrode for trace metal determinations in urine NK Djane, K Ndung’u, G Johansson, L Mathiasson, S Armalis Analyst 123 (2), 393-396, 1998 | 40 | 1998 |
| Model predictions of copper speciation in coastal water compared to measurements by analytical voltammetry K Ndungu Environmental science & technology 46 (14), 7644-7652, 2012 | 39 | 2012 |
| Chromium oxidation by manganese (hydr) oxides in a California aquifer K Ndung’u, S Friedrich, AR Gonzalez, AR Flegal Applied Geochemistry 25 (3), 377-381, 2010 | 36 | 2010 |
