0 a chemical element that is very poisonous, often used to kill rats --
1 a very poisonous substance, used to kill rats (= animals like mice, but larger) and harmful insects --
The weak link between copper and both arsenic and chromium suggests that copper is also present in other sources of waste.
This is of particular interest since arsenic is known to affect signal transduction pathways at nontoxic levels.
Oxidation of pyrites releases strong sulphuric acid resulting in the dissolution of arsenic-bearing minerals.
The executive orders created national monuments, for example, while the regulations ranged from workplace rules to limits on arsenic in drinking water.
When freedoms are entered in linear form, an increase in democratic freedoms reduces arsenic concentrations.
When entered as dummies, arsenic levels increase slightly and then decrease with democratic freedoms.
Further correlations existed between heavy metals in the ash for: arsenic and chromium; and arsenic and manganese.
The highest readings of arsenic, chromium, and copper all occurred when wood was present.
