Citation: Hkj. Powell et al., FREE ALUMINUM AND RELATED PARAMETERS IN SOIL SOLUTION FROM A SOUTH ISLAND (NEW-ZEALAND) HIGH COUNTRY SITE UNDER CONTRASTING S AND P FERTILIZATION, Australian Journal of Soil Research, 35(1), 1997, pp. 175-181
Citation: Dj. Hawke et al., DETERMINATION OF THE ALUMINUM COMPLEXING CAPACITY OF FULVIC-ACIDS ANDNATURAL-WATERS, WITH EXAMPLES FROM 5 NEW-ZEALAND RIVERS, Marine and freshwater research, 47(1), 1996, pp. 11-17
Citation: Dj. Hawke et al., EQUILIBRIUM MODELING OF INTERFERENCES IN THE VISIBLE SPECTROPHOTOMETRIC DETERMINATION OF ALUMINUM(III) - COMPARISON OF THE CHROMOPHORES CHROME AZUROL-S, ERIOCHROME CYANINE-R AND PYROCATECHOL-VIOLET, AND STABILITY-CONSTANTS FOR ERIOCHROME CYANINE-R ALUMINUM COMPLEXES, Analytica chimica acta, 319(3), 1996, pp. 305-314
Citation: Dj. Hawke et Hkj. Powell, SOIL SOLUTION CHEMISTRY AT A WESTLAND-PETREL BREEDING COLONY, NEW-ZEALAND - PALEOECOLOGICAL IMPLICATIONS, Australian Journal of Soil Research, 33(6), 1995, pp. 915-924
Citation: Hkj. Powell et Dj. Hawke, FREE ALUMINUM AND ALUMINUM COMPLEXATION CAPACITY OF NATURAL ORGANIC-MATTER IN ACIDIC FOREST SOIL SOLUTIONS FROM CANTERBURY, NEW-ZEALAND, Australian Journal of Soil Research, 33(4), 1995, pp. 611-620
Citation: Dj. Hawke et Hkj. Powell, FLOW-INJECTION ANALYSIS APPLIED TO THE KINETIC DETERMINATION OF REACTIVE (TOXIC) ALUMINUM - COMPARISON OF CHROMOPHORES, Analytica chimica acta, 299(2), 1994, pp. 257-268
Citation: Dj. Hawke et Ka. Hunter, DISSOLVED TRACE-METAL SPECIATION IN THE MANUHERIKIA RIVER, CENTRAL OTAGO, NEW-ZEALAND, Australian Journal of Marine and Freshwater Research, 43(6), 1992, pp. 1381-1391