Arsenic is a trace element that lies just below phosphorus—which is essential for all living organisms—in the periodic table. This close chemical relationship means that cells are not always ...

Arsenic has two chemical forms, inorganic and organic (the latter of which can be less toxic), and is naturally part of the minerals in the earth's crust. (Note, here organic is a chemistry term ...

Dr. Kn_pe, at Oberzeiring, sent to Professor Schaefer in Graz, who was intrusted w_th the chemical examinations, the urine of an individual who consumed arsenic for thirty years. He felt in the ...