Sentence examples for the toxic limit from inspiring English sources

Since industrial effluents like tannery wastewater containing sulfide and sulfate are toxic to aquatic environment, it is essential to reduce them and bring the discharge levels of these species to below the toxic limit.

The tumour blood flow inhibitor 5,6-dimethylxanthenone-4-acetic acid (DMXAA) causes dramatic haemorrhagic necrosis in murine tumours, but activity is seen only at doses close to the toxic limit.

In terms of the pattern of cytotoxity, the extracts of C. citratus, A. paniculata, C. limon and M. charantia showed steep rises of cytotoxicity and reached the toxic limits over a narrow concentration range.

However, under the culture conditions described herein, their concentrations never reached the toxic limits (20 mM for lactate and 3 mM for ammonia) described for other cell lines [ 27- 30].

Toxic limit of Zn in majority of the plant species is 500 mg/Kg [ 24].

It is eventually excreted in the urine, but supportive therapy for the CNS depression and metabolic acidosis will be required until the ethylene glycol concentrations fall below toxic limits.

The concentrations of these metals in different parts of the plant fall in the average range of plants and were found within toxic limits.

Additionally, the total dose of local anesthetic may approach toxic limits when deep and superficial blocks are combined.

Moreover, some of the chemicals used (mercaptoethanol, methyl viologen) are highly toxic, limiting their use in standard microscope rooms.

The physiological defences of attacked plants have both direct and indirect effects on pest dynamics, because of secondary secretions that are either directly toxic, limiting further attacks, or attract natural enemies of the pests, increasing the rates of parasitism and predation of the phytophagous pests (Despres et al. 2007).

But many of the drugs that have proven effective in rodent studies are toxic, limiting their therapeutic potential in people.