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Reducing mercury pollution from Kjeldahl determination of total nitrogen

, : Reducing mercury pollution from Kjeldahl determination of total nitrogen. Journal of Environmental Quality 2(3): 395-396

Hg as a digestion catalyst in Kjeldahl determination of N in soil and plant tissue is a potential pollutant if washed into laboratory drains. In an effort to reduce this pollution hazard, a study was conducted to develop a means of freeing Kjeldahl waste solutions of Hg.


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Richards, C.M.; Carlson, B.M.; Rogers, S.L., 1975: Regeneration of digits and forelimbs in the Kenyan reed frog Hyperolius viridiflavus ferniquei. Newly metamorphosed individuals of the Kenyan reed frog, Hyperolius viridiflavus ferniquei, are able completely to regenerate amputated digits, including the morphologically complex digital pad. The sequence of morphological events is very similar...

Ribeiro, W.Lyeverton.Correia.; Macedo, I.Tersia.Freitas.; dos Santos, J.Maria.Leite.; de Oliveira, E.Falcão.; Camurça-Vasconcelos, A.Lourdes.Fernandes.; de Paula, H.Cesar.Beserra.; Bevilaqua, C.Maria.Leal., 2013: Activity of chitosan-encapsulated Eucalyptus staigeriana essential oil on Haemonchus contortus. Phytotherapy has been described as an alternative method for the control of gastrointestinal nematodes in small ruminants. Goal of the encapsulation of essential oils in biopolymer matrices is to optimize the biological effects of these oils. The...

Mishra, S.Kumar.; Suryaprakash, N., 2017: Pure shift edited ultra high resolution NMR spectrum with complete eradication of axial peaks and unwanted couplings. Poor chemical shift dispersion and pairwise interaction among the entire coupled network of spins results in complex one dimensional <sup>1</sup>H NMR spectra, severely hampering the analysis and the accurate determination of <sup&g...

Anonymous, 2013: A 21-year-old woman with mediastinal mass and cardiac arrest. Mediastinal mass syndrome (MMS) is a devastating respiratory and haemodynamic condition that might be encountered postintubation if special precautions are not carefully undertaken. We describe a case of MMS in a 21-year-old woman with a fatal out...

Raghothamachar, B.; Dhanaraj, G.; Bai, J.; Dudley, M., 2006: Defect analysis in crystals using X-ray topography. A brief review of X-ray topography--a nondestructive method for direct observation and characterization of defects in single crystals--is presented here. The origin and development of this characterization method and the different techniques deriv...

Greig, E.I.; Pruett-Jones, S., 2010: Danger may enhance communication predator calls alert females to male displays. Sexual displays are typically given in the absence of predators. One possible exception to this is seen in male splendid fairy-wrens (Malurus splendens), which sing display-like vocalizations (Type II song) in response to predator calls. In this s...