Arsenic is a ubiquitous element with metalloid properties. Its chemistry is complex and there are many different compounds of both inorganic and organic arsenic. In nature, it is widely distributed in a number of minerals, ...

Heptachlor is a white crystalline solid with a mild camphor odour. It is used as an insecticide. Gas chromatography with electron capture detection is the method most commonly used for heptachlor determination. Heptachlor ...