All six of the elements commonly recognised as metalloids have toxic, dietary or medicinal properties.[119] Arsenic and antimony compounds are especially toxic; boron, silicon, and possibly arsenic, are essential trace elements. Boron, silicon, arsenic and antimony have medical applications, and germanium and tellurium are thought to have potential.
Boron is used in insecticides[120] and herbicides.[121] It is an essential trace element.[122] As boric acid, it has antiseptic, antifungal, and antiviral properties.[123]
Silicon is present in silatrane, a highly toxic rodenticide.[124] Long-term inhalation of silica dust causes silicosis, a fatal disease of the lungs. Silicon is an essential trace element.[122] Silicone gel can be applied to badly burned patients to reduce scarring.[125]
Salts of germanium are potentially harmful to humans and animals if ingested on a prolonged basis.[126] There is interest in the pharmacological actions of germanium compounds but no licensed medicine as yet.[127]
All six of the elements commonly recognised as metalloids have toxic, dietary or medicinal properties.[119] Arsenic and antimony compounds are especially toxic; boron, silicon, and possibly arsenic, are essential trace elements. Boron, silicon, arsenic and antimony have medical applications, and germanium and tellurium are thought to have potential.Boron is used in insecticides[120] and herbicides.[121] It is an essential trace element.[122] As boric acid, it has antiseptic, antifungal, and antiviral properties.[123]Silicon is present in silatrane, a highly toxic rodenticide.[124] Long-term inhalation of silica dust causes silicosis, a fatal disease of the lungs. Silicon is an essential trace element.[122] Silicone gel can be applied to badly burned patients to reduce scarring.[125]Salts of germanium are potentially harmful to humans and animals if ingested on a prolonged basis.[126] There is interest in the pharmacological actions of germanium compounds but no licensed medicine as yet.[127]
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